Pneumatic ball valve

Pneumatic ball valve introduction

Pneumatic ball valve is composed of ball valve and single acting or double acting pneumatic actuator with accessories:.positioner,handwheel, solenoid valve,limit switch,air regulator.
Specific categories of pneumatic ball valves are: stainless steel pneumatic ball valve,carbon steel pneumatic ball valve, PTFE PFA lined pneumatic ball valve, Ceramic pneumatic ball valve,PVC CPVC pneumatic ball valve, sanitary pneumatic ball valve,2 way pneumatic ball valve,3 way pneumatic ball valve, 4 way pneumatic ball valve,segmented pneumatic ball valve,pneumatic floating ball valve,pneumatic trununion ball valve,pneumatic cryogenic ball valve,pneumatic high temperature ball valve,pneumatic high pressure ball valve and other ball valves.
 

Pneumatic ball valve overview

Pneumatic ball valve is the ball valve with pneumatic actuators, pneumatic actuators of relatively fast speed, the fastest switching speed of 0.05 seconds/time, so usually also called pneumatic quick cut off the ball valve.Pneumatic ball valves are usually with various accessories, such as positioner,handwheel, solenoid valve,limit switch,air regulator.
, control box, etc., in order to realize the local control and remote centralized control, in the control room can control the switch of the valve, do not need to run to the field or high altitude and dangerous manual control, to a great extent, save the human resources and time and safety.

Pneumatic ball valve working principle

Pneumatic ball valves can be closed tightly with only a 90-degree rotation of the air source using pneumatic actuators.Completely equal body cavity for the medium to provide little resistance, through the flow.pneumatic ball valve is generally considered that the ball valve is most suitable for direct use.The main characteristic of the pneumatic ball valve is its compact structure, easy to operate and maintain, pneumatic ball valve is suitable for water, solvent, acid and natural gas and other general working medium, but also suitable for working conditions of poor medium, such as oxygen, hydrogen peroxide, methane and ethylene.The ball valve body may be integral or modular.
 

Pneumatic ball valve feature

1. The fluid resistance of pneumatic ball valve is small, and the resistance coefficient is the same as the pipe section of the same length.
2. Pnuematic ball valve is simple structure, small volume and light weight.
3. Compact and reliable, the sealing surface material of the pneumatic ball valve is widely used in plastic, good sealing, and has been widely used in the vacuum system.
4. Pneumatic ball valve is easy operation, fast opening and closing, rotation of 90° from full open to full close, convenient for remote control.
5. Pneumatic ball valve is easy maintenance, simple pneumatic ball valve structure, sealing ring is generally active, disassembly and replacement are relatively convenient.
6. When fully open or fully closed , the sealing surface of the pneumatic ball valve ball and seat is isolated from the media, which will not cause erosion of the valve sealing surface when passing through.
7. Pneumatic ball valve is wide range of applications, sizes from small to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied.
8. Because the pneumatic ball valve power source is gas, generally 0.2-0.8mpa pressure, relatively safe.Pneumatic ball valve if the air leakage, relative to hydraulic, electric, gas can be discharged directly, no pollution to the environment, at the same time has a higher safety.

Pneumatic ball valve classification

Floating ball pneumatic ball valve
Floating ball pneumatic ball valve is used for low and middle pressure medium. Under the action of medium pressure, the ball body can produce a certain displacement and press on the sealing surface of the outlet end to ensure the sealing of the outlet end.
The floating pneumatic ball valve has a simple structure and good sealing, but the ball bears all the load of working medium to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium.This structure is widely used in low and middle pressure ball valves.
 
Trunnion ball pneumatic ball valve
Trunnion ball pneumatic ball valve is used for middle and high pressure and big size pneumatic ball valve.The ball of the pneumatic ball valve is fixed and does not move after compression.Trunnion ball and ball valves are equipped with floating seats, subject to medium pressure, cause the seat to move so that the sealing ring is pressed tightly on the ball to ensure the sealing.Bearings are usually mounted on the upper and lower shafts of the spheroidal valves, with small operation twist, suitable for high pressure and large diameter valves.