普洱夜总会旗袍美女

三明附近想过夜电话联系

Pneumatic low temperature butterfly valve

  • [valve model]: Pneumatic low temperature butterfly valve
  • [diameter specification]: DN50~DN500
  • [structural form]: Middle line type, three eccentricity
  • [valve body material]: stainless steel
  • [nominal pressure]: PN6、PN10、PN16
  • [applicable temperature]: -40℃~196℃
  • [application scope]: Liquid helium, liquid hydrogen, liquefied natural gas, liquid nitrogen, liquid oxygen
Consult manufacturer Online Message
  •  Pneumatic low temperature butterfly valve

Product features

Pneumatic low temperature butterfly valve is mainly suitable for medium temperature between - 40 ℃ and -40 ℃ -In the low temperature condition of liquid nitrogen (cryogenic) medium such as 196 ℃, in order to ensure the safe and reliable operation of low temperature butterfly valve at low temperature, the valve parts have been cryogenic treated before finishing, and the valve cover adopts long neck structure, which aims to protect the function of the stuffing box, make the stuffing box far away from the low temperature, and ensure the sealing effect of the packing. The medium used in pneumatic low temperature butterfly valve is usually liquid helium, liquid hydrogen, liquefied natural gas, liquid nitrogen, liquid oxygen and other low-temperature fluids.
 Structure diagram of pneumatic low temperature butterfly valve
Features of pneumatic low temperature butterfly valve:
 
The material of pressure parts of pneumatic low temperature butterfly valve can withstand the expansion and contraction caused by the change of medium temperature, and the structure of sealing part will not produce permanent deformation when the temperature changes. The elongated upper valve cover adopts the double seal of the joint valve shaft, which ensures the long-term stability of the sealing packing at low temperature, so it is widely used in the control of cryogenic fluid processes such as LNG and air separation industry.

technical parameter

Nominal diameter DN50~DN500(MM)
Nominal pressure PN0.6、1.0、1.6MPa
Connection mode Clamp type, flange
Driving form Pneumatic drive (air source, Compressed air 4 ~ 7bar
Applicable temperature -40℃~196℃
body material CF8、CF8M、CF3M
Sealing material PEFE、PPL、304、316
Valve cover type Standard integrated

Optional accessories for pneumatic low temperature butterfly valve:
Driving method 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. 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.