Automatic Air Vent FERRO 1/2" with Shut-off Valve MPN 015AS2

Automatic Air Vent FERRO 1/2" with Shut-off Valve is a compact device designed to remove trapped air from closed water and heating systems. The model includes an integrated shut-off valve that allows isolation for maintenance without system draining. Its 1/2" threaded connection fits standard radiator, boiler and manifold fittings, enabling continuous automatic venting to improve circulation, reduce noise and limit corrosion caused by air accumulation.

Advantages

The automatic vent operates without external power and releases air continuously as it accumulates, helping maintain stable hydraulic performance. The integrated shut-off valve simplifies installation and service by enabling safe isolation of the unit. The compact brass/plated body and reliable float mechanism ensure long service life in residential and light-commercial heating circuits. Low-profile design makes it suitable for tight installation spaces.

Suitable for

• Domestic and small commercial radiator systems
• Hot water boilers and combi boilers
• Manifolds and underfloor heating circuits
• Closed-loop hydronic systems where manual venting is difficult

Key specifications

• Thread size: 1/2" (standard pipe thread)
• Function: Automatic air vent with integrated shut-off valve
• Material: corrosion-resistant metal body with internal float mechanism
• Application: closed water and heating systems
• Installation orientation: vertical mounting recommended for optimal operation

How to use

Install the automatic air vent on a high point of the heating or water system where air naturally accumulates. Ensure the unit is mounted vertically so the float mechanism can operate correctly. Before installation, close the integrated shut-off valve, connect the 1/2" thread to the system fitting using appropriate sealing material, then open the valve to allow automatic venting. During normal operation the device will expel trapped air continuously; if servicing is required, close the shut-off valve first to isolate the vent.

Usage recommendations

Check the vent periodically for leaks and proper operation, and ensure the surrounding temperature stays within the system manufacturer’s recommendations. When installing on manifolds or radiators, position the vent at the highest accessible point and use compatible fittings to avoid stress on threads. If the system contains aggressive water chemistry, select compatible materials and follow routine water treatment to reduce corrosion risk.