Lochinvar & A.O. Smith 100172006 Gas Valve Els PW 29614 Fail Safe Reliability: Proven internal spring return Fail Safe Reliability: Proven internal spring return mechanism ensures dampers return to their designated safety position during signal interruptions The inclusion of EPDM seats makes this kit ideal for hot water and steam service where chemical resistance and thermal stability are critical for maintaining the factory pressure rating The 100172006 gas valve is typically shipped for natural gas applications but can be converted to propane using the manufacturer specified LP conversion kit to ensure correct spring tension and orifice delivery High Flow Capacity: Standard 3 4" inlet and outlet ports accommodate high BTU load requirements for commercial applications