Electric American standard flange ball valve company

Pneumatic three-way flange ball valve,

Pneumatic three-way flange ball valve,

• Pneumatic high platform flange ball valve is easy to install without brackets

• Pneumatic valve can be tightly closed with only a 90 degree pneumatic rotation and a small rotational torque. *The equal inner cavity of the valve body provides a low resistance and straight passage for the medium. It is generally believed that ball valves are suitable for direct opening and closing, but recent developments have designed ball valves to have throttling and flow control functions. The main characteristics of ball valves are their compact structure, easy operation and maintenance, suitable for general working media such as water, solvents, acids, and natural gas, as well as for media with harsh working conditions such as oxygen, hydrogen peroxide, methane, and ethylene. The valve body of a ball valve can be integral or modular.

• Practical role

• The working principle of stainless steel pneumatic ball valve is to rotate the valve to make the valve smooth or blocked. Pneumatic ball valve switches are lightweight, small in size, can be made into large diameters, reliable in sealing, simple in structure, easy to maintain, and the sealing surface and spherical surface are often in a closed state, which is not easily eroded by the medium. They are widely used in various industries.

• Pneumatic high platform flange ball valve is easy to install without brackets

• Pneumatic flange ball valves are mainly used in pipelines for fast cutting speed, distribution, and changing the flow direction of media. Pneumatic ball valve is a type of valve that has been adopted in recent years, and 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 ball valves is made of plastic, which has good sealing performance and has also been used in vacuum systems.

• 4. Easy to operate, quick opening and closing, only need to rotate 90 ° from fully open to fully closed, making it convenient for remote control.

• 5. Easy to maintain, pneumatic ball valve has a simple structure, and the sealing ring is generally movable, making disassembly and replacement relatively convenient.

• When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and when the medium passes through, it will not cause erosion of the valve sealing surface.

• 7. Applicable, with diameters ranging from a few millimeters to several meters, suitable for applications from high vacuum to high pressure.

• Pneumatic three piece ball valves have been applied in various sectors such as petroleum, chemical, power generation, papermaking, atomic energy, rockets, as well as in people's daily lives.

• Classified by structural form

• 1、 Floating pneumatic ball valve

• The ball of the stainless steel pneumatic ball valve is floating, and under the pressure of the medium, the ball can produce a certain displacement and press tightly against the sealing surface at the outlet end, ensuring the sealing of the outlet end.

• The floating stainless steel pneumatic ball valve has a simple structure and good sealing performance, but the ball bears all the load of the working medium transmitted to the outlet sealing ring. Therefore, it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. This structure is used for medium and low pressure ball valves.

• 2、 Fixed ball pneumatic ball valve

• The ball of the stainless steel pneumatic ball valve is fixed and does not move under pressure. Fixed ball valves are equipped with floating seats, which move when subjected to medium pressure, causing the sealing ring to press tightly against the ball to ensure sealing. Usually, bearings are installed on the upper and lower shafts of the sphere, with a small operating torque, suitable for high-pressure and large-diameter valves.

• In order to reduce the operating torque of pneumatic ball valves and increase the reliability of sealing, oil sealed ball valves have emerged in recent years. They inject lubricating oil between the sealing surfaces to form a layer of oil film, which enhances sealing performance and reduces operating torque, making them more suitable for high-pressure and large-diameter ball valves.

• 3、 Elastic ball pneumatic ball valve

• The ball of a pneumatic ball valve is elastic. The ball and valve seat sealing ring are both made of metal materials, and the sealing pressure ratio is very high. Relying on the pressure of the medium itself cannot meet the sealing requirements, and external force must be applied. This type of valve is suitable for high temperature and high pressure media.

• An elastic sphere is obtained by creating an elastic groove at the lower end of its inner wall. When closing the channel, use the wedge-shaped head of the valve stem to expand the ball and press it against the valve seat to achieve sealing. Release the wedge-shaped head before rotating the sphere, and the sphere will return to its original shape, creating a small gap between the sphere and the valve seat, which can reduce friction and operating torque on the sealing surface.

• Pneumatic ball valves can be divided into straight through, three-way, and right angle types according to their channel positions. The latter two types of ball valves are used for distributing media and changing the flow direction of media.