Always match the OEM rating for the specific furnace model

The Watts 0590719 is a high-performance 1/8 inch NPT air vent designed for veteran contractors who require reliable air elimination in pressurized hydronic heating systems

it maintains identical electrical specifications and terminal configurations

This model is engineered for compatibility with RA2000 operators and high-capacity thermostatic sensors

Direct replacement for part numbers P441-1146

Maxitrol 325-5-1-12A39 Regulator Els PW 17895 Always match the OEM ratingThe Maxitrol 325 5 1 12A39 is a field proven lever acting gas regulator designed for high precision pressure management in residential, commercial, and industrial piping systems. This 1 inch NPT model is engineered to handle a 5 PSI maximum inlet pressure for natural gas and 2 PSI for LP, making it an essential component for high pressure service lines. Featuring a factory installed 12A39 vent limiter, this unit eliminates the need for vent piping to