Ball cap - with non-return valve, 1/2" FF, butterfly

Product detailed description

Ball valves with integrated check valves are commonly used in residential and commercial heating and plumbing systems. These valves ensure unidirectional flow while allowing manual shut-off. They are installed in domestic hot and cold water lines, circulation systems, and in applications where backflow prevention is required. Technicians and installers often use these valves in conjunction with pumps, expansion vessels, and heat exchangers. The compact design and butterfly-shaped handle make them suitable for tight spaces and frequent manual operation.

The valve is designed for use in systems with fluctuating pressure and temperature conditions. It is particularly useful in systems where isolation and backflow prevention are required, such as in circulation loops or when connecting to external water sources. The internal thread connection allows for secure and leak-free installation in standard pipe systems.

Technical parameters

Material	Nickel-plated brass CW617N
Operating temperature	+5 °C
Nominal pressure	PN 16
EAN	8016615004793
Weight	0.25 kg
Code	323040
Brand	IVAR

The operating temperature range of +5 °C to +90 °C allows the valve to be used in both cold and hot water systems. The PN 16 pressure rating indicates that the valve is suitable for systems with a maximum working pressure of 16 bar. The nickel-plated brass CW617N material ensures resistance to corrosion and mechanical wear, making it suitable for long-term use in water systems.

Installation and connection

The valve is installed using internal thread connections (FF) on both ends. The 1/2 inch size is compatible with standard copper or plastic pipes used in domestic plumbing and heating systems. Before installation, ensure the system is depressurised and the pipe ends are clean and free from debris. Apply a suitable thread sealant or PTFE tape to the threads to prevent leaks. A common mistake during installation is over-tightening the valve, which can damage the sealing surfaces or the body. Always check for leaks after installation and before commissioning the system.

Compatibility and accessories

This valve is compatible with standard water systems using 1/2 inch internal thread connections. It is suitable for use with copper, PEX, and polypropylene pipes. No additional accessories are required for standard installation. However, for systems with high flow rates or frequent manual operation, it is recommended to install the valve in an accessible location for easy maintenance and inspection.

Technical background for designers

The valve operates by rotating the butterfly handle to open or close the flow path. The integrated check valve prevents reverse flow by using a spring-loaded or weight-loaded mechanism that closes automatically when flow stops. The nickel-plated brass CW617N material provides good mechanical strength and resistance to corrosion in water environments. The PN 16 rating ensures the valve can handle standard domestic and commercial water pressures. The operating temperature range allows for use in both cold and hot water systems without material degradation. The valve should be installed in a straight section of pipe to ensure proper function of the check valve mechanism.

Service and operation

The valve requires minimal maintenance due to its robust construction. Regular visual inspections are recommended to check for leaks, corrosion, or wear on the handle and sealing surfaces. If the check valve mechanism becomes sluggish or fails to close properly, disassemble and clean the internal components. No specific service intervals are provided in the technical data, but any signs of malfunction should be addressed immediately to prevent system failure.

Frequently asked questions

Can this valve be used in a hot water circulation system?
Yes, the valve is suitable for hot water systems with operating temperatures up to +90 °C, making it compatible with circulation loops and domestic hot water installations.

Is the check valve mechanism automatic or manual?
The check valve mechanism is automatic and closes when flow stops, preventing backflow without the need for manual intervention.

Can this valve be used with PEX or copper pipes?
Yes, the internal thread (FF) connection is compatible with both PEX and copper pipes commonly used in domestic plumbing and heating systems.

What is the maximum working pressure of this valve?
The valve has a pressure rating of PN 16, which means it is suitable for systems with a maximum working pressure of 16 bar.