the 100277715 is the official manufacturer-designated replacement for the older 100188941 part number

this dual-redundant solenoid valve ensures reliable ignition and consistent manifold pressure

it is recommended to install a water softener or scale inhibitor if the local grains of hardness are high

leading to premature fouling and a drop in static pressure performance

This Class 2 transformer features primary voltage taps for 115V

Resideo PCV150 Check Valve 340155-7024 the 100277715 is the officialThe Resideo PCV150 Check Valve is a heavy duty 1 1 2 inch circulating pump check valve engineered to maintain unidirectional flow and eliminate gravity circulation in high demand hydronic heating and chilled water systems. Specifically designed for compatibility with the PC3F4344IUF00 and PC3F43 series wet rotor circulators, this valve provides a robust solution for preventing backflow and reverse pump rotation during shutdown. This in line flow check