Xylem-Hoffman Specialty 401458 Steam Vent 1/4" 6 PSI Max 43

​The Xylem-Hoffman Specialty 401458 Steam Vent, Model 43 used as a non-vacuum air valve that operates in small steam heating systems. The 1/4" NPT straight shank combined with a single nonadjustable port allows this device to efficiently release trapped air for optimal system performance. The telescopic siphon tube equipped with an angled cut design enables proper water drainage to avoid accumulation. This Steam Vent Model 43 operates optimally at 6 psig maximum pressure and high capacity while serving residential and light commercial steam radiators.