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Pneumatic vacuum ball valve

  • [valve model]: Guq high vacuum ball valve
  • [diameter specification]: DN15~DN100
  • [structural form]: Floating through
  • [valve body material]: 304, 316L stainless steel
  • [nominal pressure]: 1.3×10-7Pa~6×105pa
  • [applicable temperature]: -30℃~+232℃
  • [application scope]: Air and non corrosive gases, in vacuum system
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  •  Pneumatic vacuum ball valve

Product features

Pneumatic vacuum ball valve means that the working pressure of the valve is lower than the standard atmospheric pressure, that is, it is in the state of vacuum negative pressure, so it is usually also known as pneumatic negative pressure ball valve, which is mainly used for switch control or flow regulation in vacuum system. Pneumatic vacuum ball valve has high requirements for material and cleanliness, because it is necessary to ensure that there is no volatile matter in the vacuum, and after the seal strengthening treatment, it can effectively prevent the atmospheric environment impurities from entering the valve chamber to pollute the medium. The pneumatic vacuum ball valve can be installed at any position, which can not only be used in vacuum pipeline system, but also work normally under certain pressure.
 
Features of pneumatic vacuum ball valve:
 
1. It can work normally in high vacuum state, and can also be used in low-pressure system to achieve the advantages of both positive and negative pressure;
2. The pneumatic vacuum ball valve uses the air source pressure to control the valve, which has small driving torque and can open and close quickly in a short time;
3. It can be installed in any position, and has a variety of different connection modes, which can meet any complex situation;
4. Pneumatic high vacuum ball valve has simple structure and good sealing performance. Different materials and action forms can be used in different working conditions.
5. It is widely used in vacuum, dairy products, wine industry, bioengineering, food and chemical industry, which can effectively ensure the sealing performance of the valve.

technical parameter

Nominal diameter DN15~DN100(mm)
Pressure range 1.3×10-7Pa~6×105pa
Connection mode Looper flange, welding flange, quick fit type, thread
Valve body structure Three piece valve body
Driving mode Pneumatic control 0.4-0.7bar
working temperature -30℃~+232℃
Applicable media High purity and non corrosive gases
Form of action Single acting spring return (normally open, normally closed), double acting (air on and air off)
control mode Cut off type (switch two position control), regulation mode (4-20mA signal proportional regulation)

How to reduce the air leakage rate of pneumatic vacuum ball valve:
 
1. The pipeline connected with pneumatic high vacuum ball valve is evacuated, and the arc transition is adopted to make the gas path not blocked and unobstructed.
2. Dead corners should be avoided as much as possible. High precision polishing should be used to fully meet the applicable vacuum standards.
3. The internal and external surface polishing of pneumatic high vacuum ball valve is strengthened to make it difficult to absorb gas and achieve vacuum effect.
4. Reduce the volume of the vacuum system as much as possible and shorten the length of the pipeline system.
5. In addition to smooth surface, no scratch and no crack, the material used also requires low permeability and outgassing rate, good heat resistance, oil resistance, and certain strength, hardness and elasticity.  

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.