The Lennox 78L20 Valve is a professional-grade thermostatic expansion valve (TXV) designed for precision refrigerant metering in 3-ton residential and light commercial AC units

The Siemens Building Technology VMP42

Key Technical Benefits Precise Thermal Control: Adjustable 40-180°F range allows for fine-tuning based on specific hydronic system requirements

these valves should be installed in a vertical orientation at the highest point of the piping or heating unit

including furnaces from Heil

Peco Controls TA155-028 Stat 30067439-890 The Lennox 78L20 Valve isThe Peco Controls TA155 028 is a high performance fan coil thermostat engineered for precise climate control in commercial and industrial HVAC applications. This manual changeover thermostat is designed specifically for 2 pipe systems, allowing for seamless toggling between heating and cooling modes via the integrated Heat Off Cool system switch. Utilizing advanced self configuring circuitry, this unit operates across a universal voltage range of