The manual operator (MO) allows technicians to manually open or close the valve

Does this replacement include the internal seat cup

vibration-resistant fit in standard control panels

and GV series boilers

While the Series 26 is optimized for low water cut-off and boiler feedwater control

Lochinvar & A.O. Smith 100110273 Gas Valve 318820-201 The manual operator (MO) allowsThe Lochinvar & A. O. Smith 100110273 Gas Valve is a critical OEM replacement component designed for high recovery residential water heaters. This 120V natural gas valve features a 4" WC pressure rating and a 1 2" NPT inlet, specifically engineered for the A. O. Smith GPDH, GPDT40, and GPDT50 series. As a precision calibrated gas control valve, it utilizes a 1. 45" shank to ensure proper seating and thermal sensing within the tank. For technicians