Gv. internal - external, 6/4" FM

Product detailed description

This ball valve is commonly used in residential and commercial plumbing systems, including water distribution networks, air systems and non-aggressive chemical applications. It provides reliable shut-off functionality and is suitable for installation in heating, ventilation and industrial systems. The nickel-plated brass body ensures durability and resistance to corrosion, making it ideal for environments where long-term reliability is essential.

Designed for use in systems requiring frequent operation or maintenance, the internal-external lever configuration allows for easy access and control from either side of the pipe. The valve is certified for potable water applications and is suitable for both new installations and system upgrades. It is recommended for use in systems where tight sealing and minimal maintenance are required.

Technical parameters

Installation and connection

The valve is designed for internal and external thread connections (FM), with a size of 6/4". During installation, ensure that the valve is aligned with the pipe axis to prevent stress on the body. Avoid bending or twisting the valve during fitting. Check that the threads are clean and free from debris before tightening. Use appropriate sealing compounds as required by local standards.

Avoid welding within 20 cm of the valve body to prevent heat damage. Ensure that the valve is installed in a location that allows for full operational movement of the lever. Never attempt to disassemble the valve body or remove the bonded joints. Any damage to the body or lever requires immediate replacement of the entire unit.

Compatibility and accessories

This ball valve is compatible with standard water, air and non-aggressive media systems. It is designed for use with copper, steel or plastic pipes with matching thread sizes. No additional accessories are required for standard installation. Ensure that the system pressure does not exceed PN 25 and that the media temperature remains within the specified range.

Technical background for designers

The valve operates using a spherical disc with a through-hole, which rotates to open or close the flow path. The specially shaped ball and sealing profile reduce friction and improve sealing performance. The nickel-plated brass body provides high strength and resistance to corrosion. The bonded and welded body ensures structural integrity and prevents leakage. The valve is designed for use in systems where minimal maintenance and long service life are required.

The CW617N brass material is approved for use in potable water systems. The internal geometry of the ball minimizes contact surface area with the sealing ring, reducing the risk of sediment buildup and wear. The design also prevents debris from interfering with the sealing function during operation. The valve integrates seamlessly into existing pipe networks and can be used in both horizontal and vertical orientations.

Service and operation

The valve does not require regular maintenance. However, it is recommended to fully operate the valve at least once every six months to remove any potential sediment buildup from the ball. This helps maintain smooth operation and prevents seizing. In the event of damage to the body or lever, the entire unit must be replaced. Do not attempt to repair or disassemble the valve. Always follow the manufacturer’s guidelines for safe operation and inspection.

Frequently asked questions

Can the valve be used in a hot water system?
Yes, the valve is rated for temperatures up to +120 °C, making it suitable for hot water applications.

Is it possible to disassemble the valve for cleaning?
No, the valve body is permanently bonded and welded. Disassembly is not permitted and will void the warranty.

Can the valve be used in a chemical system?
Yes, the valve is suitable for non-aggressive media. Check the chemical compatibility with the brass material before installation.

What should be done if the lever becomes stiff?
Operate the valve fully several times to clear any potential sediment. If stiffness persists, the valve should be replaced.