Optimized Energy Efficiency: Intermittent pilot operation eliminates continuous pilot flame

ODF stands for Outside Diameter Female

Whether you are performing routine preventative maintenance or addressing a solenoid rebuild for model 310-422

The WHL1278 fits many Trane and American Standard air handlers

A.J. Antunes JD-2-PURPLE Pressure Switch 318172-701 Optimized Energy Efficiency: Intermittent pilotThe A. J. Antunes JD 2 PURPLE Pressure Switch is a high precision, industrial differential vacuum and air pressure switch engineered for sensitive monitoring in HVAC and combustion safety systems. This OEM air proving switch features a specialized purple spring calibration, supporting an adjustable set point range from 0. 1 to 10 inches water column (W. C.). Designed with a single pole double throw (SPDT) snap action switch, it provides reliable auto