Carrier 330819-401 Service Valve 318973-401 the Watts 740 series offers

the Watts 740 series offers a tactical advantage with its "above-drain" seat design

Field Adjustability: Features accessible pressure taps for verifying inlet and outlet gas pressure

you need a valve that won't fail under pressure

The external equalizer compensates for pressure drops across the evaporator

Carrier 330819-401 Service Valve 318973-401 the Watts 740 series offersThe Carrier 330819 401 is a genuine OEM Liquid Line Service Valve designed for HVAC refrigeration systems requiring a 3 8 inch connection. Engineered for Carrier, Bryant, and Payne residential and commercial units, this brass body valve facilitates critical maintenance by allowing technicians to isolate the refrigerant charge within the condenser during system evacuations or part replacements. Its robust construction ensures a reliable, leak proof