Lennox 34M74 Pressure Switch Els PW 17895 technicians can prevent premature bearing

technicians can prevent premature bearing wear caused by improper housing clearance or excessive oscillation

non-serviceable valve designed for long-term reliability

you can use a longer lead as long as the excess copper tubing is carefully coiled away from the flame and high-heat zones

or a "clicking" sound from the compressor

The Sporlan QC-1 features a replaceable design that allows for rapid field service without de-brazing the entire valve body from the liquid line

Lennox 34M74 Pressure Switch Els PW 17895 technicians can prevent premature bearingThe Lennox 34M74 Pressure Switch is a critical safety component engineered for precision monitoring of combustion air in residential and commercial HVAC systems. This OEM Lennox replacement part features a single pole, single throw (SPST) electrical configuration, meticulously calibrated to an actuation point of . 33" WC (inches water column). Designed with a standard 1 4" barb connection, it ensures a secure, leak proof interface with the inducer