Safety Relief Valve Afriso MSW for Domestic Hot Water Tanks 10 bar Rp3/4" x Rp1" (model 42427)

Afriso MSW safety relief valve model 42427 is designed for domestic hot water storage tanks and related piping systems. The valve opens at an overpressure set to protect tanks and installations rated up to 10 bar, relieving excess fluid to avoid damage and maintain safe operating conditions. It features a Rp3/4" inlet and Rp1" outlet connection configuration suitable for typical potable hot water installations and replacement of compatible valves in existing systems.

Advantages

The Afriso MSW relief valve provides a reliable mechanical overpressure protection solution for domestic hot water systems. Constructed for compatibility with potable water installations, it offers straightforward hydraulic discharge performance at the specified pressure rating. The valve’s standardized thread connections ensure straightforward installation or replacement within common plumbing arrangements, while the compact design minimizes space requirements on storage tanks and piping runs.

Suitable for

• Domestic hot water storage tanks and cylinders
• Boiler and hot water circulation systems requiring overpressure protection
• Replacement of existing relief valves with matching inlet/outlet connections
• Potable water installations where certified pressure relief is required

Key specifications

• Maximum operating pressure: 10 bar
• Inlet connection: Rp3/4" (female thread)
• Outlet connection: Rp1" (female thread)
• Application: Safety relief for domestic hot water systems
• Material compatibility: Suitable for potable hot water (materials designed for contact with drinking water)

How to use

Install the Afriso MSW safety relief valve on the hot water storage tank or pipeline at a location recommended by the system manufacturer, typically at or near the tank’s top or on the pressure side of the system. Ensure the inlet and outlet threads match the plumbing connections and apply an appropriate sealing method for Rp threads. Set or verify the factory-set relief pressure corresponds to the system design (10 bar rating). Provide a safe discharge path for expelled fluid to a suitable drain or safe location according to local regulations.

Usage recommendations

Inspect the valve periodically for signs of corrosion, blockage, or leakage. Test operation during scheduled maintenance by following local codes and manufacturer guidance. Replace the valve if it shows impaired operation, persistent leakage, or physical damage. Ensure installation complies with applicable plumbing and building regulations and use certified components where required.