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Pneumatic flange gate valve

  • [valve model]: Z641H,Z641W
  • [diameter specification]: DN50~DN600
  • [structural form]: Straight through
  • [valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [nominal pressure]: PN16、PN25、PN40、PN64
  • [applicable temperature]: -29℃~550℃
  • [application scope]: Industry, water, steam, oil, sewage treatment
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  •  Pneumatic flange gate valve

Product overview

Z641h pneumatic flange gate valve is mainly composed of flange cast steel gate valve and pneumatic actuator. It is an automatic control valve driven by compressed air of actuator. It has two action modes of air opening and air closing. Pneumatic flange gate valve can be equipped with electric or pneumatic feedback device to send the valve opening and closing status information, which can realize remote control, centralized control and automatic control. The flange pneumatic cast steel gate valve adopts double-layer cylinder structure with buffer mechanism. Compared with single cylinder pneumatic gate valve, the lifting force is doubled, which can effectively reduce the speed, reduce the wear of valve plate sealing surface and valve body sealing surface caused by downward impact of piston when closing the valve, and also can avoid the phenomenon of gate stuck.
 
Performance Specification for pneumatic flanged gate valves:
Test pressure (MPA): 1.62.54.06.4
Strength test: 2.43.756.09.6
Sealing test: 1.762.754.47.04
Low pressure sealing test: 0.6MPa
Ambient temperature: - 20 ~ + 60 ℃
Relative temperature: ≤ 90% (at 25 ℃)
Protection grade: IP55 for outdoor type and explosion-proof type (IP67 can be customized)

Advantages of pneumatic flange gate valve:
 
one The valve rod and its surface are nitrided, which have good corrosion resistance, abrasion resistance and wear resistance.
 Structure diagram of pneumatic flange stop valve
Structure diagram of pneumatic flange stop valve
2. It can be used in various piping flange and flange sealing surface forms to meet various working conditions and user requirements.
3. Wedge type elastic gate structure is adopted, thrust bearing is set in medium and large diameter, friction force is small, and impact manual is equipped, opening and closing are easy.
4. The gate and valve seat are wear-resistant, high-temperature resistant, corrosion-resistant, scratch resistant and have long service life.
5. The material of valve body is complete. Packing and gasket can be selected according to actual working condition or user's requirement. It can be applied to various pressure, temperature and medium condition.

Principle of pneumatic flange gate valve:
 
The upper part of cylinder head is equipped with pneumatic manual conversion device. Turn the change-over handle clockwise to the "pneumatic" positioning hole for positioning, and the gate valve is in the pneumatic operation state; on the contrary, lift the transfer handle anticlockwise to the "manual" positioning hole, and the gate valve can be operated manually. The change direction of handle with bevel gear is opposite. When the manual valve is turned clockwise, it is the same as the manual valve. The bevel gear rotates the opposite.  

technical parameter

Nominal diameter DN50~DN600(mm)
Nominal pressure National standard pn1.6, 2.5, 4.0, 6.4, 10.0MPa
Connection mode Flange type
control mode Pneumatic control (air drive)
temperature range -29℃~550℃
Air supply pressure Double acting: 2-8bar / single acting: 4-8bar
body material Cast steel, stainless steel 304316l
Manual function Can be equipped with handwheel

Quotation process

Valve price:

Due to the different requirements of order quantity, packaging and delivery mode, as well as the fluctuation of valve raw material price, the valve price will be greatly different. Therefore, the price of our products is not indicated on the website. Please understand.

If you select a valve product on this website, if you need to know the price or ask for relevant technical information, please contact us. We will reply immediately, and according to your requirements, we can select the right valve products for you, so that your purchasing process is easy and pleasant.

Quotation process:

1. Please fax the name of your company, the name of your company and the place of delivery, the name of your company and the place of delivery 021-36311208 Or telephone number: 021-60547555。

2. After receiving the customer's purchase list, our company will provide customers with valve quotation "price list", model selection "valve model" and technical guidance as soon as possible.

3. Specific matters to be agreed: delivery time, special requirements, etc.

Ordering instructions

1、 If the customer has special requirements for the product, the following instructions shall be provided in the order contract:
(1) Valve body material (such as: plastic, cast steel, stainless steel...)
(2) Connection type (e.g. flange, thread, clamp...)
(3) Nominal diameter, pipe size
(4) Ambient temperature range
(5) Air pressure, supply voltage
(6) Fluid properties (including nominal pressure, temperature, viscosity or acidity or alkalinity)
2、 The company configures all kinds of driving devices according to the special requirements of customers. (electric control, pneumatic control)
3、 If the customer provides the determined valve type and model, the customer shall correctly explain the meaning and requirements of the valve model (for details, refer to the description of valve model preparation), and sign the contract under the condition that both parties understand and agree.
4、 After the customer tells the required valve model, specification, quantity and delivery time and place, 20% of the total amount of deposit or full payment shall be timely remitted to our company's account, and the rest shall be remitted before delivery, so as to arrange delivery in time.
5、 After confirming the purchase, our company carries on the production in strict accordance with the delivery date. According to the different types and quantities of orders, the product processing cycle is generally 3 to 30 days, and the specific delivery time is subject to the contract. In order to ensure that the goods you ordered are in place in time, please order as early as possible.
6、 According to the needs of customers, our company provides network distribution services, delivering goods to the branches (offices) in major cities, and providing door-to-door delivery service. After the product acceptance, our company will provide after-sales service.
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Shanghai Dongfeng pump valve factory all rights reserved sales hotline: 130-5233-3444 HTML XML Address: 459 guchen Road, Baoshan District, Shanghai, Dongfeng Farm, Chongming District, Shanghai Hu ICP Bei 17014291-6