What does a 'step opening' valve do

Operating at 460V with a power rating of 1/3 HP

High MOPD: Engineered to operate reliably under high Maximum Operating Pressure Differential conditions

this model features automatic recycle (automatic reset)

Lennox 17W83 Service Valve 321042-401 What does a 'step opening'The Lennox 17W83 Service Valve is a 3 4" suction line service valve designed for demanding HVACR applications. As a direct OEM replacement for Lennox 10W33, this component ensures critical system integrity during maintenance and refrigerant recovery. It features a robust brass body with high grade internal seals to prevent refrigerant leaks at the suction line interface. When installing this HVAC service valve, technicians must verify the angle of the