Automatic air vents are used in the closed circuits of solar heating systems. They allow air contained
in the fluid to be released automatically during the filling process, through a valve operated by a float
in contact with fluid in the system.
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.