Electric hard seal butterfly 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 hard seal butterfly valve

  • [Valve model]: D943H，D973H
  • [Diameter specification]: DN50～DN1200
  • [Structure]: Three eccentric hard seal (wafer type, flange)
  • [Valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [Nominal pressure]: PN10、PN16、PN25、PN40
  • [Applicable temperature]: -40℃～450℃
  • [Application Scope]: Gas, water, gas, oil and corrosive medium
Consult the manufacturer Online Message
  • Electric hard seal butterfly valve

Product features

The electric hard seal butterfly valve adopts a three eccentric structure, and there is no friction transmission between the sealing surfaces. It has the characteristics of wear resistance, good mechanical performance, high temperature resistance, high pressure resistance, and long service life. It can be divided into wafer type and flange according to different connection methods, and can be used in many different pipelines and places with corrosive media. Electric hard seal butterfly valve seals are made of metal materials or other hard materials, such as stainless steel+hard alloy, which are widely used in chemical, environmental protection treatment, gas, oil, steam, water and corrosive media pipelines with medium temperature ≤ 550 ℃ for on-off or percentage adjustment!
 
 
Principle of electric hard seal butterfly valve:
 
The electric hard seal butterfly valve consists of an electric actuator and a metal seal butterfly valve. The valve is opened or closed by the power drive of the electric actuator. The valve rod drives the disc to rotate back and forth within the range of 0-90 °. It can also be equipped with intelligent regulating actuator according to the working conditions to adjust the opening of butterfly valve disc at will, so as to control the temperature, flow, pressure, liquid level and other parameters of the medium accurately. It can maintain good operation under high pressure and high temperature, relatively wear resistant, good mechanical property, and long service life, but its sealing performance is worse than that of soft sealed butterfly valve!

technical parameter

Nominal diameter DN50～DN1200(mm)
Nominal pressure PN1.0、1.6、2.5、4.0MPa
Connection mode Wafer type, flange connection
Sealing form Metal hard seal
supply voltage AC220V, AC380V (other customized DC24, etc.)
Action range 0～90°
body material Carbon steel, stainless steel 304, stainless steel 316
Workplace Water, gas, oil and corrosive medium, etc. (can be used in high-temperature and high-pressure situations)
temperature range Carbon steel: - 29 ℃~450 ℃ Stainless steel: - 40 ℃~450 ℃
control mode Switch mode (switch two position control), intelligent regulation type (4~20mA analog signal control)


Material of electric hard seal butterfly valve parts:
(The following materials are optional)
Valve body: cast iron, cast steel, stainless steel (304.316)
Butterfly plate: cast steel, alloy steel (hard chrome plated), stainless steel
Sealing ring: stainless steel, polylactide, anti-wear material
Valve rod: 2Cr13, 1Cr13 stainless steel
Packing: flexible graphite
 
Electric hard seal butterfly valve structure (flange type) Electric hard seal butterfly valve structure (wafer type)
Difference between electric hard seal butterfly valve and electric soft seal butterfly valve:
1. Soft seal is used in low pressure and normal pressure places, and hard seal can be used in medium and high pressure conditions.
2. Soft seal can be used in low temperature and normal temperature environment, while hard seal can be used in low temperature, normal temperature and high temperature environment.
3. Soft sealing butterfly valves are mostly of medium linear structure, while hard sealing butterfly valves are generally of single eccentric, double eccentric and triple eccentric structure.
4. The sealing performance of soft sealing butterfly valve is better than that of three eccentric hard sealing butterfly valve, but the three eccentric butterfly valve can maintain good sealing under high pressure and high temperature environment.
 
Advantages and disadvantages of electric hard seal butterfly valve and electric soft seal butterfly valve:

Hard sealing butterfly valve has a long service life, but its sealing performance is relatively worse than that of soft sealing.
The soft seal butterfly valve has the advantages of good sealing performance and the disadvantages of easy aging, wear and short service life.
Soft sealing butterfly valves are mostly suitable for opening, closing and regulating corrosive pipelines at normal temperature, while hard sealing butterfly valves are mostly used for heating, gas supply, gas, oil, acid and alkali and other environments.

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.