Caleffi Automatic Filling Valve, Pre-Adjustable, 1/2" Inside NPT Inlet x 1/2" Outside NPT Outlet 553542A

A Caleffi 553542A Automatic Filling Valve regulates system refill and pressure balance so the HVAC loop stays stable and protected from low-water conditions.

• Choosing real OEM valves and fittings extends service life with precise tolerances that resist wear, maintain stable flow and reduce stress on connected components over time
• Product Type: Automatic Filling Valve
• Dimensions: 1/2" Inside NPT Inlet X 1/2" Outside NPT Outlet
• Features: Pre-Adjustable