Stainless steel internal thread high pressure globe valve
Model: Q21F-64P
Specification: DN25
1、 Introduction:
Threaded ball valve body casting It adopts the advanced technology introduced from Baodao, with reasonable structure and beautiful appearance. The valve seat adopts elastic sealing structure, with reliable sealing and easy opening and closing. The valve rod adopts a bottom mounted structure with reverse seal, and the valve rod will not be flushed out when the valve chamber is abnormally pressurized. All standard ISO can be carried Bracket Platforms and locking devices. 90 ° settable switch The positioning mechanism is locked as required to prevent misoperation. The driving mode is manual, electric and pneumatic.
2、 Principle of ball valve:
The high pressure ball valve has the action of rotating 90 degrees. The cock body is a ball with a circular through hole or channel passing through its axis. The ball valve in the pipeline is mainly used to cut off, distribute and change the flow direction of the medium. It can be closed tightly with only 90 degree rotation and a small rotating torque. Ball valve is more suitable for use as switch and shut-off valve, but recent development has designed ball valve to be used for throttling and flow control, such as V-type ball valve.
The main characteristics of high pressure ball valve are its compact structure, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often closed, not easy to be eroded by media, and easy to operate and maintain. It is suitable for general working media such as water, solvent, acid and natural gas, and also suitable for media with poor working conditions, such as oxygen, hydrogen peroxide, methane and ethylene It is widely used in various industries. The valve body of the ball valve can be integral or combined.
3、 Features of ball valve:
1. The fluid resistance is small, and its resistance coefficient is equal to that of pipe sections with the same length.
2. Simple structure, small volume and light weight.
3. Tight and reliable. At present, plastic is widely used as the sealing surface material of the ball valve with good sealing performance, and it has also been widely used in the vacuum system.
4. Convenient operation, fast opening and closing, 90 ° rotation from full opening to full closing, convenient for remote control.
5. It is easy to maintain, the ball valve structure is simple, the sealing ring is generally movable, and it is easy to remove and replace.
6. When the valve is fully opened or 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. It has a wide range of applications, ranging from a few millimeters to several meters in diameter, from high vacuum to high pressure.
The products of Shanghai Weidie Valve Co., Ltd. include: wafer butterfly valve, worm wheel butterfly valve, flange butterfly valve, electric butterfly valve, pneumatic butterfly valve, ball valve, gate valve, stop valve, plunger valve, drain valve, filter, regulating valve and other types of valves
