Controllable check valve - 5/4" FF IVAR.CIM 33CREA

Product detailed description

This controllable check valve is commonly used in residential and commercial heating and plumbing systems where precise control over fluid direction is required. It is typically found in pump circuits, circulation systems, and pressurised water supply lines. Installers and service technicians working in HVAC or industrial pump environments will find this valve suitable for applications where backflow prevention is critical. The valve’s compact design and internal threading allow for straightforward integration into existing pipe layouts.

The valve is particularly useful in systems where periodic inspection or servicing is necessary. The inspection port enables access to internal components without dismantling the entire pipeline. This makes it ideal for installations requiring regular maintenance checks or adjustments. The valve supports both vertical and horizontal mounting and is compatible with standard copper or steel piping configurations.

Technical parameters

Material	Brass CW602N-M
Operating temperature	-10 °C
Nominal pressure	PN 16
Code	CIM33CREA032
Brand	IVAR

The nominal pressure rating of PN 16 indicates that the valve is designed to handle up to 16 bar of operating pressure. This makes it suitable for medium-pressure systems such as those found in central heating or pump circulation loops. The operating temperature range from -10°C to +95°C allows for use in both cold and hot water applications. These parameters are essential for correct sizing and selection based on the system’s hydraulic conditions and thermal requirements.Installation and connection The valve is equipped with internal female threading (FF), which connects directly to male-threaded pipe fittings. During installation, ensure that the thread type and size match the system components. Apply a suitable sealing compound or PTFE tape to the threads to prevent leaks. The valve should be installed in the correct orientation, with the flow direction indicated on the body. A common mistake is reversing the direction, which can lead to improper sealing or valve failure. Check that the surrounding piping is free from debris before fitting the valve. After installation, perform a pressure test at a level below the nominal pressure to verify the integrity of the connection. Avoid over-tightening the threaded joints to prevent damage to the valve body or sealing surfaces. Ensure that the inspection port is accessible for future maintenance tasks.

Compatibility and accessories

This valve is compatible with standard copper, steel, and stainless steel piping systems. It works well in conjunction with centrifugal pumps and circulation pumps. For installations requiring additional protection, consider using strainers or filters upstream of the valve to prevent particulate matter from entering the system. No specific accessories are required for basic installation, but sealing compounds or thread sealants are recommended for ensuring leak-free connections.

Technical background for designers

The operating principle of this check valve involves a plastic disc that opens under forward flow and closes automatically when flow stops or reverses. The disc is held in place by a spring mechanism that allows for manual adjustment via the inspection port. This feature enables partial or complete closure during maintenance, making it more versatile than standard non-return valves. The body material, brass CW602N-M, offers good corrosion resistance and mechanical strength, suitable for both hot and cold water. The plastic disc ensures low friction and smooth operation. The valve is designed to integrate seamlessly into closed-loop systems and is compliant with EN 1717 standards for safety and performance. The service life and efficiency depend on the operating conditions, including the frequency of flow reversal and the presence of abrasive particles in the fluid.

Service and operation

Regular visual inspections are recommended to ensure the valve remains free from blockages or signs of wear. The inspection port allows for checking the condition of the disc and seating surfaces without removing the valve from the system. Clean any visible debris from the internal components using a soft brush and clean water. Reassemble the valve carefully to maintain the integrity of the sealing surfaces. If the valve shows signs of leakage or fails to close properly, disassemble it and inspect for damage or deformation. Replace the disc or other worn parts if necessary. Always follow the manufacturer’s guidelines for reassembly and testing after servicing. There are no fixed service intervals specified in the technical documentation, so maintenance should be performed based on observed performance or system requirements.

Frequently asked questions

Can the inspection port be used for partial closure of the valve?
Yes, the inspection port allows for manual adjustment of the disc position, enabling partial closure of the valve during maintenance or system balancing.

Is this valve suitable for installation in a vertical piping run?
Yes, the valve can be installed in either vertical or horizontal orientations. Ensure the flow direction is correctly aligned with the arrow on the valve body.

What type of sealing compound is recommended for the threaded connection?
A PTFE-based thread sealant or a high-quality sealing compound suitable for brass fittings is recommended to ensure a leak-free connection.

Does the valve require any special tools for disassembly?
No, standard hand tools such as wrenches and screwdrivers are sufficient for disassembling and reassembling the valve for inspection or maintenance purposes.