Pneumatic cut-off ball valve - Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Pneumatic cut-off ball valve

  • [Valve model]: Q641F，Q641H
  • [Diameter specification]: DN15～DN300
  • [Structure]: Floating straight through O-ring
  • [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

The pneumatic O-type cut-off ball valve (on-off ball valve) is often used in situations where quick closing of pipeline medium flow is required. It is mainly composed of single acting pneumatic actuator and O-type ball valve. It has the function of emergency reset, which can quickly close the valve in case of sudden failure or loss of air source to prevent medium from flowing in! The pneumatic O type cut-off ball valve uses compressed air as the power source, and is very fast in execution. It has a high-precision opening and closing function. It can tightly cut off the fluid in the pipeline, and can be controlled locally and remotely, improving the safety of use.
Features of pneumatic cut-off ball valve:
 
1. The pneumatic O-ring ball valve can be of metal seal and soft seal structure according to different use requirements to meet different working conditions.
2. The sealing performance is excellent, the structure is easy to seal, and the valve sealing capacity increases with the increase of medium pressure.
3. The valve stem of the pneumatic O-type cut-off ball valve is sealed reliably. Because the valve stem only operates as if it is rotating rather than lifting, the packing seal of the valve stem 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 basically flow through without resistance.
5. It can not only control gas, liquid and steam media, but also control sewage and fiber containing nature.

technical parameter

Nominal diameter DN15～DN300(mm)
Nominal pressure PN1.6、2.5、4.0、6.4MPa
Connection type Flange type , Thread connect
Drive mode Air source drive 0.4-0.7Mpa (with manual device)
Valve core form "O" type spherical valve element
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 polystyrene
Scope of application liquid 、 Gas , steam, oil, corrosive medium, etc
Form of action Switch type (switch two position cut-off) single action (spring return function), double action (air to open and air to close)

Operating principle of pneumatic O-type cut-off ball valve:
When the compressed gas of the pneumatic O-ring ball valve enters one end of the cylinder through the solenoid valve or other controllers, it pushes the piston to start moving. Through the piston rod, crank, vertical shaft and other transmission mechanisms, 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 closed (or open) state, achieving 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 actuator. The solenoid directional valve can be installed through the connecting plate. There are two M10X1 screw holes on the top. Two travel switches can be installed through the support. The top end of the center rotation can be manually operated with a wrench.
Pneumatic O-type cut-off ball valve Part material:
Part name Material Science
Body bonnet WCB 304(CF8) 316(CF8M) 316L(CF3M)
sphere 2Cr13+nitriding treatment three hundred and four three hundred and sixteen 316L
Valve rod 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 method, and the fluctuation of the price of valve raw materials, the price of valves will have a big difference immediately, so our products have not been marked with prices on the website, please understand.

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

Quotation process:

1. Please fax the name (or product model) of the valve you selected, the required order quantity, packaging requirements, delivery time, your company name, your company location and contact information to 021-36311208 Or telephone: 021-60547555。

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

3. Specific matters: delivery date, special requirements, etc.

Ordering Instructions

1、 If the customer has special requirements for the product, the following instructions must be provided in the order contract:
(1) Valve body material (such as plastic, cast steel, stainless steel...)
(2) Connection type (such as flange, thread, clamp, etc.)
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Power supply voltage, air supply pressure
(6) Fluid properties (including nominal pressure, temperature, viscosity or acid-base)
2、 The company configures various 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 should correctly explain the meaning and requirements of the model (see the description of valve model preparation for details), and sign the contract on the condition that both the supplier and the buyer have the same understanding.
4、 After the customer tells the required valve model, specification, quantity, delivery time and place, the deposit of 20% of the total amount or the full payment for goods shall be remitted to our company's account in time, and the rest of the payment for goods shall be remitted before shipment, so as to arrange shipment in time.
5、 After the purchase is confirmed, our company will produce in strict accordance with the delivery date. The product processing cycle is generally 3 to 30 days, depending on the type and quantity of the order, 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 try your best to order earlier.
6、 Our company provides network distribution services according to the needs of customers, delivering goods to the branches (offices) of customers in major cities, and implementing door-to-door delivery services. After the products are accepted, our company will provide after-sales service.