How to choose the pneumatic valve model, hand to hand to teach you to pick the quality pneumatic valve

How to choose the pneumatic valve model, hand to hand to teach you to pick the quality pneumatic valve  

The role of pneumatic valve is very good, but there are many pneumatic valve manufacturers on the market, we need to pay attention to choose some faster manufacturers, so the quality of pneumatic valve will be better, the application effect will be very good, so how to choose the model of pneumatic valve? Today like Valve hand to hand teach you to pick the quality pneumatic valve! Look forward to your assistance!
Proper selection of valve pneumatic device:
1. Actual operating torque:
Operating torque is the basic parameter to select valve pneumatic device. The output torque of the pneumatic device shall exceed the actual operating torque of the valve. The output torque of the general pneumatic device should be 1.2~1.5 times of the larger actual operating torque of the valve.
2. Open and close rate:
Generally for the need to open and close the speed of the valve pneumatic device selection.
3. Selection criteria:
For globe valves, globe valves should generally be selected as only reciprocating uniform linear motion pneumatic devices; For valves, disc valves and plug valves generally only choose according to the rack cylinder reciprocating uniform linear motion into rotary pneumatic device or swing cylinder pneumatic device;
For regulating valves, plastic film pneumatic device is generally used; For the valves used in natural gas pipelines, pneumatic devices are usually used, because it is very easy to complete the automatic control system.
Choose pneumatic valve common problems:
1, to close and open the valve channel for direct valve, fluid density is small, usually as close and open medium valve. Because of the bumpy flow, fluid density is higher than other valves, down closing valve (cut-off valve, plunger valve) less choice. When the allowable fluid density is high, you can choose to close the valve.
2, the control of the total flow of the valve usually choose easy to adjust the total flow of the valve as the valve to adjust the total flow. Downward-closing valves (e.g., globe valves) are suitable for this purpose because their high-pressure gate valve specifications are positively related to the travel schedule of the closing member.
Rotary valves (plug valves, disc valves, valves) and twisted oil plate valves (gripper valves, pneumatic butterfly valves) can also be operated with throttle valves, but usually only in the more limited valve diameter category.
Globe valve disc gate valve cross laser cut ring high pressure gate valve. It can better manipulate the total flow only when it is close to the off area, so it is not usually monitored by flow.
3, according to the commutation interception must, this kind of valve can have three or more than three safety channels. Plug valves and valves are more suitable for this purpose.
Therefore, most of the valves used for commutation closure choose one of these valves, in some cases, other types of valves, only 2 or more than two kinds of valves moderate connection with each other, but also can be used for commutation separation.
4, containing floating particles in the medium application valve. When there are floating particles in the medium, * suitable for rolling along the surface and have the actual effect of scrubbing the valve.
If you turn off the components and divide the high-pressure gate valve vertically, you are likely to catch particles. Therefore, this type of valve is only suitable for basically cleaning media, unless the surface material can be inserted particles.
Valves and high pressure gate valves scrub the protrusions during the switching process, so they are suitable for media containing floating particles. Whether in crude oil, chemical plants or traditional pipeline systems, the use, frequency and service of valves are constantly changing.
Operation or removal of even low leakage, the key, the main equipment is the valve, the ultimate control of the pipeline is the valve, valve service and stability in various industries are all the same.