Electric bellows control valve - Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Electric bellows control valve

  • [Valve model]: ZDSBWG
  • [Diameter specification]: DN25～DN300mm
  • [Structure]: Through cast ball valve
  • [Valve body material]: Cast steel (WCB), stainless steel (304, 316, 316L)
  • [Nominal pressure]: PN16、PN40、PN64
  • [Applicable temperature]: Bellows sealed type - 40~+350 ℃
  • [Application Scope]: Gas, heat transfer oil and high vacuum system
Consult the manufacturer Online Message
  • Electric bellows control valve

Product features

The electric bellows seal regulating valve uses bellows as the valve stem sealing element, which can make the valve stem free of leakage, so as to prevent leakage of radioactive substances or valuable substances, or maintain a high vacuum. It is often used in occasions with strict requirements for valve stem sealing, such as high vacuum occasions and nuclear industry.
Structure diagram of electric bellows control valve
Features of electric bellows control valve:
 
The upper valve cover of the electric bellows control valve adopts corrugated pipe seal structure, which can completely eliminate the possibility of process medium leaking out from the movement clearance of the valve stem, which is one of the remarkable features of the bellows seal valve. Due to the deformability and outstanding aging resistance of the bellows element, this type of regulating valve completely overcomes the weaknesses of the packing seal valve, such as packing aging and temperature difference 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 for rare special media such as highly toxic, corrosive, radioactive, etc.

technical parameter

valve body
Form Through cast 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 sealing type: - 40-350 ℃    
Valve cover type Bolt compression type    
Filler V-type polytetrafluoroethylene filler, asbestos filler containing impregnated polytetracyanoethylene, asbestos textile filler, graphite filler    
 
Inner valve assembly
Valve core type Single seat, cage type, sleeve type valve core    
Flow characteristics Equal percentage characteristic and linear characteristic    
Materials Stainless steel, stainless steel stackelite alloy, titanium and corrosion-resistant platform metal, etc.      

Actuator of electric bellows control valve:
Main technical parameters Power voltage: 220W50Hz Input signal: 4-20mA or 1-5V.DC Output signal: 4-20mA. DC
Protection grade: equivalent to IP55 Flameproof mark: Exd | | BT4 Manual function: handle
Ambient temperature: - 25+70 ℃ Ambient humidity: ≤ 95%

Quotation process

Valve price:

Due to the different requirements of order quantity, packaging and delivery method, and the fluctuation of the price of valve raw materials, the price of valves will have a big difference immediately, so our products have not been marked with prices on the website, please understand.

If you select a valve product on this website and need to know the price or obtain relevant technical information, please contact us. We will reply immediately, and can select appropriate valve products for you according to your requirements, so that your procurement process is easy and pleasant.

Quotation process:

1. Please fax the name (or product model) of the valve you selected, the required order quantity, packaging requirements, delivery time, your company name, your company location and contact information to 021-36311208 Or telephone: 021-60547555。

2. After receiving the customer's purchase list, our company will provide the customer with various services such as valve quotation "price list", model selection "valve model" and technical guidance as soon as possible.

3. Specific matters: delivery date, special requirements, etc.

Ordering Instructions

1、 If the customer has special requirements for the product, the following instructions must be provided in the order contract:
(1) Valve body material (such as plastic, cast steel, stainless steel...)
(2) Connection type (such as flange, thread, clamp, etc.)
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Power supply voltage, air supply pressure
(6) Fluid properties (including nominal pressure, temperature, viscosity or acid-base)
2、 The company configures various 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 should correctly explain the meaning and requirements of the model (see the description of valve model preparation for details), and sign the contract on the condition that both the supplier and the buyer have the same understanding.
4、 After the customer tells the required valve model, specification, quantity, delivery time and place, the deposit of 20% of the total amount or the full payment for goods shall be remitted to our company's account in time, and the rest of the payment for goods shall be remitted before shipment, so as to arrange shipment in time.
5、 After the purchase is confirmed, our company will produce in strict accordance with the delivery date. The product processing cycle is generally 3 to 30 days, depending on the type and quantity of the order, 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 try your best to order earlier.
6、 Our company provides network distribution services according to the needs of customers, delivering goods to the branches (offices) of customers in major cities, and implementing door-to-door delivery services. After the products are accepted, our company will provide after-sales service.