Safety Relief Valve Afriso 42425 DN20, 6.0 bar, AED MSW 3/4x1"

Afriso safety relief valve 42425 DN20, set to 6.0 bar, is designed to protect piping and equipment by releasing excess fluid or steam when system pressure exceeds the set value. Built in the AED MSW design with 3/4x1" threaded connections, this valve provides a compact pressure-relief solution for heating, hot-water and industrial systems that require controlled overpressure protection and conformity with safety requirements.

Advantages

The valve offers precise pressure relief at the specified set pressure of 6.0 bar and is manufactured to ensure stable operation under repeated discharge cycles. Its AED MSW construction and threaded 3/4x1" connections simplify installation and replacement in existing pipework. The DN20 nominal diameter balances flow capacity and compact size, making it suitable for a range of applications without the need for extensive modification of system layouts.

Suitable for

• Closed heating systems and boiler installations
• Hot-water systems in residential and commercial buildings
• Industrial process lines requiring pressure protection up to 6.0 bar
• Retrofit and replacement projects with 3/4x1" threaded connections

Key specifications

• Nominal diameter: DN20
• Set pressure: 6.0 bar
• Design: AED MSW
• Connection type: threaded 3/4x1"
• Application: pressure relief for fluid or steam

How to use

Install the Afriso safety relief valve in the appropriate location on the pressure vessel or piping according to system design and local safety regulations, ensuring correct orientation and secure threaded connections. Verify that the set pressure of 6.0 bar matches system requirements before commissioning. After installation, perform a functional test to confirm the valve opens and re-seats properly at the specified pressure. Maintain access for inspection and periodic testing as required by operational procedures.

Usage recommendations

Use this valve where a 6.0 bar safety relief setting is appropriate and where 3/4x1" threaded connections are compatible. Follow manufacturer guidance and local codes for installation, venting of discharge, and routine testing. Ensure the valve is protected from freezing, corrosion and excessive mechanical stress to preserve reliable operation.