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
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.
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.
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.
The AE30 series automatically removes air from hot- and cold-water liquid systems. View models and connections, pressure/temperature limits, free air capacity, installation, commissioning, maintenance, spares and ordering information.
AVC32 is a Spirax Sarco carbon steel balanced-pressure thermostatic air vent for steam systems, fitted with an integral flat strainer screen. Pressure-bearing components are made by TÜV-approved suppliers to AD-Merkblatt WO/TRD100, making it suitable for higher-pressure steam mains and equipment high points where air and other non-condensable gases need to be removed.
Spirax Sarco AE14 is a maintainable SG iron float-operated automatic air vent with a Viton valve head for removing air and gases from compatible liquid systems.
AV13 selection is normally a model-specific air removal decision, with pressure, connection size and installation position checked before ordering.
Return to air vents and air eliminators when AV13 needs to be compared with other steam, liquid-system or clean-steam venting routes.
Use the wider pipeline ancillaries range when air removal is part of a broader line-protection decision involving separation, strainers, check valves or instrumentation.
Review air-venting guidance when warm-up time, air pockets, vent position or steam-space geometry still need to be confirmed.
