Product Features

Suitable for frequent operation, quick opening and closing, lightweight, low fluid resistance, simple structure, relatively small volume, light weight, easy maintenance, good sealing performance, not limited by installation direction, medium flow direction can be arbitrary, no vibration, low noise.
Suitable for controlling pulp, mortar, and viscous fluids.

Principle of V-shaped ball valve

Cut off impurities with a wavy edge. During the rotation of the sphere, the V-shaped blade of the sphere is tangent to the valve seat, thereby cutting off fibers and solid substances in the fluid. However, general ball valves do not have this function, which can easily cause fiber impurities to get stuck when closing, causing great inconvenience to maintenance and repair. And the valve core of the V-shaped ball valve will not be stuck by fibers. In addition, due to the use of flange connection, it is easy to disassemble and assemble without the need for special tools, and maintenance is also simple and easy. When the valve is closed. The V-shaped notch and valve seat create a scissor like effect, which not only has self-cleaning function but also prevents the ball core from getting stuck. The valve body, valve cover, and valve seat are each made of metal point-to-point structure, and a valve stem spring with a low friction coefficient is used. Therefore, the operating torque is small and stable.

Main components of V-type ball valve

Cv value table of standard V-type ball valve products

For various types of V-type ball valves, including: wafer-type V-type ball valves, flange-type V-type ball valves, pneumatic double-actuator V-type ball valves, compact pneumatic V-type control valves, and manual worm gear V-type control valves. The Cv value of a V-type ball valve represents the flow capacity of the V-type control valve for liquids; that is, the flow coefficient. It is generally called the Cv value abroad and the Kv value in China. It is an important parameter of valve products.

Calculation formula: Cv = qv * [ρ * △p0 / (ρ0 * △p)]^0.5

Where: Cv: Flow capacity,

USgal/min qv: Measured water flow,

USgal/min ρ: Measured water density, g/cm;

ρ0: Density of water at 60°F, ρ0 = 1g/cm;

△p = p1 - p2. p1 and p2 are the pressure differences between the upstream and downstream of the measured component, lbf/in2.

The inherent flow characteristic of the V-type ball valve is an approximate percentage characteristic, as shown in the figure

Maximum allowable leakage of V-type ball valve

External dimensions of V-type ball valve

1. If the model has not been selected before ordering, please provide us with the operating parameters:
   (1) Nominal diameter DN (mm);
   (2) Nominal pressure (MPa or bar);
   (3) Fluid properties (including medium temperature, viscosity, or acidity/alkalinity);
   (4) Pressure before and after the valve (pressure differential);
   (5) Requirements for flow characteristics;
   (6) Materials of valve body and valve core;
   (7) Connection type;
   (8) Driving method (provide air supply pressure, driving voltage);
   (9) Supporting accessories (for pneumatic valves, it is recommended that users install an air filter triplet and a 2-position 5-way solenoid valve);
   (10) On-site working conditions.
2. If the product model of our company has been selected by the design unit, please order directly from our production department according to the model;
3. When the application occasion is very important or the pipeline is relatively complex, please provide the design drawings and detailed parameters as much as possible, and our experts will review and check them for you.