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• . . <br /> Component Description <br /> 2-3.3 Mechanical Gas Valve, P/N B12007X <br /> A Mechanical Gas Valve is required on systems used to protect gas-fueled appliance(s).Upon system <br /> actuation,the control stem closes,stopping the gas flow to the appliance(s). <br /> Note: Only Mechanical Gas Valves that are specifically UL listed and identified by part number in <br /> this manual may be used with the Range Guard system. <br /> 3 <br /> CONTROL STEM <br /> iff- <br /> uI <br /> INLET I! I" ' <br /> OUTLET <br /> —rap il <br /> --- 1 7nlie <br /> Figure 2-41. Mechanical Gas Valve, P/N B12007X <br /> Table 2-17.Mechanical Gas Valve Sizes <br /> Pipe Size Part Number <br /> 3/4 in.(19 mm) B120071 <br /> 1 in.(25.4 mm) B120072 <br /> 1-1/4 in.(32 mm) B120073 <br /> 1-1/2 in.(38 mm) B120074 <br /> 2 in.(51 mm) B120075 <br /> 2-1/2 in.(64 mm) B120076 <br /> 3 in.(76 mm) B120077 <br /> January 2007 2-38 P/N 9127100 <br /> RPIV4 <br />