Features

1. Small pressure loss: water loss is zero when fully open, and the flow channel is completely unobstructed; the inner cavity is automatically cleaned, the valve core rotates 90 degrees, and the inner cavity of the valve body is automatically flushed to clean the debris in the medium and the medium will not be deposited in the valve cavity. The ball is hemispherical, and the circulation has the highest Cv value, which enhances the system efficiency of the pump and minimizes abrasion.

2. Resistance to particle wear: Using the principle of double eccentricity during the closing process, the ball crown only leans against the valve seat at the last moment without forming friction; and the sealing ring on the valve seat is welded with wear-resistant self-lubricating alloy, which is not easy to wear and not easy to be washed; the ball crown of the knife-shaped ball mouth and the valve seat have a wiping and shearing effect, which is not easy to scale.

3. Reliable automatic compensation seal: Under positive pressure, the ball and the valve seat are closed more and more tightly by using the principle of eccentricity, thus obtaining a good seal: Under negative pressure, the floating valve seat is automatically pushed tight when under pressure, and the higher the pressure, the tighter the valve seat pushes against the ball, thus obtaining a good seal; it can maintain a long-lasting tight seal and can adapt to harsh working conditions. Under long-term use, if the valve seat seal wears the ball or is damaged, the valve seat will automatically push against the ball under the action of the elastic tube, thus obtaining a good automatic compensation function.

4. Suitable for high-velocity media: Because the ball is hidden on one side of the valve cavity, a straight-through flow channel is formed without flow resistance, and the solid eccentric fixed crankshaft has no vibration and noise in high-velocity media.

5. Long life and easy switching: There are no vulnerable parts. Due to the eccentricity, the sealing surface of the ball and the valve seat are completely separated during the opening and closing of the valve, so that there is no scratch between the valve seat surface and the spherical surface of the ball crown and the frictionless rotation, which effectively reduces the operating torque and is easy to operate. The automatic compensation function of the valve greatly improves the life of the valve.

6. Convenient maintenance: This valve is designed as a top-mounted valve, and the ball crown and the supporting ball are installed from the top of the valve; when inspecting, you only need to open the valve cover to lift out the ball crown and the supporting ball to carry out maintenance and sealing rings and other accessories, without having to remove the entire valve from the pipeline, which brings great convenience to underground pipelines, especially ball valves for atomic energy industry.

7. This valve can retain the medium in the pipeline as appropriate during maintenance operations, without causing energy waste; this eliminates many preliminary auxiliary work for the user, making maintenance simpler. 

8. In some specific occasions, this valve may not affect the normal operation of the pipeline system during emergency repairs. As long as the upper opening is quickly closed after the ball assembly is taken out, the pressurized operation of the pipeline can be immediately restored, minimizing the loss of benefits caused by the emergency repair of the valve.

Valve body material: Cast steel, stainless steel

Nominal pressure PN: 1.6～2.5MPa

Nominal diameter DN: 50～3000mm

Operating temperature T: -29～300℃，-29～425℃

Connection form: Flange

Applicable media: Coal powder, waste residue, sewage, acid and alkali liquids, slurry, steam, gas, oil, granular, fiber and other media

Operating mechanism: Manual, pneumatic, electric