parallel circuit regulator

technicians should verify the integrity of the limit switches

replacing the entire harness is the standard practice for long-term reliability

CS models)

How do I verify if this valve meets my boiler's code requirements

Lennox 10W77 Expansion Valve 323080-701 parallel circuit regulatorThe Lennox 10W77 Expansion Valve is a critical OEM R 22 expansion valve designed for precise refrigerant metering in residential and commercial cooling systems. This thermostatic expansion valve (TXV) includes an internal check valve, making it a direct replacement for heat pump applications and air conditioning units. Engineered by Parker for Lennox, the 10W77 regulates flow based on evaporator load to prevent slugging and optimize superheat levels.