1940’s 50’s gas valve

boilerman06

Anybody have input on how this gas valve works? Steam boiler 

ScottSecor

We need more information, perhaps a photo?

All of residential gas valves I can think of require voltage, some need millivolts, some need 24 volts and some need 120 volts. I suppose there are others, but I am not familiar with them. When power is applied to them the plunger moves and allows gas to enter the manifold.

boilerman06

Sorry pics did not upload yesterday. They are there now 

retiredguy

That is an old Detroit Lubricator gas valve that I saw in the late 1960's and early 1970's. Even at that time they were almost very hard to find brand new. I think that I bought the few that needed replacing from Sid Harvey or Anchor Supply. These valves came with a few built-in devices including a temperature control that also allowed for a modulating gas input for a hot water system. They were a very good quality gas valve which was also very expensive. Most of the time we would just replace them with the necessary controls since they were very hard to buy. I am guessing that the boiler is an old American Standard due to the color of the paint. When new, that model boiler was a "best in show" and was equipped with that gas valve.

Tim McElwain

Time to do a recontrol kit. Those valves have been lon gone.

HVACNUT

I'm scared just looking at it.

pedmec

That thing is older than me.