Industrial valves are an important accessory to control the flow of media on industrial pipelines and can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil, liquid metal, and radioactive media.
The valve consists of three major parts: valve body, opening and closing mechanism, and valve cover.
Turbo Ball Valve
The turbine ball valve is an important type of valve, widely used in petrochemical, long-distance pipeline, and other fields. The closing part of a ball valve is a ball (or part of a ball) with a hole, and the ball rotates with the valve stem to open or close the valve. Among various valves, the ball valve has the smallest flow resistance. When the full bore ball valve is opened, the diameter of the ball passage, the valve body passage, and the connecting pipe are equal to one diameter, and the medium can flow almost without loss. The ball valve can be fully closed and opened by rotating 90°, opening and closing quickly. Compared with the same specification of the gate valve and globe valve: the ball valve is small in size, lightweight, and easy to install in the pipeline.
Features
(1) small fluid resistance, full bore ball valve no flow resistance.
(2) simple structure, small size, lightweight.
(3) Tight and reliable. It has two sealing surfaces, and the sealing surface material of the ball valve is now widely used in various plastics, with good sealing performance, and can achieve complete sealing. It is also widely used in vacuum systems.
(4) Easy to operate, quick to open and close, only 90° rotation from fully open to fully closed, easy to control from a distance.
(5) Easy to maintain, the ball valve has a simple structure and the seal is generally movable, making disassembly and replacement more convenient.
(6)When fully open or fully closed, the sealing surface of the ball and seat is isolated from the medium, and the medium will not cause erosion of the sealing surface of the valve when passing through.
(7) Wide range of applications, ranging from a few millimeters to several meters in diameter, from high vacuum to high pressure can be applied.
(8) Due to the wiping nature of the ball valve during opening and closing, it can be used in media with suspended solid particles.
Fully Welded Ball Valve
The valve consists of an all-welded body and a carbon-reinforced Teflon gasket that can operate for long periods in the presence of frequent operations, impurities, and chemicals. The finely ground stainless steel ball allows for years of free and reliable opening and closing.
The floating ball construction and beveled elastomeric gasket ensure that the seal is tightly pressed against the ball, keeping the valve sealed even under unstable pressure conditions.
The stem leak-proof structure adopts two "O" rings, which makes the stem drive freely and seal tightly.
Features
No need for maintenance, adjustment, lubrication, effortless installation, long-term reliable operation, and low operating cost.
The stem can be extended for insulation.
The operating handle can be reversed for removal and installation.
The valve body contains no heavy and unreliable castings.
Very easy to install the adjustment mechanism.
Fully Welded Pipe Line Ball Valve
Fully welded pipeline ball valves are suitable for city gas pipelines, large heating equipment pipelines, and various fluid, gas heating, and fuel supply pipelines in steel mills.
Features
The valve body is made of a steel plate and assembled and welded to avoid any possible leakage of the medium. Spring type valve seat combination structure, adaptable to pressure and temperature changes, to ensure close contact between the seal ring and the ball. The valve is flexible in opening and closing and easy to operate under the premise of ensuring sealing. The ball and stem are machined by precision machine tools, which reduces the friction coefficient between the contact surfaces and further improves the sealing performance and operating torque of the valve. Various types of valve actuators are available: manual, pneumatic, electric, hydraulic, gas-hydraulic linkage, etc.
Pneumatic Ball Valve
The pneumatic ball valve is mainly used to cut off or connect the medium in the pipeline, but also for fluid regulation and control. Compared with other valves, it has the following advantages.
1、Low fluid resistance. The ball valve is the smallest fluid resistance of all valves. Even for reduced diameter ball valves, the fluid resistance is relatively small.
2, thrust bearing reduces the friction torque of the valve stem, which can make the stem run smoothly and flexibly for a long time.
3、Good sealing performance of valve seat. The sealing ring made of resilient materials such as polytetrafluoroethylene is used to facilitate sealing, and the sealing capacity of the ball valve increases with the increase of medium pressure.
4、Stem sealing is reliable. Because the stem is only for imitation rotary movement, not up and down movement, so the packing seal of the stem is not easy to damage, the sealing capacity increases with the increase of medium pressure.
5. Since materials such as PTFE have good self-lubricating properties, the friction loss with the ball body is small, so the ball valve has a long service life.
6. The bottom-mounted stem and the raised steps on the stem head prevent the stem from being ejected. If the stem seal is damaged by fire, the convex step can also form metal contact with the valve body to ensure the stem seal.
7. Anti-static function: A spring is set between the ball, stem, and valve body, which can export the static electricity generated during the switching process.
Stainless Steel Ball Valve With Bolted Flange Connections
American Standard Forged Steel Ball Valve is a new generation of high-performance ball valves for long transmission pipelines and general industrial pipelines. Its strength, safety, and resistance to harsh environments are specially designed for a variety of corrosive and non-corrosive media.
Features
This valve is designed with an auxiliary seat emergency sealing system. If the seal is damaged or cannot be sealed in an emergency, the valve can be repaired by injecting the appropriate sealant into the sealing surface through the auxiliary sealing system to achieve emergency sealing. When the transported medium is dirty or contains a small number of particles, to protect the sealing surface and ensure reliable sealing, the sealing surface can also be cleaned by injecting the appropriate cleaning agent or lubricant into the device.
Metal Seated Ball Valves
Metal Seated Ball Valves are suitable for petrochemical, LPG storage, refinery, natural gas, compressor system, oil and gas pipeline, light industry, textile, and other industries.
Features
1、Frictionless opening and closing. This feature completely solves the problem of traditional valves affecting sealing due to friction of sealing surface.
2、Top-mounted structure. The valve installed on the pipeline can be directly online inspected and maintained. It can effectively reduce equipment downtime and lower production costs.
3. Single-seat design. Eliminates the problem of abnormally elevated pressure in the valve cavity media that affects the safety of use.
4. Low torque design. The specially designed stem can be easily opened and closed with only a small handwheel valve.
5. Wedge seal structure. The valve is sealed by the mechanical force provided by the stem, which presses the ball wedge against the seat. The sealing performance of the valve is not affected by changes in the differential pressure of the pipeline, and the sealing performance is reliably guaranteed under various working conditions.
6、Self-cleaning structure of sealing surface. When the ball is tilted away from the seat, the fluid in the pipeline will pass evenly along the ball sealing surface 360 °. It not only eliminates the local scouring of the valve seat by the high-speed fluid but also flushes out the accumulation on the sealing surface to achieve the purpose of self-cleaning.
