WCB thread 2-PC 3PC ball valve
2-PC 3PC ball valve
Size 1/4" 3/8" 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" 2 1/2" 3"
Medium vapor, gas, liquid, viscous or corrosive fluid
Body material cast stel WCB
Seat Seal PTFE
Thread type NPT,BSPT,BSP,DIN259/2999
It has the following advantages:
1. The fluid resistance is small, and its resistance coefficient is equal to that of a pipe segment of the same length.
2. Simple structure, small size, and light weight.
3. Tight and reliable. Currently, the sealing surface material of the ball valve is made of plastic, which has good sealing performance and has also been used in vacuum systems.
4. Easy to operate, quick to open and close, with only a 90 ° rotation from full open to full close, facilitating remote control.
5. Convenient maintenance, simple ball valve structure, and generally movable sealing rings, making disassembly and replacement more convenient
6. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium. When the medium passes through, it will not cause erosion of the valve sealing surface.
7. The diameter can be applied from small to a few millimeters, to large to several meters, from high vacuum to high pressure. When the ball rotates 90 degrees, it should be spherical at both the inlet and outlet to cut off the flow.
The use of ball valve
Since ball valves usually use rubber, nylon and polytetrafluoroethylene as seat sealing ring materials, their service temperature is limited by the seat sealing ring material. The cut-off function of the ball valve is accomplished by the metal balls pressing against each other between the plastic valve seats under the action of the medium (floating ball valve). Under the action of a certain contact pressure, the valve seat sealing ring will undergo elastic-plastic deformation in local areas. This deformation can compensate for the manufacturing accuracy and surface roughness of the ball and ensure the sealing performance of the ball valve. And because the seat sealing ring of a ball valve is usually made of plastic, when selecting the structure and performance of the ball valve, the fire resistance and fire prevention of the ball valve must be considered, especially in petroleum, chemical industry, metallurgy and other departments, in flammable and explosive media. When ball valves are used in equipment and piping systems, more attention should be paid to fire resistance and fire prevention.
Manual threaded ball valve The manual threaded ball valve adopts an integrated structure. It has strong functions, small size, light weight and low cost. , reliable performance, simple matching, large circulation capacity and other characteristics. At present, the valve is widely used in industrial automation control systems in food, environmental protection, light industry, petroleum, papermaking, chemical industry, teaching and scientific research equipment, electric power and other industries. Manual threaded ball valves and butt welded ball valves are divided into integral (one-piece), two-stage and three-stage types. The valve body is cast using advanced technology introduced from Taiwan. It has a reasonable structure and beautiful appearance. The valve seat adopts an elastic sealing structure, which is reliable in sealing and easy to start. The valve stem adopts a bottom-mounted structure with an inverted seal. When the valve cavity heats up abnormally, the valve stem will not be impacted. Two-piece and three-piece ball valves also have butt welding (BW) and socket welding (SW) connection forms. They can also be equipped with international standard ISO bracket platforms and locking devices.
Manual threaded ball valve (standard type) overall dimensions
Manual threaded ball valve (bracket-free type) overall dimensions
Note: The dimensions in the table are without attachments. In addition, due to product improvement and technological innovation, the data may have certain changes. Please consult the salesperson for specific details.
Company qualifications
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