Key features

• •【Automatic Air Release for Better Efficiency】The 400-4 Float Air Vent automatically removes trapped air from hydronic systems, preventing airlocks and ensuring smooth water circulation. Improves heating efficiency, reduces energy consumption, and helps maintain even heat distribution throughout your system.
• •【Durable Solid Brass Construction】Made from premium material for superior corrosion resistance and long-lasting durability. Withstands high temperatures and harsh environments without rusting, making it a dependable choice for both residential and commercial heating systems.
• •【Compact Design for Tight Spaces】Features a 1/8" NPT connection and a short, space-saving body ideal for installation in confined areas such as boiler rooms, pipe chases, and radiator manifolds without interfering with surrounding components.
• •【Wide Compatibility & Easy Installation】Suitable for closed-loop hot water systems, boilers, radiators, underfloor heating, and solar hot water applications. Works for both new installations and system upgrades, with a quick and straightforward setup.
• •【Satisfaction Guarantee】We are dedicated to delivering professional and heartfelt service to enhance your shopping experience. If you're not completely satisfied with your purchase, simply return it within 30 days. Additionally, we offer a 12-month warranty for your peace of mind.