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Pneumatic knife gate valve

  • [valve model]: PZ673H,PZ673F,PZ673Y
  • [diameter specification]: DN50-DN1000
  • [structural form]: Clip on type
  • [valve body material]: Ductile iron, cast steel, stainless steel
  • [nominal pressure]: PN10、PN16
  • [applicable temperature]: ≤350℃
  • [application scope]: Mixture of pulp, sewage, coal slurry, ash and slag water
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  •  Pneumatic knife gate valve

Product overview

The pneumatic knife type gate valve is composed of stainless steel double clip knife gate valve and pneumatic actuator. The bottom of the gate is a knife type oblique cut, which has good shear effect, so that the valve will not be blocked by medium when it is closed. It can also scrape off the adhesion on the sealing surface and automatically remove the impurities. It is most suitable for the flow opening and closing of slurry, powder, fiber and other difficult to control fluid. The pressure range of pz673h pneumatic double clip knife gate valve is generally used within 1.0MPa, and the temperature is below 120 ℃. High temperature can be replaced by special materials. It is widely used in papermaking, petrochemical, mining, drainage, food and other industries. With a variety of valve seats to choose from, and according to the field control requirements, equipped with electric or pneumatic actuators, to achieve automatic valve operation.
 
 Structure diagram of pneumatic double clip knife gate valve
Structure diagram of pneumatic double clip knife gate valve

Performance characteristics of pneumatic knife gate valve:
 
1. It adopts the double clip structure, small volume and light weight; the fully open channel can prevent the medium from depositing in the valve.
2. In the process of opening and closing, the ram and sealing surface are designed with less friction and durable.
3. The sealing area of the upper rectangular cover is greatly improved.
4. After installing the sealing device on the top of the hand wheel, all the moving parts of the valve can be closed, and the screw drive of the gate and valve rod will not be jammed due to the drying of lubricating oil.
5. The gate has the function of knife switch, which can effectively cut off all kinds of 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 form Clip on type
control mode Pneumatic control (air drive)
Air source pressure Double acting: 2-8bar / single acting: 4-8bar
Applicable media Mixture of pulp, sewage, coal slurry, ash and slag water

Operating principle of pneumatic knife gate valve:
 
According to the action form of pneumatic actuator, pneumatic knife gate valve can be divided into single acting and double acting. Double action principle (air on, air off): two position control of valve opening and closing; single action principle (air on and off reset): spring reset action, the valve will open or close automatically when the circuit and gas circuit are cut off or fault occurs.

Quotation process

Valve price:

Due to the different requirements of order quantity, packaging and delivery mode, as well as the fluctuation of valve raw material price, the valve price will be greatly different. Therefore, the price of our products is not indicated on the website. Please understand.

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

Quotation process:

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

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

3. Specific matters to be agreed: delivery time, special requirements, etc.

Ordering instructions

1、 If the customer has special requirements for the product, the following instructions shall be provided in the order contract:
(1) Valve body material (such as: plastic, cast steel, stainless steel...)
(2) Connection type (e.g. flange, thread, clamp...)
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Supply voltage, air pressure
(6) Fluid properties (including nominal pressure, temperature, viscosity or acidity or alkalinity)
2、 The company configures all kinds of 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 shall correctly explain the meaning and requirements of the valve model (for details, refer to the description of valve model preparation), and sign the contract under the condition that both parties understand and agree.
4、 After the customer tells the required valve model, specification, quantity and delivery time and place, 20% of the total amount of deposit or full payment shall be timely remitted to our company's account, and the rest shall be remitted before delivery, so as to arrange delivery in time.
5、 After confirming the purchase, our company carries on the production in strict accordance with the delivery date. According to the different types and quantities of orders, the product processing cycle is generally 3 to 30 days, 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 order as early as possible.
6、 According to the needs of customers, our company provides network distribution services, delivering goods to the branches (offices) in major cities, and providing door-to-door delivery service. After the product acceptance, our company will provide after-sales service.
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