Hoffman™ Radiator steam vents have a non-vacuum air valve with a float type vent. 1/8” NPT angle connection. Model 1A includes an adjustable port for true proportional venting with 6 port settings. Maximum operating pressure of 1-1/2 psig. Model 40 has a single, non-adjustable vent that is used with ordinary one-pipe systems that do not require proportional venting. Offers a maximum operating pressure of 6 psig.
Radiator Steam Vents Click on a model number to view additional specifications, photo galleries and accessories. Click on an underlined title to change sort order.