The 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 the VJR, VJS and VJV Junior Series for residential and light commercial applications from 3/4 ft 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), horizontal (VJR / VJS) and vertical (VJV) configurations. Standard models rated for 150 psig and 270 deg F and solar (HT) models to 360 deg F.