Pneumatic Cartridge Valve

The working principle of pneumatic plug valve: pneumatic plug valve is mainly composed of frame, gate, silk rod, nut and other parts, rotate the handwheel by hand to make the silk rod with silk rod nut and gate reciprocating movement along the horizontal direction, to achieve the purpose of opening and closing the gate.

Technical standard

1、Shell test and sealing test medium of the plug valve is water (with agent), paraffin or other suitable liquid with viscosity not greater than water.

2、Sealing vice is non-metallic seal of the plug valve, sealing shell test and requirements according to GB/T13927-92 D level.

3、Sealing vice is a metal sealing plug valve, sealing performance requirements, sealing test leakage is calculated according to 1 × DNmm / s, no sealing performance requirements do not do this test.

4, with electric, hydraulic, pneumatic device-driven cartridge valve, closed position adjustment, close 3 times according to the requirements of 1 and 3 shell and sealing test.

5、Plug valve cleanliness requirements according to the provisions of JB/T7748.

6、Static pressure life test.

7, the number of times the plug valve static pressure life test according to the provisions of other technology to be in accordance with the provisions of JB / Z 234

Functional characteristics：
Pneumatic plug valve is a powder, grain material, granular material and small pieces of material flow or delivery of the main control equipment, widely used in metallurgy, mining, building materials, food, chemical and other industries to control the flow changes or cut off. Advantages of pneumatic plug valve simple structure, flexible manipulation, light weight, no jamming, especially suitable for all kinds of solid materials and 50mm or so block, lump material conveying and flow adjustment, installation is not restricted by the angle, easy to operate, can be adjusted at any time scale. Structure features simple structure, flexible operation, light weight, no jamming, fast cutting, especially suitable for all kinds of non-viscosity solids, powder and less than Φ10mm granular material, grain material conveying and flow regulation, installation is not restricted by angle, easy to operate, can adjust the scale at any time. Mainly used in building materials, metallurgy, mining, electric power, chemical industry, glass, light industry, grain and other industries, such as the top of the warehouse, the bottom of the warehouse and import and export. It is the ideal equipment for controlling the flow with large changes, frequent start-up and cut-off.

Pneumatic single and two-way plug valve, also known as manual knife gate valve, knife gate valve it is a gate and valve seat always close contact sealing valve, the principle is that the gate is open on the size of a pass size of the round mouth, through the gate opening and closing the gate makes the gate on the round mouth with the pass diameter to do detachment and coincide with the action. The advantage of this valve is that the valve body diameter without grooves, the media will not be blocked blockage, and has a full diameter circulation characteristics, the sealing structure can be divided into soft seal, hard seal structure. Penetrating knife gate valve is a structure, good workmanship, compact structure and so on, the sealing valve seat for the movable structure design, with anti-wear and automatic compensation function, thus long life. In the process of closing and opening the valve seat and gate has been close to the movement, so that the valve opening and closing force is stable, and has the characteristics of cutting off the medium.