Marketing InformationThe Spirovent® air eliminators, using our patented spirotube coalescing medium, "scrub" the air from the system fluid and allows it to break-free in a low velocity, low turbulence removal chamber. Simple to install with a straight in line full flow design it is available in VJP junior Series for residential and light commercial applications from 3/4 to 2 in pipe size. Solid brass construction, integral patented air release mechanism and a 20 Year limited warranty. Models are available in NPT (VJR), sweat (VJS), press-fit (VJP), horizontal (VJR / VJS / VJP) and vertical (VJV) configurations. Standard models rated for 150 psi and 270 deg F and solar (HT) models to 360 deg F.