Double acting pneumatic operated gate valve

Introduction :

Double acting pneumatic operated gate valve is mainly composed ofgate valve and pneumatic actuator. It is an automatic control valve driven by the compressed air of the actuator.

Pneumatic flange gate valve can be equipped with limit switch to send valve switch status information, which can realize remote control, centralized control and automatic control

Performance Features

1. The valve stem and surface are treated by nitriding, which has good corrosion resistance, scratch resistance and wear resistance.
2. Various piping flanges and flange sealing surface forms can be used to meet various working conditions and user requirements.
3. The wedge-type elastic gate structure is adopted, the medium and large diameters are set with thrust bearings, the friction force is small, and it is equipped with an impact manual, which is easy to open and close.
4. The gate and valve seat are wear-resistant, high-temperature resistant, corrosion-resistant, scratch-resistant, and have a long service life.
5. The valve body has a complete variety of materials, and the packing and gasket can be reasonably selected according to the actual working conditions or user requirements, and can be suitable for various pressure, temperature and medium working conditions.

Material of main parts

Valve body/Bonnet/Wedge	Cast steel, stainless steel, alloy steel
Sealing surface of valve body and gate	Hard alloy
Stem	stainless steel
Stud	B7，B8, B16
cylinder	CS
piston	Cast aluminum alloy
Manual nut	bronze
Sealing ring	Spiral wound metal graphite gasket
Piston ring and collar	Oil-resistant rubber O-ring

Major Specification

Valve Size	DN40-DN700 , 1 1/2 '' -28''
Valve Pressure	PN 0.6 Mpa – 10.0 Mpa, Class 150 – class 600
Air Supply	2.5 bars -8 bars, Max 10 bars
Stroke	90mm-1030mm
Function	On-off, quick opening and closing, emergency shut-down
Suitable media	Water, oil, gas, air, particles, etc
Working temperature	-40 ℃ to 450 ℃
Ambient temperature	-20°C to 90°C
Optional accessories	solenoid valve, positioner, limit switch, filter, regulator, lubricator, etc

Installation, use and maintenance

1. Before installing the valve, carefully check whether the model meets the requirements for use.

2. The valve can be installed in any working position, but the convenience of maintenance and operation should be considered.

3. Before the valve is installed, the valve body should be tested for sealing; before the valve is installed, more than three no-load opening and closing tests should be performed. The gate switch of the pneumatic gate valve should be flexible, and various shafts must not be stuck.

4. During the installation process, the dirt in the hole, the sealing surface and the joint surface should be removed , and the connection bolts should be tightened evenly.

5. Sealing test, pneumatic and manual operation test shall be carried out after installation. At the same time, check whether the echo signal can be sent correctly when the valve is fully open or fully closed.

6. When the valve is in use, it is required to fully open and close the gate, and it is not allowed to open the gate valve as a throttle valve to adjust the flow rate. Otherwise, the sealing surface will be damaged under the scouring of the medium flow rate.

7. During the use of the valve, a small amount of lubricant should be added to the inner wall of the cylinder regularly ( 18 months).

8. During the use of the valve, regular inspection and maintenance should be carried out depending on the frequency of its actions. 9. The conversion handle on the pneumatic - manual conversion device is in the manual position, and pneumatic operation is absolutely not allowed .

FAQ:

1.    Q: Do you have any certification for Double acting pneumatic gate valves?

A: Yes, it is certified by ISO 9001 and SIL Level 3.

2.    Q: Can I get one free sample to try in my market?

A: Sorry, such sample should be charged firstly but can be returned after the regular orders .

3,  Q: Can you customize our design and logo for Double acting Pneumatic gate valves?

A: Yes, we can do ODM and OEM for all customers.

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