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Stainless Steel Ball Valve

Views: 0     Author: Stainless steel ball valves supplier     Publish Time: 2022-04-07      Origin: stainless steel ball valves supplier

Stainless steel ball valves only require 90 degrees of rotation and a small torque to close tightly. The completely equal body cavity provides the medium with small resistance and straight flow channel. The main characteristics of ball valve itself is compact, easy to operate and maintenance, stainless steel ball valve can be used to control the flow of air, water, steam, a variety of corrosive media, mud, oil, liquid metal and radioactive media and other types of fluid. Ball valve body can be integral, can also be combined. This type of valve in the pipeline should generally be installed horizontally. Stainless steel ball valve classification: stainless steel pneumatic ball valve, stainless steel electric ball valve, stainless steel manual ball valve. Stainless steel ball valve material is divided into 304,316,321 stainless steel ball valve.

The working principle of Ball valves work by rotating the spool to make the valve unblocked or blocked.Ball valve switch is light,small size,can be made into a large diameter,reliable sealing,simple structure, convenient maintenance, sealing surface and spherical surface is often in a closed state, not easy to be washed by the medium, widely used in various industries.

Ball valve and plug valve are the same type of valve,only its closing part is a ball,ball around the center line of the valve body for rotation to open, close a valve. Ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. Ball valve is widely used as a new valve

The advantages of Stainless steel ball valves

  1. The fluid resistance is small, and its resistance coefficient is equal to that of the pipe section of the same length.

  2. Simple structure, small volume, light weight.

  3. Tight and reliable, the sealing surface material of ball valve is widely used in plastic, good sealing, and has been widely used in vacuum system.

  4. Easy to operate, open and close quickly, from fully open to fully closed as long as the rotation of 90°, convenient for remote control.

  5. Convenient maintenance, ball valve structure is simple, sealing ring is generally active, disassembly and replacement are more convenient.

  6. When fully open or fully closed, the sealing surface of the ball and seat is isolated from the medium. When the medium passes, it will not cause the erosion of the sealing surface of the valve.

  7. Wide application range, from small diameter to a few millimeters, to a few meters, from high vacuum to high pressure can be applied. Ball valve has been widely used in petroleum, chemical industry, power generation, paper making, atomic energy, aviation, rocket and other departments, as well as People's Daily life.

Stainless steel ball valves classification

SS Ball valves will be divided according to the structure for 3 types

  1. Floating ball valve: the ball valve is floating, under the action of medium pressure, the ball can produce a certain displacement and tight pressure on the sealing surface of the outlet end, to ensure the outlet end sealing. Floating ball valve structure is simple, good sealing, but the ball to bear the load of the working medium all passed to the export seal ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the sphere medium. This structure is widely used in middle and low pressure ball valves.

  2. Fixed ball valve: the ball valve is fixed, pressure does not produce movement. Fixed ball valve with floating seat, by medium pressure, seat movement, so that the sealing ring pressed on the ball, to ensure sealing. Bearings are usually installed on the upper and lower shafts of the ball, and the operation torque is small, suitable for high pressure and large diameter valves. In order to reduce the operating torque of ball valve and increase the reliability of the seal, there is an oil seal ball valve, not only in the sealing surface between the pressure injection of special lubricating oil, to form a layer of oil film, that is, to enhance the sealing, and reduce the operating torque, more suitable for high-pressure large-caliber ball valve

  3. Elastic ball valve: the ball of the ball valve is elastic.Ball and valve seat sealing ring are made of metal materials, sealing specific pressure is very large, relying on the pressure of the medium itself has not reached the requirements of sealing, external force must be applied. This valve is suitable for high temperature and high pressure media. The elastic sphere is in the lower end of the inner wall of the sphere open an elastic groove, and obtain elasticity. When closing the aisle, use the stem wedge to open the ball and seal the seat. Loosen the wedge head before turning the ball, the ball will then return to its original shape, so that there is a small gap between the ball and the seat, can reduce sealing surface friction and operating torque.    

Ball valve according to its channel position can be divided into 

1.straight-through ball valves

2.three-way ball valves:

Three-way ball valves are T and L. T-type can make three orthogonal pipeline mutual connection and cut off the third channel, shunt, confluence effect. L type can only connect two mutually orthogonal pipelines, can not maintain the connectivity of the third pipeline at the same time, only play an allocation role.Three-way ball valve in the structure of the integration of the structure, 4 seat sealing type, flange connection less, high reliability, design to achieve lightweight 

Tee ball core is divided into T type and L type, with long service life, large circulation capacity and small resistance 

3.right-angle ball valves

ball valve according to the action type is divided into two types of single action and double action, single action type is characterized by once the power source failure, ball valve will be in the state of control system requirements.

Ball valve according to its composition can be divided into one piece,two pieces,three pieces ball valves.

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