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542 – Nabic Safety Relief Valve

The Nabic 542 safety valve is an extremely versatile valve, suitable for use on hot water, steam or air. Although designed primarily for protection of hot water boilers, it’s wide range of applications make it an ideal general purpose safety valve. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Standard Capacity • Side Discharge • Lifting Lever
Size & Connections
15mm (1/2″) to 80mm (3″) BSP Female
Air • Oil • Inert Gasses • Steam • Water
Bronze Body • PTFE Seat Seal (Viton option)
Set Pressure Range
0.55 to 10.5 bar (dependent on size)
 -20°C to 195°C
Compliance & Approvals
BS6759 • BSEN ISO 4126 • WRAS (1 bar and above)
Buy 542 – Nabic Safety Relief Valve542 – Nabic Safety Relief Valve - PDF DatasheetCertificated to BS6759 StandardsWRAS Approved Product (EPDM Trim only)Nabic Valves

542 - Nabic Safety Relief Valve