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Stainless steel pneumatic stop valve

  • [valve model]: J641W,J641H,J641Y
  • [diameter specification]: DN50~DN300
  • [structural form]: Straight through
  • [valve body material]: Cast steel, stainless steel, chromium molybdenum steel, chromium molybdenum vanadium steel
  • [nominal pressure]: PN16-PN160
  • [applicable temperature: -29℃-550℃
  • [application scope]: Environmental protection, petroleum, chemical industry, electric power industry, etc
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  •  Stainless steel pneumatic stop valve

Product overview

Stainless steel pneumatic stop valve (j641w-16p) has the characteristics of short opening and closing stroke, fast speed, reliable sealing and static opening and closing. It is mainly composed of flange stainless steel stop valve, pneumatic actuator and other air source accessories. It is an automatic control system that can open and close the valve by air source drive. With the help of compressed air, remote and centralized control can be realized, and the opening and closing speed of pneumatic stop valve is fast Therefore, it is usually used in the occasions with high frequency and fast switching time, or in the special working condition space which is not suitable for manual control, especially suitable for the process pipeline without power supply driving source in the use place.
 Structure of stainless steel pneumatic stop valve
Structural drawing of stainless steel pneumatic stop valve
Advantages of stainless steel pneumatic stop valve:
 
1. Easy to operate, flexible, simple structure, easy to manufacture and maintain;
2. The working stroke is small and the opening and closing time is short; the sealing surface of the closing body (valve disc) and the valve seat is sealed by conical surface, with small closing force, erosion resistance and reliable sealing.
3. The valve seat can be a replaceable valve seat, which can be combined with the sealing surface material of the closing part to meet the working conditions and prolong the service life.

technical parameter

Nominal diameter DN50~DN300
Nominal pressure 2.5 4.0 6.4 16.0(Mpa)
Connection mode Flange type
control mode 7 MPa (0.7 MPa)
body material Cast steel, stainless steel, chromium molybdenum steel, chromium molybdenum vanadium steel
filler Reinforced flexible graphite
temperature range -29℃-550℃

Principle of stainless steel pneumatic stop valve:
 
The cylinder of pneumatic control device of pneumatic stop valve can be divided into single acting and double acting. Single acting cylindrical spring with reset has the function of automatic reset after losing air. That is, when the air is lost, the cylinder piston (or diaphragm) drives the cylinder push rod to return to the initial position of the cylinder (the original position of the stroke) under the action of the spring. The double acting cylinder has no return spring, and the push rod advance and retreat must depend on changing the inlet and outlet positions of air source. When the air source enters from the upper chamber of the piston, the push rod moves downward. When the air source enters from the lower chamber of the piston, the push rod moves upward.  

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) 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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