Accessories | Observation Ports
Bulletin 8790 page 4
LIGHTING PORTS
North American lighting ports have a swing-a-way door (not gas tight) that allows access to a chamber. They have a threaded connection for attaching to a burners pilot connection. This allows a torch to be used to manually light a burner. They can also be used to provide temporary access to a chamber for a temperature or gas sampling probe. These ports feature, stainless steel construction, and a locking knob to secure the door. The locking knob can be removed and replaced with a simple bolt to act as a stop for the free swinging door.
4-59726-1
4-59727-1
2.56 (65)
2.88 (73)
4.0 (102)
1-1/2" NPT(F)
Order: 4-59726-1 for solid door 4-59727-1 with 8790-0 observation port in door
2.2 (56)
BLAST GATE WITH THREADED CONNECTIONS
The R930-4945 blast gate is ideal for use with the 8790-4-A series of observation ports.
A threaded blast gate can be used to protect observation ports from damage due to high radiant hear and temperature condi- tions. The blast gate is installed between the furnace opening and the observation port. It can be opened for the limited time that observation or inspection is required. These blast gates are made from cast iron (maximum temperature = 425 °F/218 °C) and have a 304 stainless steel blade and shaft to handle temperatures up to 1000 °F (357 °C)
D (open)
C
A
Part
A Thread size Dimensions in inches (mm)
Number
NPT(F)
B
C
D
R930-4945
2
2.8 (71) 9.0 (229) 11.2 (285)
B
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC. IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL .
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
Made with FlippingBook flipbook maker