Gv. internal - external, 3/4" FM

Product detailed description

Ball valves with internal-external levers are commonly used in heating, plumbing and irrigation systems where access to control points is limited. This valve is suitable for applications involving water, including cold and hot water distribution, circulation loops and make-up water supply. The extended thread design allows for flexible installation in tight spaces and ensures secure connections in pressurised systems. The valve is intended for use in industrial, commercial and residential buildings where reliable shut-off is required.

The PN 40 rating makes it suitable for high-pressure environments, and the operating temperature range from -20°C to +120°C ensures functionality in both freezing and hot conditions. The nickel-plated brass body provides resistance to corrosion and mechanical wear, making it ideal for long-term use in aggressive environments. The full-flow design minimises pressure drop and ensures efficient fluid movement through the system.

Technical parameters

Installation and connection

Installation requires matching the internal and external thread connections to the system piping. The valve is typically installed between two threaded pipe ends, with one side having an internal thread and the other an external thread. The extended thread allows for alignment adjustments during installation. Ensure that the sealing compound or tape is applied correctly to prevent leaks. Check that the lever is in the open position before tightening the connections to avoid damaging the internal components. Common installation errors include over-tightening the threads and failing to align the lever properly, which can lead to restricted flow or mechanical failure.

Compatibility and accessories

This valve is compatible with standard water supply and heating systems using threaded connections. It can be used with other IVAR EVOLUTION series components, such as ball valves with lever extensions and full-bore designs. For complete system integration, ensure that the connected pipes and fittings are also rated for the same pressure and temperature conditions. Additional accessories, such as sealing tapes and wrenches, should be used during installation to ensure a secure fit.

Technical background for designers

The valve operates via a rotating ball with a central bore that allows or blocks fluid flow when aligned or misaligned with the flow direction. The nickel-plated CW617N brass body offers high strength and resistance to thermal expansion, making it suitable for fluctuating temperature conditions. The full-bore design ensures minimal turbulence and pressure loss, which is important for maintaining system efficiency. The extended lever provides better leverage for manual operation, especially in high-torque applications. The valve is designed to integrate seamlessly into existing systems without requiring major modifications.

Service and operation

Regular inspection of the valve is recommended to ensure continued performance. Check for signs of leakage around the threads and verify that the lever moves freely without resistance. If the valve shows signs of wear or reduced functionality, disassemble and clean the internal components. No specific service intervals are provided, but maintenance should be performed according to the system requirements and operating conditions.

Frequently asked questions

Can this valve be used in a hot water system?
Yes, the valve is suitable for hot water systems as it operates up to +120°C and is constructed from materials approved for potable water use.

Is the valve suitable for use in a pressurised heating circuit?
Yes, the PN 40 rating ensures that the valve can handle high-pressure conditions typical of heating circuits.

Can the valve be installed in a vertical orientation?
Yes, the valve can be installed vertically or horizontally, depending on the system layout and accessibility requirements.

Does the valve require a special tool for installation?
A standard wrench is sufficient for tightening the threaded connections during installation.