Structure and Features of Pneumatic Three-Way Ball Valve:
1. Compact structure, quick opening and closing, smooth flow path, and low fluid resistance.
2. Excellent sealing performance: Achieves leak-proof sealing through the use of tetra elastic deformation material in the four-way valve seat.
3. Multi-functional Valve: Any port can be used without leakage; the three-way valve can be made into an L-shaped port or a T-shaped port.
4. Easy Maintenance: Inspection and repair can be performed without removing the entire valve body after the system is depressurized.
5. Suitable for switching the flow direction of media and for分流 or mixing fluids in piping systems across water supply, petrochemical, metallurgical, mining, light industry, energy, papermaking, food, and steel sectors.
6. Low fluid resistance; its drag coefficient is equal to that of a pipe section of the same length.
7. Simple structure, compact size, and lightweight.
8. Tight and reliable, plastic is widely used as the sealing material for ball valves due to its good sealing properties, and they are also extensively utilized in vacuum systems.
9. Easy operation, quick opening and closing; it takes only a 90° rotation from fully open to fully closed, suitable for long-distance control. 10. Easy maintenance; the ball valve structure is simple, and the seals are generally mobile, making disassembly and replacement convenient.
11. When fully open or fully closed, the sealing surface of the ball and valve seat is isolated from the medium. During passage of the medium, it causes erosion of the气动三通球阀 sealing surface.
12. Wide application range, from a few millimeters to several meters in diameter, and suitable for high vacuum pressure.
13. The three-way ball valve features an integrated structure, a sealing type with four valve seats, minimal flange connections, high reliability, and a lightweight design.
14. Ball valves are divided into two types: single-acting and double-acting, based on their operational mode. The characteristic of the single-acting type is that the ball valve will remain in the state required by the control system in the event of a failure in the power source.
What are the reasons for the high reliability of pneumatic three-way ball valves?
(1) A pair of spherical and valve seat sealing components suffer from abrasion and rapid wear, which can get stuck during operation (especially without lubricant). Therefore, they can be reliably used in corrosive media and low-boiling point liquids.
(2) Internal valve stem structure eliminates the potential accident隐患 of the valve stem flying out due to the loosening of the packing gland under fluid pressure.
(3) Static-free and fire-resistant pneumatic three-way ball valves, suitable for conveying oil and gas pipelines.
(4) The valve body channel is smooth and even, making it more suitable for conveying viscous fluids, slurry, and solid particles.
(5) Due to being jam-resistant during operation (especially without lubricant), it can be reliably used in corrosive media and low-boiling point liquids.
(6) The spherical shut-off piece can automatically locate in position and withstand high pressure differences during closure.
(7) Achieves full bidirectional sealing over a wide range of pressures and temperatures.
(8) During full open and full close positions, the sealing surfaces of the ball and valve seat are isolated from the medium, thus preventing erosion of the sealing surfaces by the high-speed medium passing through the valve.
(9) The pneumatic three-way ball valve features a compact structure and light weight, making it a reasonable valve design for low-temperature medium systems.
(10) The valve body is symmetrical, especially in the case of welded valve body structures, allowing it to effectively withstand stresses from the pipeline.
(11) Full-welded body pneumatic three-way ball valve, suitable for direct burial underground, protecting internal valve components from erosion. With a long service life of up to 30 years, it is ideal for oil and gas pipeline applications.
Pneumatic three-way ball valve stem anti-leakage design
The valve rod is designed with anti-ejection features.
2. Stage sealing with a conical valve stem seal effectively prevents leakage during the rotation of the valve stem, and also effectively prevents leakage under abnormal overpressure conditions.
3. Stage sealing is achieved as a set of V-shaped packing elements expand outward after being compressed, thereby preventing leakage.
4. Automatically compensates for the wear on the packing and valve stem seal by releasing the pre-tensioned compression force of the disc spring.
5. The pneumatic three-way ball valve utilizes a valve stem nut to tightly secure the entire valve stem sealing system, preventing leakage.