Knife Gate Valve

The GAIRUI Cast Iron Wafer Knife Gate Valves are widely used in coal mine, power plant ash disposal, slag disposal, urban sewage treatment, food, health, medicine and other professional piping systems. The knife type gate valve has the advantages of simple and compact structure, reasonable design, light saving material, reliable sealing, light and flexible operation, small volume, smooth passage, small flow resistance, light weight, easy installation, easy disassembly and so on. It can work under the condition of working pressure 1.0MPa-2.5MPa and temperature -29-150 Degree C. The knife type gate valve has the shearing function, it can scrape the adhesive on the seal surface and automatically remove the sundries. The stainless steel gate can prevent the seal leakage caused by the corrosion. Valves of this type should be installed horizontally in pipes.

The GAIRUI Knife Gate Valves, its opening and closing is the gate, the direction of the motion of the gate is perpendicular to the direction of the fluid, and the medium is cut off by cutting the blade of the fiber material. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valve form the wedge and wedge angle with the valve parameters, usually 5 degrees, and the wedge-shaped knife type gate valves. The sluice can be made into a whole, called a rigid sluice board, or a sluice which can produce a small amount of deformation to improve its craft and make up for the deviation produced by the angle of the sealing surface in the process of processing. This gate is called an elastic gate. In fact, the valve body does not exist, the gate is lifted in the side guide slot, and the lug at the bottom is pressed on the seat. If a high medium seal is needed, a O - shaped seal can be used to achieve a two-way seal. The knife gate valve has smaller installation space, low working pressure, less accumulation of debris and low price.

The GAIRUI Knife Gate Valves are widely used in coal mine, power plant ash disposal, slag disposal, urban sewage treatment, food, health, medicine and other professional piping systems. The knife type gate valve has the advantages of simple and compact structure, reasonable design, light saving material, reliable sealing, light and flexible operation, small volume, smooth passage, small flow resistance, light weight, easy installation, easy disassembly and so on. It can work under the condition of working pressure 1.0MPa-2.5MPa and temperature -29-150 Degree C. The knife type gate valve has the shearing function, it can scrape the adhesive on the seal surface and automatically remove the sundries. The stainless steel gate can prevent the seal leakage caused by the corrosion. Valves of this type should be installed horizontally in pipes.

The GAIRUI Metal Seated Flange Knife Gate Valves, its opening and closing is the gate, the direction of the motion of the gate is perpendicular to the direction of the fluid, and the medium is cut off by cutting the blade of the fiber material. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valve form the wedge and wedge angle with the valve parameters, usually 5 degrees, and the wedge-shaped knife type gate valves. The sluice can be made into a whole, called a rigid sluice board, or a sluice which can produce a small amount of deformation to improve its craft and make up for the deviation produced by the angle of the sealing surface in the process of processing. This gate is called an elastic gate. In fact, the valve body does not exist, the gate is lifted in the side guide slot, and the lug at the bottom is pressed on the seat. If a high medium seal is needed, a O - shaped seal can be used to achieve a two-way seal. The knife gate valve has smaller installation space, low working pressure, less accumulation of debris and low price.

The new product elastic compensation valve seat knife gate valve specifically relates to the valve manufacturing field, including the valve body. The outlet position of the valve body is provided with a pressure sleeve, one side of the pressure sleeve is provided with a valve seat, between the valve seat and the pressure sleeve is provided with a spring, between the valve seat and the valve body is provided with an O-ring, one side of the valve seat is provided with a wedge, and between the wedge and the valve seat is provided with a ram, The top of the valve body is connected with the gate plate with a filler. The utility model is provided with a valve seat, a wedge block and a gate, and the rotating hand wheel drives the position of the gate to move down, which can squeeze the valve seat to drive the spring to shrink when the gate valve is closed. Then, under the spring resilience, the contact position between the valve seat and the gate can be automatically adjusted to achieve better sealing effect, which avoids the excessive wear of the gate when the gate valve and the valve seat move relative to each other, Keep good sealing effect continuously.

The GAIRUI Square Gate Valves is designed with unique external arc shape, reasonable structure and uniform force, made of high quality gray cast iron or spheroidal graphite cast iron and stainless steel, copper strip or rubber in sealing surface, and after precision processing, it can reach plane contact seal and good sealing performance. When the sealing performance drops, it can pass the wedge device. The adjustment is solved.

The GAIRUI Pneumatic Knife Gate Valves is made into two forms (dark rod DN50 to 900mm, bright rod DN50 - 900mm) according to the different caliber. The full circular DC channel is designed for no slag retention and non blocking. The bottom of the knife plate is machined into a knife edge, which has the function of cutting off soft materials such as fiber, pulp and wood pulp, and has good opening and closing functions. A hard polytetrafluoroethylene scraper is installed on the upper end of the knife plate, which prevents dust, sand and other scraping substances from entering the packing box, and significantly improves the service life of the cutter plate. Valve plate material selection stainless steel, fine grinding polishing treatment can get the best sealing effect. Compact design, small space, light weight, cheap price, easy to install, wear-resistant and anti blocking measures are perfect, easy to repair, easy to use and long life, and can choose the driving device arbitrarily.

The opening and closing part of the knife gate valve is the ram, and the movement direction of the gate is perpendicular to the direction of the fluid. The knife gate valve can only be fully opened and closed, and can not be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valves form wedges and wedge angles that vary with the parameters of the valve, usually 50. The sluice of the wedge type knife gate valve can be made into a whole, called a rigid gate, and a sluice which can produce a trace deformation to improve its craft and make up the angle of the seal face. Deviations produced in the process of work.

The Ceramic Knife Gate Valve is used in excessive wear pipeline for open-close purpose. The valve is compact in design, easy to install. Seal seat of the valve adopts (ZTA) ceramic composite sealing form and its hardness (HRC 90 ) has good toughness , solving the problem of hard and brittle ceramics, effectively ensuring the high wear-resistance and corrosion-resistance. The valve plate is made of high chromium alloy with high wear-resistance, impact -resistance, and it can be used for throttling. Besides, the valve is featured with light and easy opening and little friction, ash deposition and ash clogging will not occurred in valve chamber.

The GAIRUI Through Conduit Knife Gate Valves can be made of hard and soft sealing structure according to the needs of the customer. The penetrating knife gate valve has the characteristics of precision structure, good craft and compact structure. The sealing valve seat is designed for the active structure, and has the function of anti wear and automatic compensation, thus the life is longer. During the closing and opening process, the valve seat and the ram are always moving closely, so that the valve opening and closing force is stable and has the characteristics of cutting off the medium.

The GAIRUI Through Conduit Knife Gate Valves can be made of hard and soft sealing structure according to the needs of the customer. The penetrating knife gate valve has the characteristics of precision structure, good craft and compact structure. The sealing valve seat is designed for the active structure, and has the function of anti wear and automatic compensation, thus the life is longer. During the closing and opening process, the valve seat and the ram are always moving closely, so that the valve opening and closing force is stable and has the characteristics of cutting off the medium.

The slurry valve is divided into clip type and integral type, and the "U" and "T" composite structure are used for the sealing of the clip valve body. The integral body seal adopts the "O" type compound seal ring structure, which overcomes the disadvantages of easy displacement and deformation and medium leakage after the force of "U" type sealing pad used in the original pinch type slurry valve. The knife gate structure is adopted to solve the problem of the valve closing, the valve leakage and leakage. It has the advantages of reasonable structure, convenient operation, quick opening, wear resistance, corrosion resistance, long service life, strong interchangeability, convenient assembly, low maintenance cost, high economic benefit, reliable sealing and avoiding "gnawing ring" phenomenon. It is suitable for the cut-off of granular material conveying pipeline in mining, metallurgy, coal, chemical industry, power plant and other industries, It is the first choice of slurry conveying system.

The slurry valve is divided into clip type and integral type, and the "U" and "T" composite structure are used for the sealing of the clip valve body. The integral body seal adopts the "O" type compound seal ring structure, which overcomes the disadvantages of easy displacement and deformation and medium leakage after the force of "U" type sealing pad used in the original pinch type slurry valve. The knife gate structure is adopted to solve the problem of the valve closing, the valve leakage and leakage. It has the advantages of reasonable structure, convenient operation, quick opening, wear resistance, corrosion resistance, long service life, strong interchangeability, convenient assembly, low maintenance cost, high economic benefit, reliable sealing and avoiding "gnawing ring" phenomenon. It is suitable for the cut-off of granular material conveying pipeline in mining, metallurgy, coal, chemical industry, power plant and other industries, It is the first choice of slurry conveying system.

The slurry valve is divided into clip type and integral type, and the "U" and "T" composite structure are used for the sealing of the clip valve body. The integral body seal adopts the "O" type compound seal ring structure, which overcomes the disadvantages of easy displacement and deformation and medium leakage after the force of "U" type sealing pad used in the original pinch type slurry valve. The knife gate structure is adopted to solve the problem of the valve closing, the valve leakage and leakage. It has the advantages of reasonable structure, convenient operation, quick opening, wear resistance, corrosion resistance, long service life, strong interchangeability, convenient assembly, low maintenance cost, high economic benefit, reliable sealing and avoiding "gnawing ring" phenomenon. It is suitable for the cut-off of granular material conveying pipeline in mining, metallurgy, coal, chemical industry, power plant and other industries, It is the first choice of slurry conveying system.