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    Home < Auto Air Vents, Pressure Relief & Safety Valves

    Auto Air Vents, Pressure Relief & Safety Valves

    Auto air vents, pressure relief valves, and safety valves are vital components in any heating system, ensuring safe and efficient operation by managing pressure and air buildup. These parts work together to protect your boiler from over-pressurisation, airlocks, and potential damage, maintaining optimal performance and extending the system’s lifespan. Whether you’re replacing worn-out components or upgrading your system, here at National Boiler Spares, our range of high-quality valves and vents ensures safety and reliability.  

    Worn-out or malfunctioning valves and vents can lead to dangerous and costly problems in your heating system. Common signs that these components may need replacement include:  

    • Inconsistent Pressure Levels  
    • Water Leaks  
    • Noisy or cold radiators  
    • Boiler lockouts  

    Replacing faulty components promptly ensures the safety, efficiency, and longevity of your boiler system.  

    Shop our range now including the Alpha 3 bar pressure relief valve, the Alpha Boiler Auto Air Vent, and many more.   

    Safety Valves – FAQs  

    What is a safety valve in a boiler?  

    A safety valve is a safety device that automatically releases pressure when the pressure exceeds the preset limit.   

    What are the regulations for boiler safety valves?  

    Boiler safety valves have many regulations, including the number of valves, pressure differential, overpressure, maintenance, approval, and training.   

    What is the safety valve setting of a boiler?  

    The safety valve setting depends on several factors, including at least one safety valve on the boiler must be set at or below the maximum allowable working pressure. The remaining valves can be set up to 3% above the maximum.   

    How often should boiler safety valves be replaced?  

    Boiler safety valves should be replaced every three to five years.