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Saturday, June 28, 2014

Honeywell gas valve lasts almost 60 years

Repaired a GE gas furnace that was installed in the 50's. The gas valve wouldn't shut all the way off....
Honeywell gas valve and replacement on top. This furnace does not have a "safety pilot cut off" and the gas to the pilot is on all the time. The pilot is proven by a bi-metal switch. You can see the switch and pilot in the lower center. The main gas valve is just that with no thermocouple or pilot stuff. Valve does have a pressure regulator.
Here is the old valve apart. You can see the flapper has not been hitting the seat on center. Sometimes it missed and got hung up on the washer letting some gas through. Sometimes one burner row would stay on a little...
Here is the flaps attachment to the solenoid, the swage has come loose.
I can move the flap to the correct position with my finger but it won't stay.
Swaged connection has been working loose for a while. Time to replace the valve with new.

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