Accessory Valves
Sequence Valve
Sequence Valve Control the timing of fixture devices. Specialized construction resists corrosion which can cause other styles to “misfire.” Direct acting poppet style construction. Manifold mountable. Cartridge may be installed directly into your manifold. Two-port design eliminates need for third fluid line to drain bypass flow (internal leakage) back to system reservoir. True sequence design allows full system pressure downstream of valve after opening. n Recommended Filtration: 25 Micron (NOM) / 40 Micron (ABS) (minimum). DON’T
Sequence Valve Model No.
Set Pressure Range
Max Flow Rate
A B
70-4400-01 300 to 900 psi 4.7 2.37 3.0 gpm 70-4400-02 750 to 5,000 psi 4.1 1.75 1.5 gpm *Maximum Inlet Pressure for sequence valve is 5,000 psi.
Filter Plate For above Valves Model No. 70-8420-03
Order a Filter Plate to protect valve from debris. (More details end of section)
1.25
Adjustment Screw
Lock Nut
2X .93 Hex
B
SAE 2 Outlet Port*
SAE 4
Inlet Port
2X .52
.180
A
SAE 4 Outlet Port
DO
DON’T
3X 1.28
1.500
2.00
SAE 2 Inlet Port*
2X .56
1.00
1.250
.63
1.31
SAE 4 Inlet Port
2.50
1.25
2X .281 THRU
ILS704400 REV Q
NOTE: When using multiple sequence valves. For pressure set range 300 to 900 psi
*SAE 2 Ports are counterbored for o-rings that are used in manifold mounting applications. .09/ .15 FEED HOLES Excess flow voids warranty.
a 100 psi spread between pressures is recommended. For pressure set range 750 to 5000 psi a 500 psi spread between pressures is recommended.
DO
For proper sealing, mating surface should be flat to 0.003 in. with a maximum 63 R a µin. surface finish.
Manifold Mount Valve is 100% stainless steel construction and resists the corrosion which can cause other styles to “misfire.” Direct acting poppet style construction, adjustable cartridge type construction. Cartridge may be installed directly into your manifold. Two-port design eliminates need for third fluid line to drain bypass flow (internal leakage) back to system reservoir. True sequence design allows full system pressure downstream of valve after opening. n Recommended Filtration: 25 Micron (NOM) / 40 Micron (ABS) (minimum). Operation : The VektorFlo ® sequence valve operates as a pressure sensitive, normally closed element in a clamping system. When fluid first enters the system at low pressure, the valve is closed, blocking the flow of fluid to devices downstream. After devices in the other branches of the system have moved into position, the pressure begins to increase. The increasing pressure overcomes the spring force holding the valve closed, forcing the poppet off its seat and allowing fluid flow through the valve. After all devices have positioned and clamped, the downstream pressure increases to equal upstream pressure. Pressure throughout the system will increase to the maximum setting on the hydraulic power supply. When unclamping, as pressure falls, force from the adjustment spring pushes the poppet back onto its seat. Fluid trapped in the downstream circuit flows back through the check seat to return to the power unit reservoir.
Manifold Mount Sequence Valve Model No. Set Pressure Range A B Max Flow Rate 70-4410-01 300 to 900 psi 4.41 2.36 3.0 gpm 70-4410-02 750 to 5,000 psi 3.81 1.74 1.5 gpm *Maximum Inlet Pressure for sequence valve is 5,000 psi. Excess flow voids warranty
Counterbored for o-rings that are used for manifold mounting. .09/ .25 OIL FEED HOLES
.50 HEX
M-10
NOTE: When using multiple sequence valves. For pressure set range 300 to 900 psi a 100 psi spread between pressures is recommended. For pressure set range 750 to 5000 psi a 500 psi spread between pressures is recommended. Maximum system flow rate is 1.5 gpm for all VektorFlo® special function valves unless otherwise noted.
.94 HEX
.22
TIGHTEN TO 35 FT-LBS (47.5 Nm) TORQUE
B
.4 38 MANIFOLD MOUNT PRESSURE OUTLET PORT USES 2-011 O-RING
A
2X
.375
.500
2X 30
2X
.218 THRU
1.312
2X .43
1.67
2X .195
2X
2X .66
2X
.052
.531
40
1.25
.438 MANIFOLD MOUNT PRESSURE INLET PORT USES 2-011 O-RING
1.062
2X .73
ILS704403 REV A
1.46
2X .250 OIL FEED HOLE
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