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Pneumatic cut-off ball valve

  • [valve model]: Q641F,Q641H
  • [diameter specification]: DN15~DN300
  • [structural form]: Floating through type O
  • [valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [nominal pressure]: PN16、PN25、PN40、PN64
  • [applicable temperature]: -40℃~450℃
  • [application scope]: Liquid, gas, steam, oil, corrosive medium
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  •  Pneumatic cut-off ball valve

Product features

Pneumatic O-type cut-off ball valve (on-off ball valve) is often used in situations requiring quick closing of pipeline medium flow. It is mainly composed of single acting pneumatic actuator and O-type ball valve. It has the function of emergency reset. It can quickly close the valve in case of sudden failure or loss of air source to prevent the medium from flowing in! The pneumatic O-type cut-off ball valve takes compressed air as the power source, and its execution speed is very fast. It has high-precision opening and closing function. It can cut off the fluid in the pipeline strictly, and can be controlled locally and remotely, which improves the safety of use.
Features of pneumatic cut-off ball valve:
 
1. The pneumatic O-type ball valve can select metal seal and soft seal structure according to different service requirements, so as to meet different working conditions.
2. The sealing performance is excellent, the structure is easy to seal, and the sealing capacity increases with the increase of medium pressure.
3. The valve rod seal of pneumatic O-type cut-off ball valve is reliable. As the valve rod is operated as if it is rotating without lifting, the packing seal of the valve rod is not easy to be damaged.
4. The fluid resistance is small. When the ball valve is fully opened, it forms a full channel with the pipeline, and the medium can flow through without resistance.
5. It can not only control gas, liquid and steam media, but also be used to control sewage and the nature of containing fiber.

technical parameter

Nominal diameter DN15~DN300(mm)
Nominal pressure PN1.6、2.5、4.0、6.4MPa
Connection form Flange type , thread connect
Driving mode Air source drive 0.4-0.7mpa (with manual device)
Spool form "O" type spherical valve core
Applicable temperature Soft seal ≤ 180 ℃, metal seal ≤ 450 ℃
Flow characteristics Quick opening characteristic
body material Carbon steel, stainless steel 304, 316 、316L
sealing material Reinforced polytetrafluoroethylene, para polyphenylene
Scope of application liquid Gas , steam, oil, corrosive media, etc
Form of action Switch type (switch two position cut-off) single acting (spring return function), double acting (air on and air off)

Operation principle of pneumatic O-type cut-off ball valve:
When the compressed gas of pneumatic O-type ball valve enters one end of the cylinder through solenoid valve or other controllers, the piston starts to move. Through the transmission mechanism such as piston rod, crank and vertical shaft, the ball core rotates 90 ° with the vertical shaft as the center, so that the ball valve changes from the open (or closed) state to the off (or open) state, so as to achieve the automatic control of the medium in the pipeline. The pneumatic switch ball valve has two G1 / 4 "screw holes on the side of the cylinder type actuator. The solenoid directional valve can be installed through the connecting plate. There are also two M10x1 screw holes on the top. Two travel switches can be installed through the support. The top of the center rotation can be operated manually with a wrench.
Parts material of pneumatic O-type cut-off ball valve:
Part name Material Science
Body bonnet WCB 304(CF8) 316(CF8M) 316L(CF3M)
sphere Nitriding treatment of 2Cr13 + three hundred and four three hundred and sixteen 316L
Stem 2Cr13 three hundred and four three hundred and sixteen 316L
seal ring Polytetrafluoroethylene (PTFE), reinforced polytetrafluoroethylene (PPL), para polyphenylene flexible graphite
Applicable media Liquid, gas, steam, oil and other corrosive media

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. 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 and pressure range
(5) Supply voltage, air pressure
(6) Nominal viscosity, pH, or pressure
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、 In order to arrange the payment in time according to the total amount and quantity of the valve before and after the delivery, and inform the customer of the delivery time and quantity of the remaining 20%.
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.