Pneumatic Concentric Butterfly Valve
Summary:
Pneumatic concentric butterfly valve refers to the rotary center of the butterfly valve disc (that is, the valve shaft center) and the center of the valve body to form a straight line, which is connected with the pneumatic actuator in a straight way. According to the different connection mode , it can be divided into pneumatic clamping center line butterfly valve and pneumatic flange center line butterfly valve. The disc plate has automatic center function (up and down, about). Its sealing form is generally made of sealing structure, common sealing materials for rubber, polytetrafluoroethylene, etc.. The disadvantage is the butterfly plate and the valve seat open and close always place extrusion state, easy to scratch, produce the problem of fast wear.
| Pneumatic Concentric Butterfly Valve |
| Valve |
Pneumatic Concentric Butterfly Valve |
| Model |
D671X , D641X , D671F46 , D641F4 |
| Size |
DN50-1200mm |
| Connection |
Flange Type; Wafer Type |
| Nominal Perssure |
PN6,PN10,PN16,PN25MPa |
| Body Material |
Carbon Steel (WCB);Stainless steel(CF8,CF83,CF3,CF3M) |
| Working Temperature |
-40~+180ºC |
| Accessory |
Solenoid valve, positioner, limit switch,
manual mechanism |
| Application range |
Air, gas, dusty gas, hot and cold air, etc. |
| Features |
It has small flow resistance, large flow coefficient, light weight. Besides, it is suitable for large diameter. |
| Pneumatic Ventilation Butterfly Valve |
| Nominal Diameter |
DN50-1200mm |
| Rated Air Leak |
PN6,PN10,PN16MPa |
| Connection |
Flange Type,Wafer Type |
| Body Material |
Carbon steel (WCB)Stainless steel(CF8,CF83,CF3,CF3M) |
| Disc Material |
Carbon steel (WCB)Stainless steel(CF8,CF83,CF3,CF3M) |
| Working Temperature |
-40~+180ºC |
| Mode of Action |
Single action(spring return),Double Action(normal open&normal close) |
| Control Type |
Adjust type; On-off Type |
| Optional functions |
| Driving Type |
Compressed air (with handwheel) |
| Pressure |
0.4-0.7MPa |
| Air connection |
G1/4"; G1/8"; G3/8"; G1/2" |
| Environment temperature |
-30-+70ºC |
| Type of action |
Single action; double action |
| Optional accessory |
Positioner, solenoid valve, air filter pressure reducer, position retaining valve, limit switch, transmitter, handwheel mechanism, etc. |
The Appearance and Structure of Butterfly Valve:
Application Scope:
Due to the simple structure, it is no directional sealing restrictions. The center symmetry (type I) two-way sealing effect is the same, and the flow resistance is small, switching torque is small, pressure capacity is positioned as low and medium pressure. So it is widely used in the working condition under 1.6mpa. Installation is generally no direction of the requirements. It can be removed on-site maintenance, and do not have to completely open the valve can replace the seal.
Advantages:
1. The contact surface of the upper and lower two turns of the butterfly valve butterfly plate in pneumatic concentric butterfly valv is relatively wide. The valve has high friction and torque when switching.
2. Whether the valve is in the open state or closed state, butterfly plate, valve core sealing surface and the lower end of the seat are in the state of sealing compression, with excellent sealing performance.
Company Introduction:
Zhitai Valve Co., Ltd is a member of Valve Association of Longwan District, is located in Longwan Central Industrial Zone, Wenzhou City. It'a professional technology company integrated with development, manufacturing, sales, and after-sales services of valve actuators and and self-controlled valves. Presently, our main products include: pneumatic actuators, pneumatic valves and pneumatic control valves; electric actuators, electeic valves and eletric control valves; automatic control products. Our products are widely applied in natural gas, electricity, petroleum, chemical, metallurgical, construction, pharmacy, paper, printing and dying. Zhitai series actuators and valves are the best choice for automatic fluid control engineering and equipment manufacturing. We sincerely welcome customers from home and abrode to visit us for supervision, communication and cooperation. It's a great honor for us to cooperate with you.
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