The Maxitrol KR-4812 is a precision-engineered seal cap with gasket designed specifically for Maxitrol gas pressure regulators

a pressure switch error code on the control board

Robust Construction: Resists thermal stresses and oxidation common in gas-fired copper-tube boilers and water heaters

preventing issues with under-firing or hazardous carbon monoxide production

Heavy-Duty Construction: Features a stainless steel sensing bulb and robust valve body rated for a Maximum Working Pressure (MWP) of 660 psig

Siemens Building Technology 277-03169 Valve Assembly 323080-701 The Maxitrol KR-4812 is aThe Siemens Building Technology 277 03169 Valve Assembly is a heavy duty 2 way normally open globe valve designed for precision flow control in demanding hydronic and steam applications. Built with a rugged bronze body and brass trim, this 1 1 2 inch NPT assembly provides a high flow capacity with a 25 Cv rating and an equal percentage flow characteristic for stable modulation. The unit is powered by a high torque 8 inch pneumatic actuator featuring