Its Single Pole Single Throw (SPST) configuration ensures a clean

2-way normally closed direct-acting solenoid valve specifically engineered for the precise control of fuel gas in commercial and industrial burners

ensuring the precise air-to-fuel ratio necessary for stable ignition and efficient thermal performance in residential and commercial heating systems

This #55 drill size orifice is specifically used for Liquid Propane (LP) conversions where a smaller aperture is required compared to standard Natural Gas orifices to compensate for the higher energy density of LP

Trane VAL19557 Reversing Valve Els PW 17895 Its Single Pole Single ThrowThe Trane VAL19557 Reversing Valve is a critical 4 way heat pump component engineered to manage refrigerant flow direction between heating and cooling cycles. This OEM Trane replacement part features a precise . 500 OD (1 2 inch) connection size on the discharge suction ports, ensuring a streamlined fit for residential and light commercial units. Designed for high cycle reliability in high pressure systems, the VAL19557 serves as the direct