Electric flange 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 flange butterfly valve

  • [Valve model]: D941X，D941F46，D943H
  • [Diameter specification]: DN50～DN1200
  • [Structure]: Central line type, three eccentric (soft seal, hard seal)
  • [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, oil, steam, corrosive fluid
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  • Electric flange butterfly valve

Product features

The electric flange butterfly valve is composed of an electric actuator and a flange butterfly valve. According to different working modes and working conditions, it can be divided into switch control type and intelligent adjustment type (4~20mA analog signal control). The sealing forms include soft seal and hard seal. Working through the electric actuator, the rotating valve rod drives the disc plate to open and close within the range of 0-90 °. The structural performance of the electric flange butterfly valve is better than that of the wafer type butterfly valve, and the pressure resistance is generally high. The electric flange butterfly valve is recommended for the working conditions with the diameter of more than DN600.
Performance characteristics of electric flange butterfly valve:
 
1. An automatic butterfly valve that can be remotely controlled has the characteristics of a flange butterfly valve, and can be equipped with a wide range of butterfly valves;
2. The power supply is the driving energy of the electric butterfly valve. It has a wide range of power sources and applications, which saves human resources and is more efficient;
3. Easy to operate, easy to meet various control requirements, can be achieved by selecting different electric actuators, signal feedback, flow regulation, explosion-proof and other functions;
4. It can realize super miniaturization and mechanical self-locking, and can replace different sealing rings to meet different working conditions.
Executive standard of electric flange butterfly valve:

Design specification: GB/T 12238
Structure length: GB/T 12221
Flange connection: GB/T 9113
Test and inspection: GB/T 13927
Different electric actuators are selected according to different process requirements:
Switch type, signal feedback type, explosion-proof type, regulating type, etc
Structure diagram of electric flange butterfly valve
Operating principle of electric flange butterfly valve:
 
The electric flange butterfly valve uses the electric actuator to input a standard signal of 0-10 mA, and the motor unit drives the angular torque of the gear worm to drive the disc to rotate. When the valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated through the valve is very small, so it has good flow control characteristics. The electric flange butterfly valve has two sealing types: elastic seal and metal seal. For elastic sealing valve, the sealing ring can be embedded on the valve body or attached to the periphery of the butterfly plate. Metal sealed valves generally have longer service life than elastic sealed valves, but it is difficult to achieve complete sealing. The metal seal can adapt to higher working temperature, while the elastic seal has the defect of temperature limitation. If the electric flange butterfly valve is required to be used as flow control, the main thing is to correctly select the size and type of the valve.

technical parameter

Nominal diameter DN50～DN1200(mm)
Nominal pressure PN1.0、1.6、2.5、6.4MPa
Connection type Flange connection
body material Cast iron, cast steel, stainless steel, chrome molybdenum steel, alloy steel
sealing material Rubber, PTFE, PPL, stainless steel, polylactide, anti-wear materials
Action range 0～90°
Leakage According to GB/T4213-92, 10-4 of Kv, soft seal (zero leakage)
Applicable media Water, steam, oil, acid corrosive medium, etc
temperature range Soft seal: - 29 ℃~180 ℃; Hard sealing: - 40 ℃~550 ℃

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.