helping contractors restore factory-spec BTU output and clean burner ignition

Operational Reliability: Minimizes mechanical drag on the drive motor

It is specifically designed for the B series filter and regulator integral units

This is the official replacement blower wheel for the older LA21AB400 model

Rated at a robust 115

Conbraco AGD4A1 Air Gap Drain 319825-402 helping contractors restore factory-spec BTUThe Conbraco AGD4A1 Air Gap Drain is a specialized plumbing component designed specifically for 1 2" to 1" Apollo RP4A series reduced pressure zone backflow preventers. This RP4A air gap drain serves the critical function of collecting minor nuisance discharges from the relief valve, preventing localized flooding while maintaining the required atmospheric break. Engineered from high impact materials, the AGD4A1 ensures that the RPZ valve drainage