Ball cap IVAR.KK 51, 4" FF

Product detailed description

This ball valve is commonly used in industrial and commercial water supply systems, including heating and plumbing installations. It provides a tight shut-off function for controlling flow in large-diameter pipelines. Installers often encounter such valves in central heating circuits, domestic hot and cold water lines, and pressurised distribution systems where a durable and reliable sealing mechanism is required.

The IVAR.KK 51 is suitable for both new installations and system upgrades. Its robust construction and compatibility with standard pipe sizes make it a preferred choice for professionals working in municipal infrastructure, industrial facilities, or large-scale building projects. The valve is designed to handle fluctuating pressures and temperatures, making it ideal for environments with variable operating conditions.

Technical parameters

Nominal pressure	PN 10
Weight	11.35 kg
Code	5125150400
Brand	IVAR

The nominal pressure rating of PN 10 indicates the maximum pressure the valve can safely handle under normal operating conditions. The increased pressure rating at lower temperatures (PN 30 at +100 °C) allows for flexibility in system design. This makes the valve suitable for both low-pressure and high-pressure applications depending on the temperature regime.

Installation and connection

This ball valve features internal threading on both ends (FF connection), which requires precise alignment during installation to avoid misalignment and leakage. The connection size is 4 inch, and installers should ensure that the mating flanges are clean and undamaged before tightening. The recommended torque for securing the flange connections should be followed to prevent over-tightening, which can damage the sealing surface. A critical step during installation is verifying the orientation of the lever. The lever should be positioned for easy access and operation, typically aligned horizontally when open. Incorrect positioning can lead to operational difficulties or safety hazards. Additionally, the valve should be installed in a location that allows for unobstructed access for future maintenance or replacement.

Compatibility and accessories

This ball valve is compatible with standard water supply systems using 4 inch internal-threaded flanges. To complete the installation, appropriate gaskets or sealing rings must be selected according to the system’s specifications. Due to the absence of related products listed, installers should consult the technical documentation to verify compatibility with existing components or system requirements.

Technical background for designers

The operating principle of this ball valve relies on a spherical disc with a through-hole that aligns or blocks the flow path. When the lever is rotated, the ball turns, allowing or stopping the flow of water. The body is made of nickel-plated brass CW617N, a corrosion-resistant alloy suitable for potable water applications. The absence of silicone in the sealing components ensures compliance with drinking water regulations. The valve integrates into the system via flanged connections, ensuring secure and leak-free operation. Long-term performance depends on maintaining the integrity of the sealing surfaces and avoiding excessive thermal stress. Proper alignment and installation help maximise the valve’s service life and efficiency.

Service and operation

Routine checks should include inspecting the lever for smooth operation and verifying the tightness of the flange connections. Any signs of leakage or stiffness in the lever movement should be addressed promptly. The valve does not require scheduled servicing beyond these basic checks unless specified in the manufacturer’s technical documentation.

Frequently asked questions

Can the ball valve be used in hot water systems?
Yes, the valve is rated for operation at elevated temperatures, including +150 °C, provided the pressure conditions comply with the PN ratings specified.

Is this valve suitable for potable water applications?
Yes, the valve meets ATEST certification for drinking water and is constructed without silicone, which ensures compatibility with potable water standards.

How is the lever positioned for optimal operation?
The lever should be aligned horizontally when the valve is fully open and perpendicular when closed. This ensures ease of operation and clear visual indication of the valve’s status.

What sealing material is used in the valve?
The sealing components are made of materials that do not contain silicone, as stated in the product specification. This ensures chemical inertness and compliance with drinking water regulations.