Caleffi Automatic Filling Valve, Pre-Adjustable, 1/2"Outside NPT Inlet x 1/2" Inside NPT Outlet 553642A

A Caleffi 553642A Automatic Filling Valve maintains proper system pressure with a pre-settable design that streamlines makeup water control for reliable operation across the HVAC loop.

• Optimized for performance, real OEM regulators deliver exact tolerances and thread alignment that match factory specs, helping achieve a precise fit without leaks or rework
• Product Type: Automatic Filling Valve
• Features: Pre-Adjustable
• Connection Type: 1/2" NPT Outside Inlet X 1/2" NPT Inside Outlet