Products
AVT125

AVT125 Air Vent

The AVT125 is used on steam applications up to 125 PSIG for removal of air and non-condensable gases from process equipment, vessels and piping. The air vent should be located at a high point in the system or vessel and can be installed in any orientation.

How It Works

The thermostatic air vent contains a welded stainless steel thermal element that expands when heated and contracts when cooled. When air and non-condensable gases are present, the valve is in the open discharge position. When steam reaches the air vent, the element expands and closes the valve off tightly.

Features

  • Simple design for easy maintenance
  • All Stainless Steel Internals
  • Thermal element is the only moving part

Installation & Maintenance

Air vents should be located at a high point in the system or vessel. The air vent can be installed in any orientation. An isolation valve should be installed to facilitate repair without system shut-down. Unit is in-line repairable. Repair kits are available.

Air Vents

Air Vents are installed at the end of steam mains as well as other high points in the system. Temperature sensitive Air Vent is OPEN when cooler air is present and CLOSED when hot steam enters the system.

AVT125 series (Thermostatic Air Vents) are used on steam applications up to 125 PSIG for removal of air and non-condensable gases from process equipment, vessels and piping. The air vent contains a welded stainless steel thermal element that expands when heated and contracts when cooled. When air and non-condensable gases are present, the valve is in the open discharge position. When steam reaches the air vent, the element expands and closes the valve off tightly. The air vent should be located at the highest paint in the system or vessel.

ModelSizeTypeOrifice SizeMax PMO (psig)Max Capacity @ Max PMO (lb/hr)Weight (lbs)
AVT125-12-N1/2"NPT0.25"1251.5
AVT125-13-N3/4"NPT0.31"1251.5
Product Overview
The AVT125 is used on steam applications up to 125 PSIG for removal of air and non-condensable gases from process equipment, vessels and piping. The air vent should be located at a high point in the system or vessel and can be installed in any orientation.
Features
• Simple design for easy maintenance
• All Stainless Steel Internals
• Thermal element is the only moving part
How It Works
The thermostatic air vent contains a welded stainless steel thermal element that expands when heated and contracts when cooled. When air and non-condensable gases are present, the valve is in the open discharge position. When steam reaches the air vent, the element expands and closes the valve off tightly.
Selection / Sizing / Capacities
Dimension and Weights

Installation and Maintenance
Air vents should be located at a high point in the system or vessel. The air vent can be installed in any orientation. An isolation valve should be installed to facilitate repair without system shut-down. Unit is in-line repairable. Repair kits are available.
Sample Specification
Air vent shall have a stainless steel thermal element with forged brass construction, featuring a union nipple inlet connection. The valve and seat shall be stainless steel.