Safety Relief Valve Afriso AED 42376 DN15, 1.5 bar, connection 1/2" x 3/4"

Afriso Safety Relief Valve AED 42376 DN15, set to 1.5 bar with a 1/2" x 3/4" connection, is a compact pressure relief device for closed heating and domestic hot-water systems. The valve opens at the preset pressure to safely discharge excess fluid and prevent overpressure in boilers, heat generators and connecting piping. Its DN15 size makes it suitable for residential and light commercial installations where straightforward overpressure protection is required.

Advantages

The valve provides reliable overpressure protection through a factory-set opening pressure of 1.5 bar, reducing the risk of damage to system components. Its compact DN15 design and standard threaded 1/2" x 3/4" connection simplify replacement and integration into existing installations. The device is designed for continuous service in closed heating and domestic hot-water systems and enables predictable and safe pressure relief when required.

Suitable for

• Domestic boilers and heat generators
• Closed central heating systems in residential buildings
• Domestic hot-water systems and storage cylinders
• Piping and manifolds requiring pressure relief in small installations

Key specifications

• Nominal diameter: DN15
• Set opening pressure: 1.5 bar
• Connection type: threaded 1/2" x 3/4"
• Application: closed heating and domestic hot-water systems
• Function: automatic pressure relief at preset pressure

How to use

Install the safety relief valve on the pressure side of the boiler, heat generator or piping according to the system designer's instructions and local regulations. Ensure the valve is mounted vertically where possible and connected to an appropriate discharge pipe or safety drain to direct released fluid safely away. Verify the valve and its connections for leaks after installation and perform routine visual inspections as part of system maintenance. Do not alter the factory-set opening pressure; if a different set point is required, consult a qualified service technician or the manufacturer.

Usage recommendations

Use the valve only in closed heating and domestic hot-water systems with compatible operating fluids and temperatures. Regularly inspect the valve and discharge line for corrosion, blockages or damage and replace the device if it shows signs of wear or malfunction. Follow local codes and the system manufacturer's guidance when integrating the valve into existing installations.