Your Solutionfor Efficient Heating: 400-4 Automatic air vent valve Ideal for use in residential and commercial heating systems including radiators, radiant floor heating, and small heaters—compatible with most 1/8” NPT fittings, essential central boiler parts.
Reliable Air Removal: If your boiler air vent is leaking water or air, replace the automatic air vent valve promptly. This automatic air vent valve effectively vents unwanted air from hydronic systems, reducing noise and improving circulation efficiency throughout the heating system.
Premium Materials: 400-4 1/8-Inch-NPT float air hy-vent crafted from premium, durable brass material, the valve body features precision internal construction for long-lasting ventilation efficiency without easy damage. Withstands pressures up to 150 psi and temperatures up to 240°F.
Easy Maintenance: The central boiler parts must be installed vertically, typically positioned at the top. The vent cap features threads for easy removal during maintenance. After installation, first tighten the vent knob, then slightly loosen it to ensure proper venting.
Installation Recommendations: Before installing the boiler air vent, be sure to shut down the heating system for a period of time to allow the temperature and pressure within the pipes to decrease. It is recommended to wear safety goggles and gloves to ensure complete safety. During installation, apply sealing tape to the threads to enhance the seal.
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