W29 PEL21S TYPE GAS CONTROL TAP / VALVE - FLAME SUPERVISON DEVICE
W29 Gas Valve is the best equivalent of PEL 21S for Gas Appliances - M16x1.5 Inlet/Outlet, Thermocouple M9x1. Shaft Flat Position: Flat is at the bottom when in the "off" position. Thermocouple Connection: M9x1.