What is a knife gate valve

Knife gate valve, also known as knife gate valve, knife-type slurry valve, in less than two decades, its scope of use has expanded from ordinary fields to a wider range of industries. Coal preparation, gangue discharge and slag discharge from mines and power plants. It has developed into urban sewage treatment, and has developed from general industrial pipelines to professional pipeline systems such as food, sanitation, and medicine. The ultra-thin knife gate valve completely solves the large flow resistance of ordinary gate valves, flat gate valves, ball valves, globe valves, regulating valves, butterfly valves, etc. with its advantages of small size, small flow resistance, light weight, easy installation, and easy disassembly. , Heavy weight, difficult installation, large area and other difficult problems. After the emergence of knife gate valves, a large number of general shut-off valves and regulating valves have been replaced. To date, the world's largest consumption of knife gate valves is the United States and Japan.

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Material analysis, PMI Material analysis. Chemical analysis. Low temperature test, Tensile Test ,Impact test, Hardness test. Wall thickness test, roughness test. Torque test. NDT Inspection (MT,PT,UT,RT). HIC test ,SSC test . Intercrystalline corrosion Test ,Uniform corrosion Test.

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The company is the first one to pass ISO 9001(2008),ISO 14001 ,OHAS 18001 international quality system certificate, China pressure pipe safety registration certificate (AZ), European Union safety registration certificate (CE0036), and American Petroleum Institute Certificate (API 6D) and (API607) .

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We are one of the member unit of China Valve Association as well as China Gas Association, member unit of first class supplying network of CNPC and member unit of fittings supplying network of State Power Corporation.

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EDVC VALVE CO.,LTD.is a specialized in valve manufacturing enterprise with more than 15 years of history.We main produce Top Entry Ball Valve, Fully Welded Ball Valve, Arc Valve, Aluminum Bronze Valve, Automatic Recirculation Valve, Orbit Ball Valve, Safety Valve, Globe Valve, Tilting Disc Check Valve and Rising Stem Ball Valve etc.


The products have been exported to Austria, France, Germany, United Kingdom ,America, Middle East and Asia, Africa . areas and countries. Moreover, the products are widely used in the fields of oil & gas, Oil refinery, Petrochemical,power station ,Sewage treatment, pharmacy, Paper mills, pipeline industry , mining industry , chemical industry and environmental protection.

We are a professional manufacturer of valves in China, with the aim of "providing the first class products and services". On behalf of all of the members at EDVC Valve, we thank you for the opportunity to earn your business.

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Knife gate valve|Valve with the function of cutting off the medium

Knife gate valve has obvious advantages such as light switch, reliable sealing, good elastic memory and long service life. It can be widely used as a regulating and intercepting device on the pipelines of tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system, etc. There are plate gate valve, knife-type mud gate valve, knife-type slag gate valve, single-clamp slurry gate valve and manual single-clamp knife-type gate valve.

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Frequently Asked Question

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A knife gate valve is a component that utilizes a blade to cut through clogging of heavy liquids; whereas a slide gate valve is a component utilizing a slide plate in order to better manipulate or control the flow of dry bulk material. Knife gate valves were originally designed for use in the pulp and paper industry.

Knife gate valves should only be used for applications requiring a completely open or completely closed position and should not be used to regulate flow unless they are designed for it. Whenever fluid is forced against a partially closed gate, there will be a vibration, gradually eroding the disc and seat.

A knife gate valve works by allowing thick media to easily flow over soft seals with no interference. They work by chopping up the media as it passes through the valve. Today knife gate valves are used in numerous processing plants all over the world and come in large sizes.

Our updates and blog posts

knife-gate-valve|Common faults and solutions for knife gate valves

{keyword}.Leakage of closing parts of knife gate valve: The leakage of stuffing box is usually called external leakage, and the leakage of closing parts is called internal leakage.

knife-gate-valve|What is the difference between a knife gate valve and a gate valve

{keyword}.There are many types of gate valves, including soft-seal gate valves, hard-seal gate valves, etc., and knife gate valves belong to one of them.

knife-gate-valve|Good habit of preventive maintenance, the life of stainless steel knife gate valve is three times longer

{keyword}.Stainless steel knife gate valve is a very commonly used valve, but because it is working in mines and power plants, it will digest the life faster.

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