Atwood Replacement Water Heater Gas Control Valve with Thermostat. For use on recreational vehicles only, not for home use. For LP gas only. 11 inch water column. Adjustable from 120 to 160 degrees F. 3/8 inch FPT x 1/4 inch FPT. 1-1/4 inch L shank. Fits on Atwood Bowen Models: GC-6A3, G610-3, G610-3, GH6-3, G610-3B, GH610-3.