forcing the McDonnell & Miller safety valve to vent as system pressure approaches its 30 PSI limit

Durable nickel-plated forged brass body with stainless steel trim for longevity

OEM Compatibility: Specifically engineered for use with official Goodman-Amana HVAC equipment

The Magnatrol G129S43 series is a standard in the mechanical industry for its ability to operate without a minimum differential pressure

Lennox 26K49 TXV Refrigerant forcing the McDonnell & MillerThe Lennox 26K49 Thermostatic Expansion Valve (TXV) is a critical metering component engineered specifically for 3 ton R22 refrigerant systems utilizing a B10 flowrater configuration. Designed to optimize evaporator efficiency, this internally equalized expansion valve maintains precise superheat levels across varying thermal loads, preventing liquid slugging and protecting the compressor from premature failure. As a direct OEM Lennox replacement