Pneumatic rubber sealing butterfly valves

Summary and characteristics

Pneumatic rubber sealing butterfly valve has the unique eccentric structure, and with good cut-off performance. It enable to make control and shut off.

Characteristic Features

1, The valve disc and seat sealing face contact with the circular cone surface, for this, it needs only small output torque to close the valve and is characterized for very high pressure drops;

2, In the case of high press drops or high temperature, we recommend stellite full surface of disc and seat ring.

3, It has good cut-off performance and can achieve VI for seat leakage.

Structure and principle

1.eccentric parts    2.limit parts    3.hand wheel    4.worm gear shaft

5.the handle      ver      8.worm gear      9.body       10.yoke

Action Principle

Through output shaft's movement of actuator to realize the valve stem (valve plug) revolving, thus make the valve's throttling area changed to realize controlling the fluid ‘s pressure, flow and temperature.

Actuator

1,Receiving pneumatic signals, the unit balances the force created when diaphragm is air-pressured through position-er and the force of compressed spring, so that the output shaft is controlled and placed at a set position.

2,Combined with Pneumatic Diaphragm type, Pneumatic Cylinder type.

3,Actuator                                                   

Characteristic Features

For the valve that combined with pneumatic cylinder actuator, also can select a manual handwheel to operate the valve while in special conditions like losing air supply.

The characteristics of the hand wheel are as follows:

Simple structure and compact size;

Kinds of series to match many types of valves;

There are two key ways which are separated by 90 degrees in the worm gear to satisfy customer’s requirements,

Established in 2012,Hangzhou Niuzhuo Valves Industrial Co., LTD. is a manufacturer and exporter that is concerned with the design, development and production of valves.
HZNZ is located in Hangzhou, with convenient transportation axxess.Covering an area of 13000 square meters, HZNZ now have about 100 employees, an annual sales figure that exceeds USD 7.7 million and are currently exporting 22% of our production worldwide.
All of our products comply with international quality standards and are greatly appreciated in a variety of diffrent markets throughout the world.
As a result of our high quality products and outstanding customer service, we have gained a global sales network reaching Korea , Thailand, Malaysia,Mid East and more.
If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.