Spirax Sarco AV13 Steam System Air Vent
Pipeline ancillaries > Air vents
Spirax Sarco AV13 Steam System Air Vent
AV13 is a Spirax Sarco brass balanced-pressure thermostatic air vent for steam systems. It is typically considered for high points on steam mains or equipment where air and other non-condensable gases need to be removed without manual venting.
Quick facts
Where AV13 fits in the air vent range
AV13 is a model-level route inside the wider air vents and air eliminators range. It is useful when the specification already names AV13, or when a compact brass thermostatic air vent is being checked for a steam main or equipment high point.
Product facts
Available product material identifies AV13 as a maintainable balanced-pressure thermostatic air vent for discharging air and other non-condensable gases from steam systems. The documented construction includes a brass body, angle connection format, BSP or NPT threaded connections, PN16 design condition and a maximum operating pressure of 13 bar g.
The documented size range covers 3/8", 1/2" and 3/4". The current selectable commercial options on this page are focused on 1/2" and 3/4" complete-unit rows, so final replacement should confirm the installed connection and duty before ordering.
Installation and selection checks
AV13 should be considered where air can collect at the highest point of a steam main or item of equipment. The discharge should be led to a safe place, and the installation should leave enough access for future maintenance.
Before specifying AV13, confirm the connection standard, size, safe discharge route, local isolation arrangement and whether the application needs a different material or pressure class within the wider air vent range.
Continue your AV13 selection route
AV13 selection is normally a model-specific air removal decision, with pressure, connection size and installation position checked before ordering.
Compare the air vent range
Return to air vents and air eliminators when AV13 needs to be compared with other steam, liquid-system or clean-steam venting routes.
Review wider line protection
Use the wider pipeline ancillaries range when air removal is part of a broader line-protection decision involving separation, strainers, check valves or instrumentation.
Check the application principles
Review air-venting guidance when warm-up time, air pockets, vent position or steam-space geometry still need to be confirmed.