Dimensions of WCB pneumatic knife gate valve

Pneumatic knife gate valve, also known as pneumatic knife type gate valve, is a valve driven by compressed air. Pneumatic knife type gate valve is simply controlled by a pneumatic actuator to open and close the valve. It can be divided into two parts, the upper part is the pneumatic actuator and the lower part is the valve. This type of valve should generally be installed horizontally in pipelines.

Knife type gate valves have the advantages of simple and compact structure, reasonable design, lightweight and material saving, reliable sealing, easy and flexible operation, small volume, smooth channel, low flow resistance, light weight, easy installation, and easy disassembly. They completely solve the difficult problems of heavy weight, large flow resistance, large area, and difficult installation of ordinary gate valves, flat gate valves, globe valves, regulating valves, butterfly valves, ball valves, etc. They can replace general cut-off valves and regulating valves and can work normally under working pressure of 1.0MPa-2.5MPa and operating temperature of -29-550 ℃.

The gate of the knife gate valve has a shearing function, which can scrape off the adhesive on the sealing surface and automatically remove debris. The stainless steel gate can prevent sealing leakage caused by corrosion.

Knife type gate valves are made in two forms: concealed stem and exposed stem according to different diameters (concealed stem DN50-900mm, exposed stem DN50-900mm).

The connection forms of knife type gate valves include clamp type and flange ear type, and the seals include metal to metal hard seal, metal to polyurethane, and reinforced polytetrafluoroethylene soft seal.

Knife type gate valves can be divided into manual (handwheel, manual zipper), worm gear transmission (spur gear transmission, bevel gear transmission), pneumatic, electric, hydraulic, etc. according to the transmission mode;

Knife gate valves can be divided into manual control, pneumatic control, electromagnetic control, and analog remote computer control according to their control methods.

Knife type gate valves are suitable for connecting or cutting off cement slurry, gold ore powder, mineral sand, slag, coal slurry, pulp, wood pulp, tailings, fibers, dust, chemical treatment wastewater, sedimentation tanks, asphalt, silo outlets, fruits, grains, slaughterhouse wastewater and other media in oil, water, steam pipelines such as coal preparation, slag discharge, urban sewage treatment, food, paper, medicine, petroleum, chemical and other industries in mining power plants.

1. The adjustable gate sealing surface can scrape off the adhesive on the sealing surface and automatically remove debris.

2. Stainless steel gate can prevent sealing leakage caused by corrosion, and precision grinding and polishing treatment can achieve better sealing effect. The bottom of the blade is processed into a blade shape, which has cutting function for soft materials such as fibers, pulp, and wood pulp, and also has good opening and closing function. A hard PTFE scraper is installed on the upper end of the blade, which can prevent abrasive substances such as dust and gravel from entering the packing box and significantly improve the lifespan of the blade.

3. The stainless steel valve body is durable and long-lasting, and the reinforced rib design of the valve body improves its strength. The use of double headed screws allows for faster opening and closing.

4. The overall stainless steel material can prevent corrosion damage. The valve body and packing culvert are both precision cast, and the valve body is cast as a whole with a flange. The material can be selected as 304, 316, 316L according to user needs WCB、2Crl3， The sealing ring is made of PTFE reinforced polytetrafluoroethylene material, which is corrosion-resistant, wear-resistant, and slag free.

5. The fully circular DC channel design has no slag or blockage.

6. The scientific design of the upper sealing stuffing box ensures that the upper seal is safe, effective, and durable.

7. Short structural length can save raw materials, installation space, and effectively support pipeline strength.

8. Compact design, small space occupation, light weight, affordable price, easy installation, complete wear-resistant and anti blocking measures, easy maintenance, convenient use and long service life, and can freely choose the driving device.

This product is directly supplied by the manufacturer. If special configurations are required (can be customized), please specify the following parameters in detail when placing an order:

(For example: valve type, driving method, connection form, structural type, nominal pressure, nominal diameter, input signal, sealing surface material, valve body material, applicable temperature, whether accessories are included)