ICMA 91241ADAC Safety Valve 1/2" 1.5 bar F/F

The ICMA 91241ADAC safety valve is a precision-engineered pressure relief device specifically designed for hydronic heating systems. This component serves as a critical safety mechanism, automatically discharging fluid when the internal system pressure exceeds the calibrated limit of 1.5 bar. Constructed from a combination of durable brass and high-quality plastic, it ensures long-term reliability and consistent performance in both residential and commercial heating applications.

Advantages

The primary benefit of this safety valve is its ability to protect heating infrastructure from damage caused by overpressure. By maintaining a strict 1.5 bar threshold, it prevents potential leaks, pipe bursts, and damage to boilers or radiators. The robust construction using brass and specialized plastic provides excellent resistance to corrosion and thermal stress, ensuring a long service life even under demanding operating conditions. Its compact design allows for easy integration into existing piping systems, while the female/female connection ensures a secure and leak-proof installation.

Suitable for

• Residential heating systems
• Commercial hydronic installations
• Boiler protection circuits
• Closed-loop heating networks

When it may not be suitable

This valve is not suitable for systems requiring a pressure relief threshold other than 1.5 bar, as the setting is fixed and cannot be adjusted. It should not be used in high-pressure steam systems or industrial applications where the operating temperature exceeds 110°C or falls below -10°C.

Key specifications

• Connection size: 1/2 inch female/female
• Pressure setting: 1.5 bar
• Operating temperature range: -10°C to 110°C
• Materials: Brass and plastic

How to use

The valve should be installed at the highest point of the heating system or directly on the boiler outlet to ensure it can effectively monitor and relieve pressure. Ensure that the discharge port is connected to a drain or a safe collection point to prevent fluid from spraying in the event of activation. The installation should be performed by a qualified professional to ensure all connections are tightened correctly and the system is properly sealed.

What to consider before purchase

• Verify that your system requires a 1.5 bar relief pressure
• Check that your piping matches the 1/2 inch female connection
• Ensure the installation environment stays within the -10°C to 110°C temperature range

Usage recommendations

Regularly inspect the valve for signs of leakage or mineral buildup to ensure it remains operational. It is recommended to have a professional check the valve during annual heating system maintenance to verify that the pressure relief mechanism functions correctly.