By sensing backpressure caused by a clogged trap or blocked PVC drain line

A compatible RA2000 series thermostatic operator must be purchased separately to enable automatic temperature control

the integrated Speedup Jumper terminals allow for rapid diagnostic testing

Common Questions: Is the Honeywell 23176CB compatible with all L91 controllers

Key Benefits: OEM Reliability: Ensures exact fit and performance calibration for Lennox

Trane VAL7494 Service Valve 322838-754 By sensing backpressure caused byThe Trane VAL7494 Service Valve is an essential OEM replacement component designed for high pressure industrial and commercial HVAC systems. Engineered for precision refrigerant control, this 1 1 8 12x3 8x3 4 service valve features a robust brass and stainless steel construction, ensuring long term reliability in demanding environments. This Trane HVAC replacement part is a multi position valve commonly utilized on Trane RTAC, RTHD, RTWD, and RTUD