The Armstrong 11AV Series stainless steel air vent 3/4" NPT has a bottom inlet and a 1/2" NPT top outlet. The 11AV Series is good for air/gas venting up to 400lbs, and uses a positive closing free floating lever to insure leaktight closing. The 11AV Series has a inlet to outlet dimension of 7-1/4" face to face from bottom to top ,a width of 2-3/4", and a weight of 1-3/4lbs.
Armstrong is a global company, spanning five generations of family ownership, which manufactures and sells intelligent system solutions for steam, air, and hot water applications across dozens of industry categories such as health care, education, industrial manufacturing, and more. Armstrong offers steam trapping and steam tracing equipment, steam system testing and monitoring products, pressure and temperature controls, water temperature controls, water heating products, hot water process controls, heating and cooling coils, strainers, radiator products, air/gas vents, and more. Armstrong is committed to sustaining the needs of future generations by conserving and saving energy and implements this throughout its product line.