Safety Relief Valve Afriso MSW for Domestic Hot Water Tanks 10 bar, connections R1/2" x R3/4"

The Afriso MSW safety relief valve for domestic hot water tanks is designed to protect potable water storage systems by releasing excess pressure at a preset value of 10 bar. Constructed with a corrosion-resistant body and a spring-loaded mechanism, the valve provides reliable overpressure protection for boilers, hot water tanks and associated pipework. Threaded connections R1/2" and R3/4" allow straightforward installation to typical inlet and outlet fittings without additional adaptors when compatible plumbing is used.

Advantages

The valve offers a compact, durable design with materials suitable for contact with potable water and a calibrated spring mechanism set to operate at 10 bar. Corrosion resistance extends service life in domestic hot water environments, while the threaded R1/2" and R3/4" connections ensure firm mechanical and hydraulic connection to standard tank fittings. The mechanical overpressure release operates without electrical power, providing passive safety under fault conditions.

Suitable for

• Domestic hot water storage tanks and indirect hot water cylinders
• Domestic boiler safety and pressure relief on potable water circuits
• HVAC and plumbing systems requiring a 10 bar overpressure protection
• Retrofit or replacement installations with compatible threaded connections

Key specifications

• Maximum set pressure: 10 bar
• Connection types: threaded inlet and outlet R1/2" and R3/4"
• Operating principle: spring-loaded mechanical relief
• Material characteristics: corrosion-resistant body suitable for potable water use
• Application temperature: suitable for typical domestic hot water temperatures (follow system limits)

How to use

Install the Afriso MSW safety relief valve on the designated pressure take-off or safety port of the hot water tank, observing the orientation and thread sizes R1/2" and R3/4" for inlet and outlet connections. Ensure all joints are sealed with compatible sealing material and tightened to the manufacturer’s recommended torque for the tank fittings. After installation, pressurize the system gradually and check for leaks and correct operation. Do not exceed the valve’s rated temperature and pressure limits; if the valve discharges frequently, investigate the system for sources of overpressure or thermal expansion and address the root cause.

Usage recommendations

Regularly inspect the valve and adjacent pipework for corrosion, deposits or leakage, and test system pressure periodically. Replace the valve if signs of wear, persistent leakage, or unreliable discharge behaviour occur. Follow local plumbing codes and the tank manufacturer’s instructions when installing and maintaining overpressure protection components.