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Quality Marine Equipment Since 1981
www.pyiinc.com
PYI INC. Established in 1981, and still under the same ownership today, PYI Inc. is a leading manufacturer and distributor of high quality marine, boat, yacht, and ship equipment. Every year PYI has seen advancements in each of its products. Whether it is a new or established product line, be assured that you will experience the product performance and customer service that you expect and deserve. At PYI, we quickly respond to our customer’s ideas and needs. We have never forgotten that our company cannot exist without our customers. Our goal is to provide quality, innovative marine equipment with an unsurpassed level of customer service and satisfaction and we will not stray from this goal. Mission Statement
1981 PYI founded by Frederic Laffitte 1984 PYI moves to a building at Shilshole Marina in Seattle 1991 Now to 7 employees, PYI outgrows it’s location, moves to a larger space and becomes the Whitlock Steering US distributor
1983 Kevin Woody joins PYI
1986 PSS Shaft Seal is developed and introduced to the marine world
1999 PYI purchases it’s current 10,000 sqft building in Lynnwood, WA. The Seaview line of electronic mounting solutions is developed and manufacturing begins 2016 With the acquisition of SnoLynn Machine, PYI finally realizes a longterm goal and builds a full in-house machine shop 2019 PYI introduces Fendertex inflatable textile fenders to the US marketplace
2002 PYI launches US
distribution for Jefa Steering and Rudder after the Whitlock brand is sold to Lewmar
2018 The Seaview line is spun off to 3 employees and moves to Spokane, WA
1
| INTRODUCTION
TABLE OF CONTENTS
PSS SHAFT SEAL Packless Sealing System .................................................. 3 PSS Type A Shaft Seal ....................................................... 4 PSS PRO Shaft Seal ........................................................... 5 PSS Type B Shaft Seal ....................................................... 6 PSS Type C Shaft Seal ....................................................... 7 PSS Rudder Seal ................................................................ 9 PSS Maintenance Kit ...................................................... 10 Accessories ..................................................................... 10 PSS Installation Examples ............................................. 12 PSS Flange & Bladder ..................................................... 13 Other Applications ......................................................... 15 SRC Shaft Retention Collar .................................................... 16 MAX-PROP Automatic Feathering Propellers ................................ 17 History ............................................................................. 17 Benefits of a Max-Prop .................................................. 19 Easy .................................................................................. 21 SailDrive ........................................................................... 22 Whisper ........................................................................... 23 Boomerang ..................................................................... 24 Catamaran ...................................................................... 25 Accessories ..................................................................... 26 R&D MARINE Drivetrain Solutions ........................................................ 27 Flexible Shaft Couplings ................................................ 29 Split Shaft Couplings ...................................................... 35 Engine Mounts ................................................................ 37 Damper Plates ................................................................ 41 LECOMBLE & SCHMITT Steering Systems ............................................................. 45 Autopilot Systems .......................................................... 47 Hydraulic Steering Systems .......................................... 51
JEFA Rudder & Steering Systems ........................................... 53 Steering Systems ............................................................ 53 Rudder Bearings ............................................................. 55 Rudders ........................................................................... 61 Sealing Systems .............................................................. 62 Autopilot Systems .......................................................... 63 KIWIGRIP Non-Skid Coating ............................................................... 65 SONIHULL Ultrasonic Antifouling System ..................................... 69 Mono ................................................................................ 71 Duo .................................................................................. 71 Sonihull8 .......................................................................... 73 Accessories ..................................................................... 75 PYI HOSE CLAMPS 316L Worm Gear Hose Clamps ..................................... 77 CLAMP JACKET Hose Clamp Tail Covers .................................................. 81 FENDERTEX ® FENDERS Inflatable Boat Fenders ................................................. 82 Sizing Chart ..................................................................... 84 Accessories ..................................................................... 86 FLOOR ANCHORS Floorboard Fasteners ..................................................... 89 PYI MACHINE SHOP Machine Shop ................................................................... 91 PYI CREW PYI Employees .................................................................. 93 TECHNICAL SUPPORT Contact PYI ........................................................................ 94
2
TABLE OF CONTENTS |
Mechanical Dripless Shaft Seal PSS SHAFT SEAL The PSS Shaft Seal is the #1 selling marine mechanical seal worldwide and is installed as standard equipment by many of the world’s most reputable boat builders and boat yards. The PSS Shaft Seal is also recognized as the premiere retrofit (aftermarket) seal on the world market. Boat builders and boat yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment and cost associated with traditional packing type glands. In addition to these benefits, the PSS Shaft Seal helps to eliminate water in the bilge (100% water tight) and wear to the propeller shaft. The PSS Shaft Seal can be easily retrofitted and is available for shafts ranging from 3/4” to 6” (20mm to 150mm).
CERTIFICATIONS
The PSS Shaft Seal is Bureau Veritas, ABS & RINA certified.
HOW IT WORKS
The Packless Sealing System (PSS) Shaft Seal is a mechanical face seal created between a rotating stainless steel rotor (N50 for Type B and Type C models) and a stationary carbon stator. The carbon stator is attached to a convoluted rubber bellow (silicone for Type B and Type C models) and the back of the bellow is attached to the shaft log (stern-tube) of the boat with hose clamps. During installation, the stainless steel rotor is used to compress the convoluted bellow. The rotor is then secured to the shaft. The compression of the bellow allows the seal faces to remain in constant contact while compensating for the fore-and-aft movement of the shaft caused by the propellers thrust pushing on the engine mounts.
The carbon stator is bored slightly larger than the shaft diameter, allowing it to “float” around the shaft and compensate for minor misalignment / vibration problems.
The stainless steel rotor is sealed to the shaft with o-rings. These o-rings rotate with the shaft and rotor and do not experience any wear during operation. This static o-ring seal enables the PSS Shaft Seal to be fit on shafts that have some wear or pitting, unlike lip seal designs which require a clean area for the lip seal to ride on.
This type of carbon face seal is less sensitive to the interruption of water flow or operation in silty water, when compared to other sealing options.
Stainless Steel Rotor
Carbon Stator
Bellow
Shaft
Stern Tube (Shaft Log)
Set Screws
Hull
O-Rings
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
3
| PSS SHAFT SEAL
PSS TYPE A The Type A Seal is our most common product, with over 200,000 units in operation globally. This seal will satisfy most applications for pleasure boats and smaller commercial boats. For Shaft Diameters ¾” - 3¾” (20mm - 95mm)
COMPONENTS STAINLESS STEEL ROTOR
The rotor is manufactured out of 316L stainless steel. It is secured on the shaft using 2 pairs of set screws positioned at 90 degrees for maximum holding power. This rotor does not need replacement or maintenance under normal operating conditions. CARBON STATOR (SINGLE INJECTED) The grade of carbon composite used in the PSS Shaft Seal has a maximum operating temperature of 500° F (+260° C) and will not melt if the seal runs dry for a short period of time unlike a lip seal or a plastic face seal. The high density of the carbon greatly increases the longevity and wear resistance. The carbon should not need to be replaced under normal operating conditions. BELLOW The bellow on the Type A seal is molded out of a Nitrile compound. Nitrile is known for its resistance to petroleum products. It provides the best combination of durability, strength and elasticity necessary in this application.
Clamp Jacket
Nitrile bellow
Carbon stator
Set screw
O-ring
Hose clamp
Hose barb*
Stainless steel rotor
* A Hose Barb is recommended for vessels exceeding 10 knots.
For maintenance schedule refer to the PSS Maintenance Kits on page 10.
TECHNICAL SPECIFICATIONS
(Overall Compressed Length) C
Temperature Limits 5°F to 225°F (-15°C to 107°C) Pressure Limits 15 PSI (1 BAR) Shaft RPM Limits 10,000 RPM Carbon Graphite Lapped to 4 HLB (0.000044" tolerance) 316 SS / Nitronic 50 Faced to 9 Ra Bellow Material Molded Nitrile - PVC
B
A
D
IMPERIAL SIZES
METRIC SIZES (mm)
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
1¼”, 1½”, 1¾”, 2”, 2¼”
6.00” - 6.125”
2.375”
30, 40, 45, 50, 60
152 - 156
61
¾”, ⅞”, 1”, 1⅛”
20, 22, 25, 28, 30
2½”
6.625”
2.375”
65
168
61
1¾”, 2”, 2¼”, 2½”
6.625” - 6.75”
2.875”
45, 50, 60, 65
168 - 172
73
1¼”, 1⅜”
32, 35
2¾”, 3”, 3¼”, 3½”
8.125” - 8.313”
2.875”
70, 80, 85, 90
206 - 211
73
2”, 2¼”, 2½”, 2¾”, 3”, 3¼”, 3½”
8.00” - 8.218”
3.75”
50, 60, 65, 70, 75, 80, 85, 90
203 - 209
96
1½”, 1⁹⁄ ¹⁶ ”, 1¾”, 2”
38, 40, 45, 50, 55
3¾”, 4”
8.405”
3.75”
95, 100
213
96
3¼”, 3½”, 3¾”, 4”
8.625”
4.20”
85, 90, 95, 100
219 - 224
107
2¼”, 2½”
60, 65
4¼”, 4½”, 4¾”, 5”
9.25”
4.20”
110, 115, 120, 125
235
107
4”, 4¼”, 4½”, 4¾”, 5”
9.125” - 9.313”
5.00”
100, 110, 115, 120, 125
231 - 237
127
2¾”, 3”
70, 75, 80
5¼”, 5½”, 5¾”, 6”
9.25” - 9.438”
5.00”
135, 140, 145, 150
235 - 240
127
3¼”, 3½”, 3⅝”, 3¾”
4½”, 4¾”, 5”, 5¼”, 5½”, 5¾”, 6”
9.675” - 9.863
6.00”
85, 90, 95
115, 120, 125, 130, 135, 140, 145, 150
245 - 250
153
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
4
PSS SHAFT SEAL |
PSS PRO
For Shaft Diameters ¾” - 3¾” (20mm - 95mm)
COMPONENTS STAINLESS STEEL ROTOR
The PSS "PRO" model is manufactured with commercial applications in mind.
The rotor is manufactured out of 316L stainless steel. It is secured on the shaft using 2 pairs of set screws positioned at 90 degrees for maximum holding power. A locking collar is placed in front of the rotor and further retains the propeller or rudder shaft in case of catastrophic failure of the coupling or if the shaft comes free from the coupling. This rotor does not need replacement or maintenance under normal operating conditions. CARBON STATOR (SINGLE INJECTED) The grade of carbon composite used in the PSS PRO Shaft Seal has a maximum operating temperature of 500° F (+260° C) and will not melt if the seal runs dry for a short period of time unlike a lip seal or a plastic face seal. The high density of the carbon greatly increases the longevity and wear resistance. The carbon should not need to be replaced under normal operating conditions. BELLOW The PRO bellow is constructed out of high temp silicone laminated with either 4 or 5 plies of polyester fabric (aramid in larger sizes) and covered with a layer of fluorosilicone.
Hose Clamp
Silicone bellow
Carbon stator
Retention collar
O-ring
Clamp Jacket
Stainless steel rotor
Hose barb
For maintenance schedule refer to the PSS Maintenance Kits on page 10.
TECHNICAL SPECIFICATIONS
(Overall Compressed Length) C
Temperature Limits -13°F to 425°F (-25°C to 220°C) Pressure Limits 15 PSI (1 BAR) Shaft RPM Limits 10,000 RPM Carbon Graphite Lapped to 4 HLB (0.000044" tolerance) 316 SS / Nitronic 50 Faced to 9 Ra Bellow Material Mandrel formed silicone / fabric
B
A D
IMPERIAL SIZES
METRIC SIZES (mm)
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
1¾", 2", 2¼", 2½"
8.055" - 8.180"
2.875"
45, 50, 60, 65
8.055" - 8.180"
73
1¼", 1⅜"
32, 35
2¾", 3", 3¼", 3½"
9.555" - 9.743"
2.875"
70, 80, 85, 90
9.555" - 9.743"
73
2", 2¼", 2½", 2¾", 3", 3¼", 3½"
7.842" - 8.3305"
3.75"
50, 60, 65, 70, 75, 80, 85, 90
7.842" - 8.3305"
96
1½", 1 ⁹⁄ ¹⁶ ", 1¾", 2"
38, 40, 45, 50, 55
3¾", 4"
7.842" - 8.3305"
3.75"
95, 100
7.842" - 8.3305"
96
3¼", 3½", 3¾", 4"
8.675"
4.20"
85, 90, 95, 100
8.675"
107
2¼", 2½"
60, 65
4¼", 4½", 4¾", 5"
8.800" - 9.670"
4.20"
110, 115, 120, 125
8.800" - 9.670"
107
4", 4¼", 4½", 4¾", 5"
8.800" - 9.988"
5.00"
100, 110, 115, 120, 125
8.800" - 9.988"
127
2¾", 3"
70, 75, 80
5¼", 5½", 5¾", 6"
8.800" - 9.988"
5.00"
135, 140, 145, 150
8.800" - 9.988"
127
3¼", 3½", 3⅝", 3¾"
4½", 4¾", 5", 5¼", 5½", 5¾", 6"
9.350" - 11.300"
6.00"
85, 90, 95 115, 120, 125, 130, 135, 140, 145, 150 9.350" - 11.300"
153
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
5
| PSS SHAFT SEAL
PSS TYPE B For Shaft Diameters 4” - 6½” (100mm - 165mm)
COMPONENTS
For over 20 years, the type B seal has proven to be a workhorse for the commercial boat industry.
STAINLESS STEEL ROTOR The rotor on the Type B seal is manufactured out of Nitronic 50 stainless alloy. It is secured on the shaft a with large locking collar placed in front of the rotor. This collar (clamp) has a dual purpose: it secures the rotor in place on the shaft and is used as a tool during installation. The Nitronic 50 material is a very high grade of stainless steel which is almost totally corrosion resistant. This rotor does not need replacement under normal operating conditions. CARBON STATOR (DUAL INJECTED) The grade of carbon composite used in the PSS Shaft Seal has a maximum operating temperature of 500° F (+260° C) and will not melt if the seal runs dry for a short period of time unlike a lip seal or a plastic face seal. The high density of the carbon greatly increases the longevity and wear resistance. The carbon should not need to be replaced under normal operating conditions. BELLOW The Type B bellow is constructed out of high temp silicone laminated with either 4 or 5 plies of polyester fabric (aramid in larger sizes). On the larger models, the strength is greatly increased by the use of stainless steel hoops laid into the convolutions of the bellow.
Clamp Jacket
Steel hoops
Hose barb
Silicone bellow
Collar clamp
T-Bolt Clamp
O-ring
Carbon stator
Nitronic 50 Stainless steel rotor
For maintenance schedule refer to the PSS Maintenance Kits on page 10.
TECHNICAL SPECIFICATIONS
(Overall Compressed Length) C
Temperature Limits -13°F to 425°F (-25°C to 220°C) Pressure Limits 15 PSI (1 BAR) Shaft RPM Limits 7,000 RPM Carbon Graphite Lapped to 4 HLB (0.000044" tolerance) 316 SS / Nitronic 50 Faced to 9 Ra Bellow Material Mandrel formed silicone / fabric
A
D
B
IMPERIAL SIZES
METRIC SIZES (mm)
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
4", 4¼"
5½", 5¾", 6", 6¼", 6½", 6¾", 7"
12.189"
7"
100, 105, 110 140, 145, 150, 160, 165, 170, 180
310
178
4½"
5½", 5¾", 6", 6¼", 6½", 6¾", 7"
12.189"
7.875"
115
140, 145, 150, 160, 165, 170, 180
310
201
4¾”, 5”, 5½"
6½", 6¾", 7", 7¼", 7½", 7¾", 8", 8⁵⁄ ⁸ "
12.742" - 12.920"
7.875"
120, 130, 140
165, 170, 180, 185, 190, 195, 205, 220
315 - 324
201
6”
6½", 6¾", 7", 7¼", 7½", 7¾", 8", 8⁵⁄ ⁸ "
12.920" - 13.250"
8.875"
150
165, 170, 180, 185, 190, 195, 205, 220
328 -337
226
6½”
6½”, 6¾”, 7”, 7¼”, 7½”, 7¾”, 8”, 8⁵⁄ ⁸ ”
12.920” - 13.250”
8.875”
165
165, 170, 180, 185, 190, 195, 205, 220
328 -337
226
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
6
PSS SHAFT SEAL |
PSS TYPE C For Shaft Diameters 6½” - 8” (165mm - 203mm) Unlike other PSS Shaft Seals, the Type C has an integrated support for the carbon stator, so that it does not rely on the bellow for weight support. The PSS Type C Shaft Seal is available in three installation configurations: • Weld on Stern Tube • Flange Mounted • Flange Mounted with Integrated Bladder System
As with all PSS seals, the PSS Type C model is a mechanical face seal using the flat surfaces of the rotating rotor and the stationary carbon flange / ring to create a water tight, dripless system. Commercial oriented by design, the Type C system uses a N50 rotor fitted on the shaft in front of the carbon flange and is secured in compression with a 316L split collar. The stationary acetal/carbon stator is attached to a heavy duty silicone bellow clamped to the vessel using the appropriate mounting option.
TYPE C MODELS
WELD ON STERN TUBE Ideal for new construction installations, this system includes the standard Type C Seal and is designed as a weld on application. The internal tube will support the weight of the acetal/carbon stator so it stays centered to the shaft. Available in aluminum, mild steel or 316L, this mounting system ensures minimal installation time, integrates with many vessel configurations and eliminates the need for an additional adapter/bolt on system. 1. This clamp assembly maintains the PSS Type C preload/compression. 2. Nitronic 50 SS rotor surfaced to 9 Ra finish. 3. Machined acetal hub with carbon stator insert, lapped to 4 HLB. 4. Water is plumbed into the PSS Shaft Seal for cooling/lubricating the seal faces on high speed vessels. 5. Reinforced Silicone bellow houses the stationary acetal/carbon stator and is secured to the provided stern tube. 6. T-Bolt style hose clamps secure the bellow to the stern tube and the acetal/carbon stator in the bellow. 7. Stern Tube made from your choice of aluminum, mild steel or 316L stainless steel, will be welded directly onto the vessel.
FLANGE MOUNTED Ideal for retrofit or new construction installations, this system includes the standard Type C Seal and is designed as a bolt on application. The internal tube will support the weight of the acetal/carbon stator so it stays centered to the shaft. Available in aluminum, mild steel or 316L, this mounting system is machined to match your specific application/ existing flange pattern and is offered “pre-drilled” to your bolt pattern, size and spacing or supplied “blank” for simplicity and drilling at the time of installation. 1. This clamp assembly maintains the PSS Type C preload/compression. 2. Nitronic 50 SS rotor surfaced to 9 Ra finish. 3. Machined acetal hub with carbon stator insert, lapped to 4 HLB. 4. Water is plumbed into the PSS Shaft Seal for cooling/lubricating the seal faces on high speed vessels. 5. Reinforced Silicone bellow houses the stationary acetal/carbon stator and is secured to the provided stern tube. 6. T-Bolt style hose clamps secure the bellow to the stern tube and the acetal/carbon stator in the bellow. 7. Flange manufactured from your choice of aluminum, mild steel or 316L stainless steel.
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
7
| PSS SHAFT SEAL
Temperature Limits -13°F to 425°F (-25°C to 220°C) Working Pressure Up to 25 PSI (1.75 BAR) Max Pressure 50 PSI (3.5 BAR) Shaft RPM Limits 1,500 RPM Carbon Graphite Lapped to 4 HLB (0.000044” tolerance) 316SS / Nitronic 50 Faced to 9 Ra Bellow Material Mandrel formed silicone / fabric TECHNICAL SPECIFICATIONS
Carbon stator insert
Acetal hub
FLANGE & BLADDER MOUNTED Ideal for retrofit or new construction installations, this system includes the standard Type C Seal and is designed as a bolt on application. The internal tube will support the weight of the acetal/carbon stator so it stays centered to the shaft. Available in aluminum, mild steel or 316L, this mounting system is machined to match your specific application/ existing flange pattern and is offered “pre-drilled” to your bolt pattern, size and spacing, or supplied “blank” for simplicity and drilling at the time of installation. 1. This clamp assembly maintains the PSS Type C preload/compression. 2. Nitronic 50 SS rotor surfaced to 9 Ra finish. 3. Machined acetal hub with carbon stator insert, lapped to 4 HLB. 4. Water is plumbed into the PSS Shaft Seal for cooling/lubricating the seal faces on high speed vessels. 5. Reinforced Silicone bellow houses the stationary acetal/carbon stator and is secured to the provided stern tube. 6. T-Bolt style hose clamps secure the bellow to the stern tube and the acetal/carbon stator in the bellow. 7. Flange manufactured from your choice of aluminum, mild steel or 316L stainless steel. The inflatable bladder allows the operator to seal the stern tube, while the shaft is not rotating, in order to inspect, clean, or work forward of the seal. In addition, if the decoupling of the shaft is needed, this operation can be done in the water as the shaft can be moved aft with bladder inflated with minimal water intrusion occurring.
Air Valve
Inflatable Bladder
Air Valve Flange
Flange
Air Valve
Water
Water
BLADDER DEFLATED Allowing water flow.
BLADDER INFLATED Closing off water flow.
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
8
PSS SHAFT SEAL |
PSS RUDDER SEAL For Shaft Diameters 1¼” - 6” (32mm - 150mm)
COMPONENTS STAINLESS STEEL ROTOR
The rotor is manufactured out of 316L stainless steel. It is secured on the shaft using 2 pairs of set screws positioned at 90 degree angle for maximum holding power. This rotor does not need replacement or maintenance under normal operating conditions. CARBON STATOR The grade of carbon composite used in the PSS Shaft Seal has a maximum operating temperature of 500° F (+260° C) and will not melt if the seal runs dry for a short period of time unlike a lip seal or a plastic face seal. The high density of the carbon greatly increases the longevity and wear resistance. The carbon should not need to be replaced under normal operating conditions. BELLOW The bellow is molded out of a Nitrile compound. Nitrile is known for its resistance to petroleum products. It provides the best combination of durability, strength and elasticity necessary in this application.
Stainless steel rotor
Carbon stator
Hose clamp
Bellow
Clamp Jacket
D
A
TECHNICAL SPECIFICATIONS
Temperature Limits 5°F to 225°F (-15°C to 107°C) Pressure Limits 15 PSI (1 BAR) Shaft RPM Limits 10,000 RPM Carbon Graphite Lapped to 4 HLB (0.000044" tolerance) 316 SS / Nitronic 50 Faced to 9 Ra Bellow Material Molded Nitrile - PVC
C
B
IMPERIAL SIZES
METRIC SIZES (mm)
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
1¾”, 2”, 2¼”, 2½”
6.625” - 6.75”
2.875”
45, 50, 60, 65
168 - 172
73
1¼”, 1⅜”
32, 35
2¾”, 3”, 3¼”, 3½”
8.125” - 8.313”
2.875”
70, 80, 85, 90
206 - 211
73
2”, 2¼”, 2½”, 2¾”, 3”, 3¼”, 3½”
8.00” - 8.218”
3.75”
50, 60, 65, 70, 75, 80, 85, 90
203 - 209
96
1½”, 1⁹⁄ ¹⁶ ”, 1¾”, 2”
38, 40, 45, 50, 55
3¾”, 4”
8.405”
3.75”
95, 100
213
96
3¼”, 3½”, 3¾”, 4”
8.625”
4.20”
85, 90, 95, 100
219 - 224
107
2¼”, 2½”
60, 65
4¼”, 4½”, 4¾”, 5”
9.25”
4.20”
110, 115, 120, 125
235
107
4”, 4¼”, 4½”, 4¾”, 5”
9.125” - 9.313”
5.00”
100, 110, 115, 120, 125
231 - 237
127
2¾”, 3”
70, 75, 80
5¼”, 5½”, 5¾”, 6”
9.25” - 9.438”
5.00”
135, 140, 145, 150
235 - 240
127
3¼”, 3½”, 3⅝”, 3¾”
4½”, 4¾”, 5”, 5¼”, 5½”, 5¾”, 6”
9.675” - 9.863
6.00”
85, 90, 95
115, 120, 125, 130, 135, 140, 145, 150
245 - 250
153
4", 4¼"
5½", 5¾", 6", 6¼", 6½", 6¾", 7"
12.189"
7"
100, 105, 110 140, 145, 150, 160, 165, 170, 180
310
178
4½"
5½", 5¾", 6", 6¼", 6½", 6¾", 7"
12.189"
7.875"
115
140, 145, 150, 160, 165, 170, 180
310
201
4¾”, 5”, 5½"
6½", 6¾", 7", 7¼", 7½", 7¾", 8", 8⁵⁄ ⁸ "
12.920" - 12.742"
7.875"
120, 130, 140
165, 170, 180, 185, 190, 195, 205, 220
315 - 324
201
6”
6½", 6¾", 7", 7¼", 7½", 7¾", 8", 8⁵⁄ ⁸ "
12.920" - 13.250"
8.875"
150
165, 170, 180, 185, 190, 195, 205, 220
328 -337
226
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
9
| PSS SHAFT SEAL
PSS ACCESSORIES
For All PSS Shaft Seal Models
MAINTENANCE KIT To ensure longevity and proper function of the PSS Shaft Seal, PYI provides a PSS Maintenance Kit to follow PYI’s recommended maintenance schedule. As with any rubber/silicone hose below the waterline, the PSS bellow must be inspected on a regular basis for any sign of wear, aging or chemical deterioration. PYI recommends that the bellow be replaced once every 6 years (for Type A Seals) and 8-10 years (for Type B or PRO Seals). It is also recommended that the hose clamps, as well as the O-Rings and set screws in the stainless steel rotor, be changed out during the bellow replacement. PYI includes all of the necessary replacement parts in the PSS Maintenance Kit.
O-RING KIT If the PSS Shaft Seal needs to be removed and re-installed, PYI suggests that you replace the o-rings, and more importantly, change the set screws as they are designed for one time use. This is a replacement kit for the o-rings and set screws.
TYPE A SEAL MAINTENANCE KIT
TYPE B & PRO SEAL MAINTENANCE KIT
Includes
• Set screws - 5 qty. • O-rings - 2 qty. • Allen wrench • Medium strength thread lock • Clamp Jackets - 4 qty.
Includes
Includes
• Bellow • Set screws - 5 qty. • O-rings - 2 qty. • 316L hose clamps - 4 qty. • Clamp Jackets (Hose clamp tail covers) • Medium strength thread lock • Wrench • Instructions
• Silicone bellow • Set screws - 5 qty. • O-rings - 2 qty. • 316L hose clamps - 4 qty. • Clamp Jackets (Hose clamp tail covers) • Medium strength thread lock • Wrench • Instructions
Section view depicting the o-rings and set screws inside the stainless steel rotor of a PSS Shaft Seal.
SHAFT RETENTION COLLAR The Shaft Retention Collar (SRC) is designed to protect propeller and rudder shafts. It assists in keeping the shaft and rudder in the boat in the event of a coupling failure. Due to its simple design the SRC is very easy to install with the shaft or rudder in place. Available in sizes to fit shafts from ¾” to 3¾” or 25mm to 95mm. More SRC product info on page 16.
PYI HOSE CLAMPS Entirely 316L stainless steel with a non-perforated, rolled edge,
embossed band with a one-piece double locked screw cage. More PYI Hose Clamp product info on page 77.
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10
PSS SHAFT SEAL |
PSS ACCESSORIES For All PSS Shaft Seal Models
T-KIT PYI offers T-Kits to help facilitate the installation of the PSS Shaft Seal. These T-Kits enable the installer to tee into the raw water discharge hose and plumb water to the hose barb fitting of the PSS Shaft Seal. Some examples of water pick-up points are: between the heat exchanger and riser, between oil cooler and heat exchanger and between the water pump and oil cooler.
INSIDE HOSE DIAMETER
PART #
07-KIT-012 07-KIT-034 07-KIT-100 07-KIT-114 07-KIT-112
½" ¾"
1"
1¼" 1½"
Includes
• T-Fitting • 6’ of ³⁄ ⁸ ” hose • Hose clamps
REMINDER Measure the inside diameter of the cooling hose which you intend to tee off from before ordering.
Correct T-Kit installation
FLOW INDICATOR PYI offers an Inline Flow Indicator. This paddle wheel/sight flow indicator will allow the boat owner to quickly confirm positive water flow running to the seal/through the line. When installed in-line, the paddle will spin if positive water flow is present and will ensure the seal is getting the necessary water to keep it lubricated. The flow indicator is fitted with 3/8” hose barbs.
Includes
• Flow indicator • 3/8” hose barbs - 2 qty. • 316L hose clamps - 4 qty. • Clamp Jackets (Hose clamp tail covers)
Correct Flow Indicator installation.
HY-VENT PYI is now offering the Taco Hy-vent for sailboats and other low speed watercrafts. This nickel plated brass vent is to be installed at the end of the vent line. It is a float style vent/valve that will allow air out while restricting water flow in that direction. If any water or backflow is to come up the line from the seal, the vent will close off, keeping the water from entering the engine room. Once the water flow subsides, the float will open allowing air to freely vent. This product is a great option to maintain an air free system and ensure the engine room stays dry in the event of back flow; from prop wash, unusual external pressure, backing down, etc.
Includes
• Hy-Vent • 3/8” hose barb - 1 qty. • 316L hose clamps - 2 qty. • Clamp Jackets (Hose clamp tail covers)
Correct Hy-Vent installation.
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11
| PSS SHAFT SEAL
INSTALLATION EXAMPLES
REPLACEMENT OF CLASSIC STUFFING BOX
Classic Stuffing Box... Before
PSS Shaft Seal... After
Stern Tube (Shaft Log)
Stern Tube (Shaft Log)
Compressed Length
Stuffing Box
Shaft
Shaft
Hull
Transmission Hull
Transmission
Rubber Hose
EXAMPLE OF POWERBOAT INSTALLATION
Water Pickup Line
Vented Loop
Water Pickup Line
Crossover Line
SAILBOAT INSTALLATION
POWERBOAT INSTALLATION
Heat Exchanger Riser
Vent line (Above water line)
Oil Cooler
Water Pump
REMINDER
1. Tee into line after heat exchanger. 2. Tee into line after oil cooler. 3. Tee into line after water pump. 4. Hose barb into heat exchanger or oil cooler.
When the pick up point is located below the waterline an anti- siphon might be required to prevent back flooding of water through the exhaust system and into the engine. Standard boat plumbing practices should be followed.
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12
PSS SHAFT SEAL |
PSS FLANGE & BLADDER SYSTEM
For Shaft Diameters 4” - 6” (100mm - 150mm)
Available in aluminum, mild steel and stainless steel
A large number of commercial vessels are manufactured with a multi- bolt flange in lieu of a stern tube. PYI offers fully customizable flange options to match the existing standard bolt pattern on the vessel (or blank to be drilled at installation) and facilitate the installation of the PSS Shaft Seal (or other shaft log mounted seals). These adapters can be ordered in any configuration as a “standard unit” or as an “inflatable bladder unit”. The inflatable bladder option allows the operator to seal the stern tube, while the shaft is not rotating, in order to inspect, clean, or work forward of the seal. In addition, if decoupling of the shaft is needed, this operation can be done in the water as the shaft can be moved aft with the bladder inflated with minimal water intrusion occurring. This inflatable bladder can also be used in case of an emergency.
Inflatable bladder
Air valve
CROSS SECTION OF FLANGE & BLADDER SYSTEM
Air Valve
PSS Shaft Seal
Inflatable Rubber Bladder
Pre-Drilled or Blank Flange
Boat Flange
Shaft
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13
| PSS SHAFT SEAL
PSS STANDARD FLANGES For Shaft Diameters 4” - 6” (100mm - 150mm)
Not all vessels require a flange and bladder system, but most require a flange. To that effect PSS is offering flanges in all common materials (316 stainless steel, mild steel and aluminum). As all flanges are manufactured to order on our CNC lathes and mills, we can accommodate all patterns and shapes.
HOW DOES IT WORK? An inflatable nitrile rubber bladder is nested in the flange. Once inflated to approximately 10 - 15 PSI, the bladder will come into contact with the shaft, creating a water tight seal. Deflate the rubber bladder to retract the bladder from the shaft allowing water back through - no damage is done to the shaft during this process. Bladder replacement is recommended every 10 years under normal use and varies dependant on water condition. The bladder can only be used with a stationary shaft.
BLADDER INFLATED Closing off water flow
BLADDER DEFLATED Allowing water flow
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14
PSS SHAFT SEAL |
OTHER APPLICATIONS WATER UTILITY, MIXING TANKS & WATER FILTRATION SYSTEMS Specifically developed for surface water production plants, PSS Shaft Seals are installed on many horizontal mixer applications used in flocculation basins for rapid sand filtration plants and corrugated box/sheet production facilities.
PUMP & FLOW TANK INSTALLATIONS
PYI’s ability to customize solutions allow PSS Shaft Seals to be integrated into space sensitive installations on specific pumps and flow tanks.
THERAPY & EXERCISE POOLS PYI has developed and supplies
mechanical seals at the OEM level for industry leading manufacturers of therapy and exercise pools used in healthcare and sport specific applications.
VERTICAL PUMPS, IRRIGATION & MINING
The ability of the PSS Shaft Seal to function in a dirty/ silty environment, as well as its tolerance for radial movement makes it an ideal solution for the irrigation and mining industry. PYI’s ability to customize sealing solutions has paved our way into this industry.
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15
| PSS SHAFT SEAL
SHAFT RETENTION COLLAR
For Shaft Diameters ¾” - 3¾” (25mm - 95mm)
PYI has a simple solution to assist in keeping the shaft in the boat. We have all heard horror stories of boats sinking when a coupling breaks and the shaft is ripped out of the boat.
The PYI Shaft Retention Collar (SRC) is designed to help retain the Propeller or Rudder shaft in your vessel in the event of catastrophic failure of the coupling or if the shaft comes free from the coupling.
Very simple to retrofit to existing prop and rudder shafts, the SRC is a cost-effective and quick solution that could save thousands of dollars.
A
B
C
A
B
C
PART #
07-SRC-034 07-SRC-078 07-SRC-100 07-SRC-118 07-SRC-114 07-SRC-138 07-SRC-112 07-SRC-134 07-SRC-200 07-SRC-214 07-SRC-212 07-SRC-234 07-SRC-300 07-SRC-314 07-SRC-312 07-SRC-334 07-SRC-25M 07-SRC-30M 07-SRC-35M 07-SRC-40M 07-SRC-45M 07-SRC-50M 07-SRC-55M 07-SRC-60M 07-SRC-65M 07-SRC-70M 07-SRC-75M 07-SRC-80M 07-SRC-85M 07-SRC-90M 07-SRC-95M
¾” 7 / 8 ”
1½” 1 5 / 8 ” 1¾” 1 7 / 8 ” 2 1 / 16 ” 2¼” 2 3 / 8 ”
½” ½” ½” ½” ½”
1”
DOUBLE SPLIT DESIGN The double split design provides the maximum in axial holding power with the benefit of quick and efficient assembly with the shaft installed.
EASY INSTALLATION Design fully engages the shaft without marring. Easily installed where major disassembly would otherwise be required. Greater axial holding power than set screw or one-piece clamping collars. Effective on hard and soft shafts. Very simple to retrofit to existing prop shafts and rudder shafts. A cost effective and quick solution that could save thousands.
1 1 / 8 ” 1¼” 1 3 / 8 ” 1½” 1¾”
9 / 16 ” 9 / 16 ” 11 / 16 ” 11 / 16 ”
2¾”
2”
3”
2¼” 2½” 2¾”
3¼” 3¾”
¾" ¾” 7 / 8 ” 7 / 8 ” 7 / 8 ” 7 / 8 ” 7 / 8 ”
4”
3”
4¼” 4 5 / 8 ” 4 5 / 8 ” 4 7 / 8 ”
3¼” 3½” 3¾”
25mm 45mm 15mm
30mm 35mm
54mm 15mm 57mm 15mm
40mm 60mm 15mm
45mm
73mm
19mm
50mm 78mm 19mm 55mm 82mm 19mm 60mm 88mm 19mm
65mm
93mm
19mm
70mm 98mm 19mm
ADDITIONAL SECURITY Provides additional security for lip seals, packing gland, rudder post or PSS Shaft Seal.
75mm
103mm
19mm
80mm 108mm 19mm
85mm 118mm 90mm 121mm
23mm 23mm
95mm
137mm 23mm
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16
SHAFT RETENTION COLLAR |
MAX-PROP Automatic Feathering Propellers
THE STORY Max-Prop was designed and built in the early 1970’s by Maximillian Bianchi in Milan, Italy. Max, a young Italian engineer, invented a new type of propeller at the request of a sailboat racing friend in the golden days of the IOR racing rules. Little did he know at the time, this simple product would become his lifelong passion and livelihood. To this day, Max still oversees any new development of the product and follows it all the way through the manufacturing process. It is hard to believe, but Max quality checks each and every propeller that comes out of his factory. Nowadays, his son and daughter work with him, so the legacy will continue long after Max retires...if he ever does. THE FOUNDRY In order to keep the metal quality to a constant high standard, Max bought a foundry in the mid 70's. To this day, the majority of Max-Prop cast parts are made in that foundry near Lake Cuomo, a two hour drive from Milan. The ownership of this foundry not only resulted in high quality cast parts, but also insured that any defect in the material or the part would not be passed on to the next stage of machining. This vertical integration is one of the main reasons for the success and durability of Max-Prop. THE MACHINE SHOP The actual machining of the propellers has always been under the full supervision of Max, from the early days of manual lathes and mills to the ultra-modern CNC machines of today. Through the years, the machine shop has had multiple locations and currently is in Milan, in the same building as the sales offices, management and where the final assembly of the Max-Prop occurs. Once again, Max himself oversees each and every process. SALES OFFICE PYI is the only sales office for Max-Prop in North/South America and Asia. Since then, PYI has added products which are well known in the sailing community, some as a manufacturer and some as a distributor. Through the years, Max-Prop has been the driving force for PYI, allowing us to facilitate the manufacturing of other quality products.
1972 Original
1978 2 Blade Classic
1982 3 Blade Classic
1989 3 Blade V.P.
2002 4 Blade Fast
2008 3 Blade Gen II
2013 3 Blade Easy
2013 4 Blade Easy
2015 5 Blade Whisper
2017 2 Blade Easy
2018 5 Blade Boomerang
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17 | MAX-PROP
Maximilian Bianchi Circa 1972
Maximilian Bianchi Circa 2018
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18 MAX-PROP |
Benefits of a Max-Prop Propeller BENEFITS
VERY LOW DRAG UNDER SAIL Under sail a Max-Prop will increase sailing speed between 10% to 15% compared to a fixed blade propeller, the largest difference being noticed when sailing in light air. The drag under sail varies widely between propellers, number of blades, angle of the shaft as well as location of the propeller on the boat. It is fair to say that a 2 blade Max-Prop propeller located on a horizontal shaft (sail-drive) will have the least drag while a 5 blade Max-Prop on a high angle shaft will have the most drag. However, even a 5 blade Max-Prop on a high angle shaft will have substantially less drag and provide more power when motoring than a fixed 2 blade propeller.
Whether purchasing, refitting, or re-powering, a boat owner is faced with a somewhat confusing choice of propellers: fixed bladed, folding, feathering, brands, material, number of blades. It becomes daunting. So why choose a Max-Prop?
RELIABILITY IN OPERATION Max-Props are "feathering propellers". Unlike folding propellers, Max-Props do not rely on centrifugal force to open. Instead, the Max-Prop relies on the torque from the shaft rotation acting on the "differential" type gear design in the body of the propeller. This in turns ensures an immediate opening in forward and more importantly, in reverse, unlike folding propellers which have a lag time in reverse.
RELIABILITY OVER TIME Through the years, Max-Prop propellers have acquired a flawless reputation for reliability and longevity. It is not uncommon to see a boat built in the 70's or 80's still using its orginally installed Max-Prop. A simple check on the internet would allow you to see the renowned reputation of Max-Prop. While we all wish that we could sail all the time, a propeller is a very important part of any sailboat. Sailboats end up powering a substantial amount of time and sometimes, in an emergency, we have to use our engine. In times like this it is critical to know that your propeller will open and will function as designed. Max-Prop has proven that time and again for decades.
PROPELLER DRAG
10 15 20 25 30 35 40 45
0 5
1
2
3
4 5 6 7 8
Boat speed in knots
Max-Prop 2 Blade Max-Prop 3 Blade Max-Prop 4 Blade
Max-Prop 5 Blade Fixed 3 Blade
EFFICIENT IN FORWARD While not always as efficient as a perfectly sized fixed propeller, the right choice of Max- Prop diameter, pitch and number of blades will usually achieve 96% or better efficiency compared to a fixed blade propeller. This maximum of 4% drop in efficiency is only seen at maximum throttle, which is seldom, if ever, used. The fact that with a Max-Prop, a boat owner or a designer can choose not only the diameter and number of blades of the propeller but can also adjust the pitch easily after sea trials makes the Max-Prop an ideal tool to fine tune a boat’s performance under power.
EFFICIENT IN REVERSE The simple fact that the Max-Prop blades use the same leading edge and pitch in reverse as in forward results in identical power in both directions. A fixed blade propeller loses almost 50% of its power in reverse. Worse yet - a folding propeller which, depending on the brand, can lose up to 80% of its power in reverse. The Max-Prop blades switch from forward to reverse instantaneously. It takes only ¾ of the shaft rotation for the blade switch to occur.
BOLLARD PULL In kg, engine 50 HP, propeller diameter 18"
100 150 200 250 300 350 400
0 0 300 450 600 750 900 1050 1200 50
Shaft RPM
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19
| MAX-PROP
MAX-PROP MODELS
The Max-Prop is available in four different models, each unique for certain applications, but all feature the legendary Max-Prop low drag and smooth running. EASY • 2, 3 and 4 blade designs • Ships fully assembled for easy installation in or out of the water • Simple pitch adjustment, no disassembly needed • 2 Blade models offer the least drag so are ideal for racers or smaller cruising boats
• 3 and 4 Blade models offer more power and eliminate vibrations • 3 or 4 Blade models are ideal for a local or long range cruiser • Available from 12" to 26" diameter and for ¾" to 1¾" shafts
WHISPER • 5 blade design offers ultra-quiet powering and extra power • Ideal for heavy displacement cruisers or large cruising yachts • Simple externally adjustable pitch with no need for a haul out • Ships fully assembled for easy installation in or out of the water • Available up to 44" diameter and 3½" shafts BOOMERANG • 5 blade design offers ultra-quiet powering and extra power • Spring assisted instantaneous feathering • Immediate feathering with electronic shift mechanisms • Ships fully assembled for easy installation in or out of the water • For high speed vessels or vessels with electronic shift transmission • Available from 18" to 44" diameter and up to 3" shafts
EASY ANTISHOCK FOR SAILDRIVE • Antishock dampening device • 2, 3 and 4 blade designs • Designed to fit SailDrives from Volvo, Yanmar, TwinDisc, ZF, Sillette, or Bukh • Ships fully assembled for easy installation in or out of the water • Simple pitch adjustment, no disassembly needed • 2 Blade models offer the least drag, so are ideal for racers or smaller cruising boats • 3 and 4 Blade models offer more power and eliminate vibrations • Available from 14" to 20" diameter
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20
MAX-PROP |
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