Pneumatic knife gate valve - Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Pneumatic knife gate valve

  • [Valve model]: PZ673H，PZ673F，PZ673Y
  • [Diameter specification]: DN50-DN1000
  • [Structure]: Wafer type
  • [Valve body material]: Ductile iron, cast steel, stainless steel
  • [Nominal pressure]: PN10、PN16
  • [Applicable temperature]: ≤350℃
  • [Application Scope]: Pulp, sewage, coal slurry, ash, slag water mixture
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  • Pneumatic knife gate valve

Product features

The pneumatic knife gate valve is composed of a stainless steel wafer type knife gate valve and a pneumatic actuator. The bottom of the gate plate is a knife shaped oblique notch, which has a good shearing effect, so that the valve will not be blocked by media when it is closed, and can scrape off the adhesive on the sealing surface, automatically remove debris, which is most suitable for slurry, powder, fiber and other fluids that are difficult to control for flow opening and closing. The pressure range of PZ673H pneumatic wafer type knife gate valve is generally within 1.0MPa, and the temperature is below 120 ℃. Special materials can be used instead of high temperature, which is widely used in papermaking, petrochemical, mining, drainage, food and other industries. There are a variety of valve seats to choose from, and electric or pneumatic actuators can be equipped according to the needs of field control to realize the automatic operation of valves.
 
Structure diagram of pneumatic wafer type knife gate valve
Structure Diagram of Pneumatic Clamping Knife Gate Valve Structure Diagram of Pneumatic Lug Knife Gate Valve

Performance characteristics of pneumatic knife gate valve:
 
1. Double clip structure, small size and light weight; The completely open channel can prevent the medium from depositing in the valve.
2. In the process of opening and closing, the ram and sealing surface adopt special design, with less friction and durability.
3. The upper seal adopts the upper cover structure, so that the upper seal is changed from a large rectangular seal to a small circumferential seal, and the sealing performance is greatly improved.
4. After the sealing device is installed on the top of the hand wheel, all the moving parts of the valve can be kept in a closed state, and the screw rod drive of the gate and valve rod will not be jammed due to the drying of lubricating oil.
5. The ram has the function of knife switch, which can effectively cut off various sundries in the medium

technical parameter

Nominal diameter DN50-1000mm
body material Cast iron, ductile iron, cast steel, stainless steel
Nominal pressure PN1.0、1.6 MPa
Connection type Wafer type
control mode Pneumatic control (air driven)
Air supply pressure Double acting: 2-8bar/single acting: 4-8bar
Applicable media Pulp, sewage, coal slurry, ash, slag water mixture

Operating principle of pneumatic knife gate valve:
 
The pneumatic knife gate valve can be generally divided into single action and double action according to the action form of the pneumatic actuator. Double action principle (air to open, air to close): that is, two position control for opening and closing of valves; Single action principle (air on reset, air off reset): spring reset function, when the circuit and air circuit are cut off or failure occurs, the valve automatically opens or closes.

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.