Maxon 200SMM11AA11BA-1A0 Gas Valve 340155-7026 What is the difference between

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Manufactured from high-grade brass to resist corrosion and thermal fatigue

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Maxon 200SMM11AA11BA-1A0 Gas Valve 340155-7026 What is the difference betweenThe Maxon 200SMM11AA11BA 1A0 is a heavy duty 2 inch ANSI threaded gas valve engineered for industrial combustion systems requiring a manual reset safety shut off mechanism. Built with a rugged cast iron body and a standard port flow capacity, this 2 way normally closed valve ensures positive sealing in general purpose fuel gas applications. The internal configuration features Buna body O rings and bumpers paired with Internal Trim Package 1, optimized