Castel – 3030/44C290 – 29 bar Safety Relief Valve, ½″ NPT Inlet × ¾″ G Outlet

The Castel 3030/44C290 is a pressure relief valve specifically designed for refrigeration, air conditioning, and HVAC systems. It provides reliable over‑pressure protection, set to open at 29 bar, and features standard ½″ NPT inlet and ¾″ G outlet fittings for versatile installation.

Key Features:

• Manufacturer: Castel

• Model / P/N: 3030/44C290

• Type: Safety/release valve for refrigeration systems  

• Set Opening Pressure: 29 bar

• Maximum Operating Pressure: Up to 55 bar  

• Temperature Range: –50 °C to +150 °C  

• Connections:

  • Inlet: ½″ NPT male (screw)

  • Outlet: ¾″ G (BSP)  

• Application: Ideal for refrigerant circuits, chillers, heat pumps, and AC systems