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Shanghai Dongfeng pump valve factory is a professional manufacturer of electric control valve, pneumatic control valve, self operated control valve, temperature control valve, flow control valve and other products!
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130-5233-4444
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Company name: Shanghai Dongfeng pump valve factory

Address: 459 guchen Road, Baoshan District, Shanghai

Enterprise telephone: 021-60547555

Fax: 02555-476051

Mobile: 185-2135-0330

Contact person: Manager Hu

Website: http://expansecms.com/

Email: 792894571@qq.com

Electric bellows control valve

  • [valve model]: ZDSBWG
  • [diameter specification]: DN25~DN300mm
  • [structural form]: Through casting ball valve
  • [valve body material]: Cast steel (WCB), stainless steel (304, 316, 316L)
  • [nominal pressure]: PN16、PN40、PN64
  • [applicable temperature]: Bellows seal type - 40 ~ + 350 ℃
  • [application scope]: Applications of gas, heat transfer oil and high vacuum system
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  •  Electric bellows control valve

Product features

The valve stem can be sealed by electric bellows to prevent leakage. It is often used in the occasions with strict requirements for valve stem sealing, such as high vacuum occasion and nuclear industry.
 Structure diagram of electric bellows regulating valve
Features of electric bellows control valve:
 
The upper valve cover of the electric bellows control valve adopts the corrugated pipe seal structure, which can completely eliminate the possibility of the process medium leaking from the valve rod movement clearance, which is one of the remarkable characteristics of the bellows seal valve. Due to the deformation and outstanding anti-aging property of bellows components, this kind of control valve completely overcomes the shortcomings of packing seal valve, such as packing aging and temperature sensitivity. Secondly, the double sealing structure of bellows and packing is adopted, which has better safety and reliability. Therefore, it is widely used in the automatic control system of rare special media such as highly toxic, strong corrosive and radioactive.

technical parameter

valve body
Form Through casting ball valve    
Nominal diameter 25、32、40、50、65、80、100、125、150、200、250、300mm     
Nominal pressure PN16、40、64bar     
Flange standard GB / t9113, JB / t79, etc    
Materials Cast steel (WCB), stainless steel (304, 316, 316L), etc    
Upper valve cover Bellows seal type: - 40-350 ℃    
Valve cover form Bolt compression type    
Filling material V-type polytetrafluoroethylene (PTFE) filler, impregnated polytetrafluoroethylene asbestos filler, asbestos textile filler and graphite filler    
 
Valve assembly
Spool type Single seat, cage and sleeve valve core    
Flow characteristics Equal percentage characteristic and linear characteristic    
Materials Stainless steel, stainless steel stellite alloy, titanium and corrosion-resistant table metal, etc.      

Actuator of electric bellows regulating valve:
Main technical parameters Power supply voltage: 220w50 Hz, input signal: 4-20mA or 1-5v.dc output signal: 4-20ma.dc
Protection level: equivalent to IP55, flameproof sign: exd|| BT4, manual operation function: handle
Ambient temperature: - 25 + 70 ℃ ambient humidity: ≤ 95%

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.