Veteran techs recommend ensuring the diaphragm is lightly powdered (common baby powder works) to prevent binding against the housing during high-pressure operation

the 25-601-00 comes standard with a 1/4" needle drain in the lower arm

These adapters are primarily designed for hydronic (water) heating systems

Direct OEM Compatibility: Verified for use in Honeywell NXS and NXL series Frame Size 4 drives

Thermal Durability: The rigid element supports high-limit exposure up to 256°F without degradation of internal components

Nordyne 151884R Orifice 320720-756 Veteran techs recommend ensuring theThe Nordyne 151884R Orifice is a high precision inducer pilot orifice engineered for Miller and Intertherm gas fired furnaces. This critical combustion component features a 1 5 8 inch diameter (1. 625") and is specifically designed to regulate the fuel to air mixture within the inducer assembly. Whether you are performing a seasonal tune up or troubleshooting a furnace that runs hot and trips limit switches, replacing a clogged or corroded furnace