Taco 418-4 Hy-Vent Automatic Air Vent 1/2" X 3/4" NPT

The Taco 418-4 Hy-Vent is an essential part used to expel trapped air in hydronic heating systems for better performance and to minimize noise. This has a connection of 1/2” FNPT x 3/4” MNPT and is suitable for use on boilers, radiators and baseboard heating units. It is designed for vertical mounting in confined areas and is made of brass. The float discharges air as it builds up. It also helps in regulating the system pressure and prevents air blockage which helps in increasing the efficiency of the energy used decreasing the frequency of maintenance and increasing the life of the equipment that is an essential part of HVAC systems.