Automatic Drain Valve - 1/2" IVAR.ADV 850

Product detailed description

The IVAR ADV 850 automatic drain valve is commonly used in residential and commercial heating systems, as well as in plumbing and irrigation installations where pressure regulation is required. It is typically installed in systems where excess pressure needs to be released automatically to prevent damage to components and ensure safe operation. The valve is suitable for use in closed-loop systems and is often found in boiler rooms, pump stations, and domestic hot water systems.

Its compact design and integrated pressure gauge make it ideal for applications where monitoring system pressure is essential. The valve is frequently used in conjunction with expansion vessels and circulation pumps, ensuring stable pressure levels and preventing over-pressurisation. The inclusion of a filter and check valve helps to maintain system cleanliness and prevent backflow.

Technical parameters

Material	Brass CW617N
Operating temperature	+40 °C
Nominal pressure	PN 10
EAN	0020061400001
Weight	0.584 kg
Code	I00200614
Brand	IVAR

The operating temperature of +40°C and PN 10 rating make this valve suitable for low-pressure systems. The pressure range of 0.3 to 4 bar is important for ensuring the valve functions correctly within the expected system conditions. The maximum flow rate of 1.8 m³/h must be considered when sizing the valve for larger installations or where high flow is expected.Installation and connection The valve is installed using a 1/2 inch connection, typically with a threaded fitting. Before installation, ensure the system is depressurised and the valve is compatible with the system’s media and pressure range. The valve should be mounted in a vertical position to allow proper drainage and prevent air entrapment. Check that the filter is clean and the pressure gauge is correctly aligned for accurate readings. Common installation errors include incorrect orientation, failure to clean the filter, and improper tightening of the connections, which can lead to leaks or reduced performance.Compatibility and accessories The IVAR ADV 850 is compatible with standard plumbing and heating systems operating within its pressure and temperature limits. It is often used with expansion vessels, circulation pumps, and pressure-reducing valves. Additional components such as unions or isolation valves may be required for easier maintenance and system isolation. No specific accessories are listed for this model, but standard plumbing fittings should be used to ensure a secure and leak-free installation.Technical background for designers The valve operates by releasing excess pressure when the set threshold is exceeded. The internal pressure-reducing valve and check valve work together to maintain a stable pressure within the system. The CW617N brass construction provides good corrosion resistance and durability in water-based systems. The material’s properties ensure long-term reliability and minimal maintenance. The valve’s performance is influenced by the system’s operating conditions, including water quality and temperature. Proper integration into the system layout is essential to avoid pressure fluctuations and ensure efficient operation.Service and operation Regular inspection of the filter and pressure gauge is recommended to ensure the valve continues to function correctly. The filter should be cleaned if it becomes clogged with debris, which can restrict flow and affect pressure regulation. The pressure gauge should be checked for accuracy and replaced if it shows signs of wear or inaccuracy. No specific service intervals are provided, but routine maintenance is advised to maintain system performance and prevent unexpected failures.Frequently asked questions

Can the IVAR ADV 850 be used in open-loop systems?
It is primarily designed for closed-loop systems. Use in open-loop systems may require additional components to manage pressure and flow effectively.

Is the pressure gauge included in the valve assembly?
Yes, the pressure gauge is an integral part of the valve and is used to monitor system pressure during operation.

Can the filter be replaced separately?
The filter is part of the valve assembly and is not available as a separate replacement part. The entire unit must be replaced if the filter becomes damaged or excessively clogged.

What is the maximum allowable temperature for the valve?
The valve is rated for operation at up to +40°C. Exceeding this temperature may affect its performance and longevity.