ICMA 91241ADAF Safety Valve 1/2 inch 3 bar F/F

The ICMA 91241ADAF safety valve is a precision-engineered pressure relief component specifically designed for closed-loop heating systems. This device serves as a critical safety mechanism, automatically discharging fluid when the internal pressure exceeds the calibrated limit of 3 bar. Constructed with a robust combination of brass and high-grade plastic, it provides long-term reliability and protection against overpressure incidents in both residential and commercial hydronic installations.

Advantages

This safety valve offers exceptional durability due to its high-quality brass construction, which resists corrosion and mechanical stress over time. Its fixed pressure setting ensures consistent performance without the need for manual calibration, providing peace of mind for system operators. The compact design allows for easy installation in tight spaces, while the wide operating temperature range ensures compatibility with various heating media and environmental conditions.

Suitable for

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

This valve is not suitable for steam systems or high-pressure industrial applications where the operating pressure exceeds 3 bar. It should not be used in systems where the fluid composition is chemically incompatible with brass or the internal plastic components.

Key specifications

• Connection type: 1/2 inch female-to-female
• Pressure rating: 3 bar
• Operating temperature range: -10°C to 110°C
• Materials: Brass and plastic

The valve should be installed by a qualified professional in a vertical or horizontal position, ensuring that the discharge outlet is directed safely away from electrical components or areas where escaping fluid could cause damage. It is essential to ensure that the discharge pipe is not restricted and that the valve remains accessible for periodic inspection and testing.

What to consider before purchase

• Verify that the 3 bar pressure rating matches your system requirements
• Ensure the 1/2 inch female connection is compatible with your existing piping
• Check that the operating temperature of your system falls within the -10°C to 110°C range

Regularly inspect the valve for signs of leakage or mineral buildup to ensure it remains operational. It is recommended to perform a manual test of the relief mechanism periodically to confirm it is not seized.