Reply To: Finding replacement/substitute for obsolete gas control valve

The Tank Finding replacement/substitute for obsolete gas control valve Reply To: Finding replacement/substitute for obsolete gas control valve

#24259
Larry Weingarten
Participant

Hello, This may be a long shot, but sometimes the control knob on top of the gas valve doesn’t work too well, particularly if dirty, dusty or cracked. Try turning it completely off first, then back to pilot. light the pilot, then to the on position and see. In the past, the instructions often gave this sequence for lighting. Before doing this, play with the knob to see that it moves the full range, freely. If that doesn’t work, you really just need a control that fits the space. White Rogers and Robertshaw were the two main manufacturers, and each had a control with a long shank and one with a short shank (the part that screws into the tank), depending on the thickness of the insulation. If you can find a new Robertshaw control with the right shank length, you ‘ll be fine. A nice thing about the Robertshaw valve is there is a main burner adjustment on top center knob. Usually a small green plastic cap can be unscrewed and this exposes the metal adjustment screw. Backing it out reduces pressure to the main burner, so you can get a clean, (with no yellow) flame. If any of this sounds too technical, please do get qualified help as you don’t want things going wrong with gas! 😕

Yours, Larry

Water Heater Rescue

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