this kit resolves common head pressure issues and discharge valve leakage that can lead to system cycling or capacity loss

provided the correct orifice sizes are utilized within the furnace manifold system

Utilizing OEM McDonnell & Miller parts like the SWA-42S ensures seamless integration with existing housing and bellows assemblies for long-term system reliability

preventing costly refrigerant loss and ensuring the pilot-operated mechanism functions without pressure bypass

As a veteran contractor

Schneider Electric (Barber Colman) PNV-202 Diaphragm 320720-756 this kit resolves common headWhen you are maintaining pneumatic systems, the Schneider Electric (Barber Colman) PNV 202 Diaphragm is the industry standard for ensuring consistent pressure regulation and structural integrity. This 9 inch neoprene diaphragm is engineered specifically for use in high demand pneumatic valve actuators, providing the critical seal required for proportional control in commercial HVACR applications. As a veteran technician knows, the PNV 202 is the