Electric ventilation 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 ventilation butterfly valve

  • [Valve model]: D941W
  • [Diameter specification]: DN50～DN1200
  • [Structure]: Medium line type (flange)
  • [Valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [Nominal pressure]: PN1、PN2.5、PN6、PN10
  • [Applicable temperature]: -40 ℃~+450 ℃ above
  • [Application Scope]: Industrial, metallurgical, flue gas dedusting, environmental protection and other pipelines
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  • Electric ventilation butterfly valve

Product features

Electric ventilation butterfly valve, also known as electric air volume regulating butterfly valve, is composed of angle travel electric actuator and butterfly valve. It is designed and manufactured with a new structural form of central line type disc plate welded with short structural steel plate. It is suitable for two position cut-off. The valve body is made of the same material into a sealing ring, and its applicable temperature depends on the valve body material selection. The nominal pressure is ≤ 1.0MPa. It is mainly used in industry, metallurgy Flue gas dedusting, environmental protection and other pipelines are used as gas medium to regulate flow or cut off. Not suitable for high temperature, high pressure, corrosion resistance, wear resistance and other industries.

Performance characteristics of electric ventilation butterfly valve:
 
1. Simple structure, large diameter, light weight and convenient operation.
2. Small driving torque, flexible opening and closing, convenient operation.
3. It can be installed in multiple stations without being affected by media.
4. Oil seal retainer ring is set on the valve body, there is no visible gap between the sealing pairs, and the leakage rate is small.
5. The expansion clearance between the butterfly plate and the valve body is large, which can effectively prevent the jamming caused by thermal expansion and contraction.
Structure diagram of electric ventilation butterfly valve

Operating principle of electric ventilation butterfly valve:
 
The electric ventilation butterfly valve inputs the power signal from the electric actuator, and uses the voltage to drive the disc plate to rotate freely within 90 ° to achieve the opening, closing or adjustment of the medium flow. It is especially suitable for flow regulation and pressure control in low pressure places such as air or other gases with low pressure. In addition, it is also widely used in high temperature gas and corrosive medium conditions.
 
Actuator of electric ventilation butterfly valve:
Control mode: electric control (power driven)
Medium temperature: - 40 ℃~+450 ℃ (steel plate roll welding),+450 ℃ above (stainless steel plate roll welding)
Corner range: 0-90 degrees
Flow characteristics: approximate percentage
Flange standard: GB/T9115-2000 Steel pipe flange welding standard
Actuator: adjustable angle travel series electric actuator
Control mode: common switch type (passive contact switch type), regulating type (input/output 4-20mA)
Performance index of electric ventilation butterfly valve:
 
Item: Indicator value
Basic error%: ± 2.5
Backlash%: 2.0
Deadband%: 3.0
Constant point deviation%: ± 2.5
Rated travel deviation%:+2.5
Allowable leakage 1/h: 2 × 10-2 × rated capacity of valve

technical parameter

Nominal diameter DN50～DN1200
Nominal pressure PN0.1、0.25、0.6、1.0Mpa
Connection type Flange type
Valve body structure Type A
Test pressure Seal 0.15Mpa, shell 0.11Mpa
Flow characteristics Linear/equal percentage characteristic
Sealing form Open type, rear entry type (applicable to ultra-high temperature), sealed type (applicable to normal temperature)
Applicable media Dusty gas, air, gas, high-temperature flue gas

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.