simple structure Pneumatic Butterfly Valve  

1.Summary

  Pneumatic valve is a pneumatic valve angle of 90 °, typically used to control high flow, low dropout fluids. Butterfly is characterized by small size, simple structure, small space required for installation, and low cost. Since the smooth flow path valve resistance coefficient, the higher the flow obtained is therefore suitable for high viscosity, with the fibers, particles and the sediment containing the regulation and pulp medium flow.
Pneumatic control valve can be chose different materials lining body and different materials valve plate according to different media.
According to the requirements of the production process, there are wafer centre line butterfly valve, flanged full-lining butterfly valve, triple offset metal-sealing butterfly valve, air butterfly valve.
The butterfly valves above all could open 90 °, are characterized by approximately equal percentage, large flow capacity, greatly exceeds its rated value of the same caliber Kv other valves.
Pneumatic butterfly valve is composed by butterfly valve and pneumatic actuator, which can automatically adjust the temperature, pressure and flow rate of the medium. Pneumatic triple eccentric metal sealing butterfly valve could shut off and achieve zero leakage.

   Pneumatic Butterfly Valve Models
(Equipped with Our BELL BGT Series Pneumatic Actuator )

BGTWA:Pneumatic wafer centre line butterfly valve

BGTWF:Pneumatic flanged full-lining butterfly valve,

BGTWSY:Pneumatic triple offset metal-sealing butterfly valve

BGTWK:Pneumatic air butterfly valve.

Pneumatic Butterfly Valve Models
(Equipped with Our BELL BAW Series Pneumatic Actuator ):

BAWWA:Pneumatic wafer centre line butterfly valve

BAWWF:Pneumatic flanged full-lining butterfly valve,

BAWWSY:Pneumatic triple offset metal-sealing butterfly valve

BAWWK:Pneumatic air butterfly valve.

BAW series pneumatic actuator is with large output torque, generally used for larger diameter valves.
If pneumatic actuator is equipped with solenoid shut-off valve, the butterfly valve could be used for shutting off; if pneumatic actuator is equipped with positioner, the butterfly valve could be used for adjusting medium.

2.Commissioning Instructions 

Before using, please inspect whether air pressure in the spot is suitable for pneumatic actuator, and use it according to matched instruction of pneumatic actuator.

3.BGTWA,BAWWA Pneumatic wafer centre line butterfly valve

BGTWA Pneumatic wafer centre line butterfly valve, Equipped with BELL BGT Series Pneumatic Actuator
BAWWA Pneumatic wafer centre line butterfly valve, Equipped with BELL BAW Series Pneumatic Actuator
Wafer butterfly valve with solenoid valve controlled pneumatic actuator can be used for on-off type valve.
Feature: small size, light weight, reasonable structure, easy to install, usually applied to control a large low-pressure fluid flow, as well as the regulation of solid powder, closure and so on.

Butterfly valve's body is divided into type A and type LT

"LT" type valve structure, performance materials and components are the same with "A" type’s, except that the "A" type can be wafer connected between two pipe flanges by stud or extended hex bolt. Except can be connected between two pipes by two sets hex bolt, “LT" type also can be mounted on the ends of the pipe used as a drain valve, but need to specify in the contract.

4.Feature

1. small, light, easy installation and maintenance.
2. simple structure, compact, 90 °swivel open and close rapidly, small operating torque, energy saving.
3. the opening and closing times can be up to tens of thousands of times, long service life.
4. flow characteristics tend to be linear, with better performance.
5. completely sealed, zero gas leak test.
6. different materials could be applicable for a variety of media.

                     BGTWA Type                                           BGTWA Type

Performance