Automatic air vent valve 1/2" with non-return valve, chrome

Product detailed description

In central heating systems, air accumulation can reduce efficiency and cause uneven heat distribution. This automatic air vent valve is commonly installed on radiators or manifolds in residential and commercial buildings. It ensures continuous air removal without requiring manual intervention. The non-return valve prevents water loss once air is expelled, maintaining system integrity and reducing the need for frequent checks.

The valve is typically mounted at the highest point of the radiator or manifold to allow effective air release. It operates silently and reliably under normal working conditions, making it a standard component in modern central heating installations. Installers must ensure the valve is correctly oriented and positioned to avoid operational issues during system commissioning.

Technical parameters

Type	Automatic air vent valve with check valve
Connection	1/2 inch
Material	Nickel-plated brass, surface chrome
Max pressure	10 bar
Max temperature	120°C
Dimensions	29 x 95 mm
Certification	Declaration of conformity
EAN	5900238565058
Code	ODP.A15CH
Brand	Hydroland

The valve is rated for a maximum operating pressure of 10 bar and a maximum temperature of 120°C, which makes it suitable for most central heating applications. These values are essential for determining correct sizing and ensuring compatibility with the system’s hydraulic and thermal conditions. The 1/2 inch connection is standard for radiators and manifolds in central heating systems, and the chrome finish provides corrosion resistance and durability in wet environments.

Installation and connection

To install the valve, ensure the system is depressurised and the radiator or manifold is clean and dry. Use a suitable wrench to tighten the valve securely onto the 1/2 inch threaded port. The valve should be oriented vertically with the air vent facing upwards to allow unimpeded air flow. Check that the sealing washer is intact and properly seated to prevent leaks. Common installation errors include incorrect orientation, insufficient tightening, or using the wrong thread type. Always verify the system pressure and temperature limits before commissioning.

Compatibility and accessories

This valve is compatible with standard central heating systems using hot and cold water. It is commonly used with radiators, manifolds, and underfloor heating circuits. No additional accessories are required for basic installation, although a sealing washer may need to be replaced during maintenance. Ensure the system components are compatible with the valve’s maximum operating pressure and temperature limits. Related products include other air vent valves and check valves designed for similar applications.

Technical background for designers

The valve operates by allowing air to escape through a small orifice while the internal check valve remains closed. When air accumulates, it rises to the top of the valve and is released through the vent. The check valve opens only when air is present and closes automatically when the system is filled with water, preventing water loss. The body is made of nickel-plated brass with a chrome surface, offering good resistance to corrosion and mechanical wear. The design ensures minimal pressure drop and long-term reliability in heating systems. System efficiency depends on correct placement and regular inspection to ensure unobstructed air flow.

Service and operation

Regular visual inspections are recommended to check for signs of leakage, blockage, or corrosion. The valve does not require scheduled servicing unless performance issues arise. If air is not being vented effectively, check for blockages in the orifice or damage to the internal components. In such cases, disassemble the valve and clean or replace the affected parts. Always refer to the technical documentation for specific guidance on maintenance procedures.

Frequently asked questions

Can this valve be used with a central heating manifold?
Yes, it is suitable for installation on manifolds as well as individual radiators, provided the connection size matches the system requirements.

Does the valve require a separate check valve to be installed externally?
No, the non-return function is integrated within the valve itself, eliminating the need for an external check valve.

Is the valve suitable for use with condensing boilers?
It is compatible with central heating systems using hot and cold water, including those connected to condensing boilers, as long as the operating conditions remain within the specified limits.

Can the valve be used in a vertical pipe section?
Yes, but it must be mounted with the air vent facing upwards to allow proper air release and prevent water from entering the vent chamber.