Key Benefits for Your HVAC System Optimized Airflow Distribution: Engineered to drive blower wheels at precise speeds for consistent industrial heating

Simplifies complex installations

In most configurations

the 42J03 is mounted on the furnace plenum or the blower deck to monitor air temperatures directly coming off the heat exchanger

this part is the manufacturer-designated replacement and is technically identical to the PRS30009

Spence Engineering D320 Pilot Els PW 17895 Key Benefits for Your HVACThe Spence Engineering D320 Pilot is a cast iron, spring actuated pressure reducing pilot designed for precise steam pressure regulation in industrial boiler systems. Engineered to work in tandem with a Spence Main Valve (such as the Type E or Type C), this pressure pilot valve handles a delivery range of 3 to 20 PSI, making it ideal for low pressure steam heating and process applications. The D Pilot 3 20# Spring Rg CI features a rugged construction