Horizontal check valve CLAPET - 2" FF; metal-to-metal seal FIV.08401

Product detailed description

Horizontal check valves are essential components in closed-loop systems such as heating, plumbing and pump circuits. They prevent reverse flow of media when pumps or other system components stop operating. The IVAR CLAPET model is commonly used in residential and commercial buildings, including industrial facilities, where reliable flow control is required. Installers typically integrate these valves into pump circuits, circulation loops and other pressurised systems to ensure unidirectional flow and system stability.

Correct installation and selection of a check valve are critical to system performance. The CLAPET model is designed for integration into systems with moderate operating conditions, where flow reversal could cause damage or inefficiency. It is particularly suited for applications where the media is water and the system operates within standard temperature and pressure ranges.

Technical parameters

The PN 10 rating indicates that the valve is suitable for systems operating at a maximum pressure of 10 bar. The maximum operating temperature of +80 °C means it is appropriate for heating and hot water systems. The material, brass CW617N, is suitable for potable water applications and provides good corrosion resistance. These parameters are essential for correct sizing and selection in accordance with system requirements.

Installation and connection

The CLAPET horizontal check valve is connected using internal thread (FF) on the inside. The 2 inch connection size must be verified against the system piping to ensure compatibility. During installation, the valve must be oriented correctly to allow media flow in the intended direction. A common mistake is incorrect orientation, which can lead to improper sealing and system failure. The installer should also ensure that the pipe is clean and free of debris before fitting the valve to avoid damage to the sealing surface.

Compatibility and accessories

This model is compatible with standard plumbing and heating systems that use brass components and internal thread connections. It is typically used in conjunction with pumps, circulation systems and other valves. No additional accessories are required for standard installation. The related model FIV.08406 features a soft disc seal and may be used in similar applications where a different sealing mechanism is preferred.

Technical background for designers

The CLAPET check valve operates by allowing media to flow in one direction while closing automatically to prevent backflow. The metal-to-metal seal ensures a tight closure without the need for additional sealing materials. The brass CW617N material is selected for its durability and compatibility with potable water. The PN 10 rating and +80 °C operating temperature define the valve’s suitability for typical heating and plumbing applications. The valve’s performance is influenced by the media’s temperature and pressure, as well as the condition of the sealing surfaces and the alignment of the valve in the system.

Service and operation

Regular inspection of the valve is recommended to ensure that the sealing surfaces remain intact and free from debris. No scheduled service intervals are specified in the technical data. During operation, the installer should monitor for signs of leakage or abnormal noise, which may indicate wear or misalignment. If the valve is suspected of malfunctioning, it should be removed and inspected for damage or contamination.

Frequently asked questions

Can the CLAPET model be used in potable water systems?
Yes, the valve is constructed from brass CW617N and is certified for use with potable water.

Is the CLAPET model suitable for temperatures above +80 °C?
No, the maximum operating temperature is +80 °C as specified in the technical data.

Can the CLAPET model be connected to systems with different thread types?
No, the valve features an internal thread (FF) and must be connected to compatible piping.

What is the difference between CLAPET and FIV.08406 models?
The CLAPET model uses a metal-to-metal seal, while the FIV.08406 model uses a soft disc seal.