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Pneumatic regulating ball valve

  • [valve model]: VQ647F,VQ647H
  • [diameter specification]: DN15~DN300
  • [structural form]: Type O, type V
  • [valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [nominal pressure]: PN16、PN25、PN40、PN64
  • [applicable temperature]: -40~450℃
  • [application scope]: Sewage, steam, liquid, oil, viscous fluid, slurry, etc
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  •  Pneumatic regulating ball valve

Product features

According to the structure, pneumatic regulating ball valve can be divided into pneumatic O-type regulating ball valve or pneumatic V-type regulating ball valve. It is mainly used with valve positioner. According to the control signal of 4-20mA input and output, the rotary opening of ball valve core can be controlled, and the proportional adjustment of pipeline medium pressure, flow, liquid level and other parameters can be achieved. The pneumatic V-type regulating ball valve has a special shape of V-notch, which can adjust the flow rate by changing the opening area in the middle, and can cut off the impurities in the fluid and close it. It is suitable for the control of pulp, mortar and viscous fluid.

Pneumatic V-type regulating ball valve
Pneumatic O-type regulating ball valve

Features of pneumatic regulating ball valve:
Pneumatic regulating ball valve can be divided into soft seal and hard seal according to sealing performance, and can be divided into adjustment type and cut-off type according to the regulation mode. The cut-off type can be divided into single acting and double acting type according to the action form. The regulating type is usually double acting type. The unique advantage of single acting type is that once the power source fails, the ball valve will automatically be in the closed or open position according to the requirements of the control system, so the products are widely used In electric power, petroleum, chemical industry, paper, textile, food, pharmaceutical, aerospace and other fields.  

technical parameter

Nominal diameter DN15~DN300(mm)
Nominal pressure 1.6、2.5、4.0、6.4MPa
Connection mode Flange type, clamp type, thread
Driving form Air source drive (compressed air 4-7bar)
temperature range
Soft seal: - 30 ~ 180 ℃; hard seal: - 40 ~ 450 ℃
Range of motion 0~90°
sealing material Enhanced polytetrafluoroethylene para polyphenylene metal seal
Applicable media Sewage steam , liquid Oil products Viscous fluid, slurry, corrosive medium, etc
body material Carbon steel, stainless steel 304, 316 、316L
control mode Intelligent regulation type (4-20mA analog signal) can be explosion-proof and can be equipped with manual device
 
Principle of pneumatic regulating ball valve:
 
The pneumatic regulating ball valve uses compressed air as the power source to drive the ball core to do 90 degree back and forth rotation action, so as to open and close the valve. It is used together with valve positioner. It can adjust the medium flow in different degrees according to the rotation angle and opening of the ball valve core. When the pneumatic actuator receives the signal from the control system, it will generate the corresponding thrust according to the control signal pressure, push the regulating mechanism to drive the valve core action, and complete the flow and pressure regulation of the medium in the pipeline. It has the characteristics of large rated flow coefficient, good sealing effect and sensitive adjustment performance.
Optional functions of pneumatic regulating ball valve:
Driving mode Compressed air (with handwheel)
Air supply pressure 0.4-0.7mpa
air connection G1/4"、G1/8"、G3/8"、G1/2"
ambient temperature -30~+70℃
Form of action
Single acting (spring return): air to close (b) - valve position open (FO) in case of gas loss; air open (k) - valve position close (FC) when losing air
Double acting (ventilation switch): air off (b) - valve unchanged in case of loss of air (FL); air open (k) - valve unchanged in case of loss of air (FL)
Optional Accessories Positioner, solenoid valve, air filter pressure reducer, retaining valve, travel switch, valve position transmitter, hand wheel mechanism, etc

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 (or product model) of the valve you selected, the required order quantity, packing requirements, delivery time, your company name, location and contact information of your company to 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. 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) For example, flange connection
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Supply voltage, air pressure
(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. 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. Please make sure that the order is in time for you.
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.