Armstrong Stainless Steel Thermostatic Air Vent for Steam TTF-1
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, tamper-proof
• 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.
Steam chamber such as steam jacketed kettle is empty during start-up
With a thermostatic air vent installed at the highest point of the steam jacket
The air vent will relieve all the air inside the jacket during start-up
If there is no air vent installed, air will be mixed with the steam coming into the jacket
The air become heat insulator
And the steam temperature will drop
Resulted the heating become in-efficient.
PLEASE WATCH VIDEO OF WHY WE HAVE TO GET RID AIR FROM A STEAM SYSTEM HERE !