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Pneumatic rubber lined butterfly valve

  • [valve model]: D671J,D641J
  • [diameter specification]: DN50~DN1200
  • [structural form]: Midline type
  • [valve body material]: Ductile iron, cast steel WCB, stainless steel 304, 316
  • [nominal pressure]: PN6、PN10、PN16
  • [applicable temperature]: -40℃~150℃
  • [application scope]: Gas, water, oil, corrosive medium, etc
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  •  Pneumatic rubber lined butterfly valve

Product features

Pneumatic rubber lined butterfly valve (pneumatic rubber environmental protection and anti-corrosion butterfly valve) refers to vulcanizing the rubber and valve body of butterfly valve into one by high temperature. According to the connection mode, it is generally divided into flange type and clip type. According to the use requirements of different working conditions, different sealing structures (full rubber lined butterfly valve and semi rubber lined butterfly valve) can be selected to ensure the pneumatic lining in different application places The rubber butterfly valve can be used normally. Pneumatic rubber lined butterfly valve not only has the characteristics of anti-corrosion, wear-resistant, non-toxic and mildew proof, but also has excellent sealing performance. With the application of chemical anti-corrosion synthetic rubber on butterfly valve, the usage of rubber lined pneumatic butterfly valve has been continuously improved.

 
Application range of pneumatic rubber lined butterfly valve:
 
Rubber lined pneumatic butterfly valve is suitable for the transportation of liquid and gas (including steam) and other media in various types of industrial pipelines, as well as the service conditions of weak corrosive fluid medium. It can be used for two position switch control or medium flow adjustment. It is widely used in food, medicine, chemical industry, petroleum, electric power, textile, papermaking and other places.
 
Performance characteristics of pneumatic rubber lined butterfly valve:
 
1. The rubber lining without pin ensures the complete isolation between the medium and the metal and improves the reliability of the product.
2. The wear resistance of the sealing surface is good (rubber wear resistance is seven times of copper).
3. It can be installed in any position and easy to maintain.
4. The sealing element can be replaced, the sealing performance is reliable, and the two-way sealing is zero leakage.
5. Rubber material has no toxicity, antibacterial and mildew resistance. The product price is one third of that of stainless steel valve.

Standard Specification for pneumatic rubber lined butterfly valve:
 
Design and manufacturing standard: GB / T 12238-2008
Structural length standard: GB / T 12221-2005
Connection flange standard: GB / T 9113
Pressure and temperature class: GB / T 12224-2005
Test and inspection standard: GB / T 13927-2008
Material of pneumatic rubber lined butterfly valve parts:
 Structure diagram of pneumatic rubber lined butterfly valve
Pneumatic rubber lined butterfly valve (clamp type) pneumatic rubber lined butterfly valve (flange type)

Valve body: cast iron, ductile iron, carbon steel, stainless steel
Butterfly plate: cast iron, ductile iron, carbon steel, stainless steel, completely covered with rubber or fluoroplastics
Stem: carbon steel, nickel phosphorus, stainless steel
Seat seal ring: NR, Cr, NBR, EPDM, FKM
Service temperature of sealing ring: nitrile rubber x ≤ 80 ℃, wear resistant rubber X6 ≤ 150 ℃, chloroprene rubber ≤ 120 ℃, fluororubber X7 ≤ 150 ℃;

technical parameter

Nominal diameter DN50~DN1200(mm)
Pressure rating PN0.6、1.0、1.6MPa
Connection mode Clamp type, flange connection
Driving mode Pneumatic control (air source driven, compressed air)
Applicable temperature All kinds of rubber: - 150 ℃
Amount of leakage Meet the standard (up to zero leakage)
Sealing structure Semi rubber lined seal and full rubber lined seal
Workplace Water, gas, oil and weakly corrosive fluid (at normal temperature and pressure)
control mode Switch two position mode (air on and gas off), regulating type (4 ~ 20mA analog signal control)

Performance Specification for pneumatic rubber lined butterfly valve:
Nominal diameter DN(mm) 50~1200
Nominal pressure PN(MPa) zero point six one one point six
Pressure test strength test zero point nine one point five two point four
Sealing test zero point six six one point one one point seven six
Airtight seal test zero point six zero point six zero point six
Form of action Double action (air on and air off), single action (normally closed, normally open)
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.