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Knife Gate Valve
Knife gate valves have a sharp cutting tool installed to deal with viscous, heavy liquids, or other abrasive media. Their straightforward design and easy-to-manipulate valve setup are ideal for wastewater treatment plants, cement plants, and mining facilities etc.
Lixin knife gate valves advantage：
1.With 23 years experience, we specialize in making various selections for different working conditions/special working conditions
2.The max. diameter is DN3000 (NPS 120)
3.The Max. pressure can reach 300LB (PN50) – customizable
4.Developed 10 series (200+ types) of knife gate valves
5.The largest knife gate valve manufacturer in China, with an annual production capacity of 10000+ tons
6.A research and development team with 40+ senior engineers and technical personnel
The chief Features:
Face to Face adopts short series, and light weight,so as to save pipe support.
During the opening and closing of the valve, the disc can automatically scrape off the adhered medium, which is beneficial to sealing.
The gate is conducive to cutting off the medium, discharging slag, and operating without blocking.
The wedge type block can provide sealing force and reliable sealing.
The guide pin can provide good guide function.
Wear-resistant sleeve of different materials can be provided as required to extend the service life of the valve.
Drive device (electric, gearbox, pneumatic, hydraulic, etc.) can be selected at will.
Frequently asked questions
QWhat are the advantages of knife gate valve?
Face to face dimensions adopt short series, and light weight valve is adopted,so as to save pipe,which can save pipeline installation space
QWhat is the connection type of knife gate valve?
Wafer Type.
QWhat type is the seal of rubber lined knife gate valve?
U-type sealing strip
QWhat parts of ceramic lined knife gate valve have been treated?
The valve seat and port is provided with ceramic ring, and the valve plate is quenched and tempered.
QWhat is the function of wedge positioning block in knife gate valve?
It can provide sealing force and seal more reliably
QWhat is the function of U-type sealing for rubber lined knife gate valve?
It can prevent the leakage caused by the movement of the sealing strip, and the slurry valve can achieve two-way zero leakage.
QWhat is the function of the lifting sealing surface of the knife gate valve?
During the open and closing of the valve,the adhesive on the sealing surface can be scraped off and the sundries can be removed automatically.
QWhat is the applicable working condition of ceramic lined knife gate valve?
It is applicable to the opening and closing of all kinds of worn dry dust, ore, slag water mixture and other media in mines, coal washing plants, power plants, dry ash systems, bin pump discharge transportation, etc.
QWhat fields can knife gate valves be used in?
Purification equipment, paper industry, food industry, urban construction, water conservancy system, power station ash removal, mining, steel industry, etc.
QWhat are the series of knife gate valves?
Bonnetless type Knife gate valve：integral valve body&split valve body,Bonnet type knife gate valve,Through type knife gate valve, special structure type knife gate valve.
QWhat are the characteristics of the valve seat of the Lined type screw knife gate valve ?
The valve seat is composed of two symmetrical rubber ferrules on both sides of the valve body. It is made of natural rubber and has a metal core inside to help keep its shape from deformation. The elasticity of the ferrule ensures that they are permanently connected together to prevent solid accumulation between the two parts of the valve body.
QWhat are the advantages of the valve seat design of Lined type screw knife gate valve ?
It is suitable for wearing media, and the sleeve protects the valve body. In terms of maintenance, the sleeve can be replaced and taken out from the outside of the valve body, making operation easier.
QWhat are the advantages of rubber lined knife gate valve?
The channel and sealing surface are vulcanized and wear-resistant rubber, with better wear resistance and erosion resistance.
QThe bottom of rubber lined knife gate valve plate is smooth without any groove?
Ensure that impurities do not accumulate
QIs there a knife shaped inclined at the bottom of the knife gate valve’s disc?
Yes, it can well cut off the medium, so that the valve can be closed smoothly without being blocked by the medium.
QIs the Lined type screw knife gate valve one-piece valve body or two-piece valve?
Two piece valve body
QIs the knife gate valve only designed with bonnetless type?
No, the knife gate valve can also be designed with bonnet type and the structure with bonnet has better sealing performance.
QIs screw type gate valve a movable valve seat?
Yes, the sealing valve seat is a movable structure design, easy to replace
QHow to prolong the service life of screw type knife gate valve?
The lifting disc, no matter fully open or fully closed, is always consistent with the sealing surface, and the sealing surface is protected from direct flushing by the medium, thus extending the service life of the valve.
QHow about the cleaning of the inner cavity of the screw type gate valve?
Because there are flushing ports on both sides of the valve body, it is convenient to clean the inner cavity of the valve.
QCan the rubber lined knife valve be used without rubber lining?
Yes, yes, no cavity structure, medium will not accumulate
QAdvantages of Double Gate Discharging Valve ?
After the valve is closed, it is fully sealed in any direction. The valve body and bonnet are welded with WCB steel castings and seamless steel pipes. The packing material is a hard seal, which has good sealing performance, strong wear resistance, small starting load, less ash sticking and fouling, and long service life.
Is it difficult for you to choose which valve? Please send us your questions and we will give you a detailed plan.
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