What is the advantages of knife gate valve?

Knife type gate valve is also one kind of gate valves, which has a knife-shaped valve pate which can cut off the medium to avoid the closing of the knife gate valve to be blocked by the medium. The appearance of the knife gate valve solves the problems of heavy weight, large flow resistance, large area and difficult to install of those ordinary gate valves. The knife gate valve can replace the general cut-off industrial valve. Knife type gate valve can work with the working pressure 1.0Mpa-2.5Mpa, and the working temperature -29-550℃. the valve plate of the knife type gate valve has a shearing function, which can scrape off the adhesion on the sealing surface and automatically remove the sundries. And also the stainless steel valve plate can prevent the sealing leakage caused by medium corrosion. 

Wide applications of knife type gate valves: 

Knife type gate valve is suitable for coal preparation, slag discharge, urban sewage treatment, food, paper making, medicine, petroleum, chemical and other oils, water and steam pipelines, connecting and cutting off the cement slurry, gold ore powder,ore sand, slag, coal slime, pulp, wood pulp, tailing, fiber, dust, chemical treatment sewage, sedimentation tank, asphalt, silo outlet, fruit, grain, slaughterhouse, waste water and other mediums in the pipelines. 

Advantages of knife type gate valve

1. the sealing surface on the valve plate of the knife type gate valve can lifted, which can scrape off the adhesive on the sealing surface and automatically remove the sundries. 

2. The stainless steel valve plate of the knife gate valve can prevent sealing leakage caused by corrosion, and the fine grinding and polishing treatment can obtain better sealing effect. 

3. The stainless steel body of the knife gate valve is durable and has long service life, the reinforcement design of the valve body can improve the strength of the valve body, the studs are used for a quick opening and closing. 

4. The valve body and stuffing box are all precision casting. The valve body is integrally cast. The body material can be selected from ss304, ss316, ss316L, WCB, 2Cr13 according to customer’s requirement. The sealing ring of the knife gate valve can be made of reinforced PTFE material, which is corrosion resistant, wear resistant, and no slag. 

5. The full-circle DC channel design of the knife gate valve has no slag and no jamming. 

6. The scientific design of the upper sealing stuffing box makes the upper sealing more safe and effective, and durable. 

7. The face to face structural length of knife type gate valve is short, can save more raw materials and installation space, and also can effectively support the pipeline strength. 

8. The triangular bracket of knife gate valve can save raw materials used, and guarantee the required mechanical properties. 

9. The guide block on the valve body of the knife gate valve make the valve plate move correctly. Extrusion blocks ensure the effective sealing of the knife gate valve. 

10. The valve plate of the knife gate valve has 5 supporting points, when the knife gate valve is closed and bearing back pressure, the valve plate of the knife gate valve will not be offset. 

Belo Valve is a more than 15 years professional manufacturer for industrial valves, like butterfly valves( center line wafer butterfly valve, manual butterfly valve, lever driving butterfly valve, butterfly valve with worm gear box, lug type butterfly valve, soft seal butterfly valves, hard seal butterfly valves, flange butterfly valves, ductile cast iron butterfly valves, stainless steel butterfly valve), gate valves(including DINF4 gate valves, DINF5 gate valves, DIN3352 gate valves, rising stem gate valves, non rising stem gate valves, soft seal gate valves, hard seal gate valves, hydraulic gate valves, sluice valves), globe valves( DIN globe valves, bellows globe valves, electric globe valve), ball valves( welded ball valves, soft seal ball valves, stainless steel ball valves, WCB ball valves, ductile cast iron ball valves, API ball valves), check valves( wafer type check valves, swing check valves, rubber disc check valves, ball type check valve, foot valve/bottom valve), fire protection valves( grooved butterfly valves, grooved gate valves, grooved strainers, grooved check valves), hydraulic control valves,etc.

other articles about knife type gate valves:

1. Introduction about knife type gate valve