Armstrong offers thermostatic air vents for positive venting of air and other non-condensable gases from steam in chamber-type heat-transfer equipment. Typical applications include jacketed kettles, retorts, vulcanizers, jacketed sterilizers or other contained equipment where air could accumulate in remote areas of the steam chamber and reduce heat-transfer capacity. These vents are balanced pressure air vents that respond to the pressure-temperature curve of steam. Air is automatically vented at slightly below steam temperature throughout the entire operating pressure range.

• Suitable for pressures from 0 – 300 psig
• All 304-L stainless steel bodies—sealed, tamperproof
• Balanced-pressure thermostatic element vents air at slightly below steam temperature over the entire pressure range—no adjustments required
• Dependable, proven phosphor-bronze bellows caged in stainless steel with bronze valve and stainless steel seat. Available in straight-thru or right-angle connections

Armstrong thermostatic air vents should be installed at the highest point on a steam chamber, with the air vent located above the chamber. This will minimize the possibility of any liquid carryover, and air can be vented at atmosphere without a drain line.