The pneumatic double-clamp type hard-sealing butterfly valve adopts a precise j-shaped elastic sealing ring and a three-eccentric multi-level metal hard sealing structure, and is widely used for treating gold, electric power, petrochemical industry, water supply and drainage and municipal construction of the medium temperature and 425 DEG C, And is used for regulating flow and carrying off fluid.
Characteristics of Pneumatic clamping hard Seal Butterfly Valve
1. The pneumatic clamping hard seal butterfly valve adopts three eccentric sealing structure, and the valve seat and butterfly plate have almost no wear and tear, so it has the sealing function of more and more tight.
2. The sealing ring is made of stainless steel, and has the dual advantages of metal hard seal and elastic sealing, and has the characteristics of corrosion resistance, long service life and the like, both at low temperature and high temperature.
3. The sealing surface of the disc is made of hardfacing cobalt-based hard alloy, and the sealing surface is resistant to wear and has long service life.
4. The large size butterfly plate adopts quilting structure, which has the advantages of high strength, large overcurrent area and small flow resistance.
5. The valve has two-way sealing function. The valve is not limited by the flow of medium during installation, and is not affected by the space position. It can be installed in any direction.
6.The drive unit can be installed at multiple stations (rotated 90 ° or 180 °) for ease of use by the user
The gas butterfly valve is mainly divided into hard seal gas butterfly valve and rubber soft seal butterfly valve according to different sealing forms.
Cast Iron Butterfly Valve BS 5155 Pressure Rating : Class-125 Material : Cast Iron Description : Wafer Type, With Lugs, Centric Disc Disc : Ductile Iron / SS 304 / SS 316 Seat : Moulded EPDM, BUNA-N, Neoprene, Viton Ends : Lugged Operator : Lever, Gear, Pneumatic, Electric Item Code : CI000029 Size : 40mm Notes : Available Valve Size : 40mm to 400mm
Cast Iron Butterfly Valve IS 13095, BS 5155 Pressure Rating : PN-1.6 Material : Cast Iron / Ductile Iron Description : Wafer Type Disc : Ductile Iron / SS 304 / SS 316 Seat : Moulded EPDM, BUNA-N, Neoprene, Viton Ends : Wafer Type Operator : Lever, Gear, Pneumatic, Electric Item Code : CI000091 Size : 40mm Notes : Available Valve Size PN-16 40mm to 400mm PN-25 40mm to 400mm
Cast Steel Butterfly Valve Pressure Rating : PN-10 Material : Cast Steel (WCB) Description : Wafer type, Centric Disc Body Seat : Moulded EPDM, BUNA-A, Neoprene, Viton Ends : Wafer, Lugged Operator : Lever, Gear, Electric, Pneumatic Item Code : CCS00014 Size : 50mm Notes : Available Valve Size : PN-10 40mm to 400mm PN-16 40mm to 400mm PN-20 40mm to 400mm Material : CF8, CF8M, CF3, CF3M etc.
Cast Iron Motorised Butterfly Valve IS 13095, BS 5155 Pressure Rating : PN-1.6 Material : Cast Iron Description : Wafer Type, Centric Disc Disc : Ductile Iron / Stainless Steel Ends : Wafer Type, Lugged, Flanged Operator : Electric Actuator Item Code : CI00091E Size : 40mm Notes : Available Valve Size : 40mm to 400mm
The butterfly-shaped buffer check valve is composed of a valve body, a valve clack, a buffer device and a micro-regulating valve. The product has the characteristics of novel structure, small volume, small fluid resistance, stable operation, reliable sealing, abrasion resistance, good buffer performance and the like, and is mainly used for industrial water supply and water pump outlet of the sewage treatment plant, and the medium in the pipe network is prevented from flowing reversely. The destructive water hammer is automatically eliminated, so that the water pump and the pipeline are not damaged The butterfly type buffer check valve can be divided according to its structure and installation mode. 1. The disc of the butterfly buffer check valve is disc shaped and rotates around the rotating shaft of the seat passage. Because the inner channel of the valve is streamlined and the flow resistance is smaller than that of the lifting butterfly check valve, it is suitable for large caliber situations with low velocity and irregular flow, but not suitable for pulsating flow, and its sealing performance is not as good as that of lifting type. Butterfly check valve is divided into three types: single valve type, double valve type and multi half type. These three forms are mainly divided according to valve caliber, in order to prevent the medium from stopping flow or backflow, and to reduce the hydraulic impact. 2, butterfly buffer check valve: disc sliding along the vertical center line of the valve body check valve, the internal thread check valve can only be installed on the horizontal pipe, in the high pressure small caliber check valve disc can use a ball. Butterfly check valve body shape is the same as globe valve (can be used with globe valve), so its fluid resistance coefficient is large. The structure is similar to the globe valve, and the valve body and disc are the same as the globe valve. The upper part of the disc and the lower part of the cover are machined with a guide sleeve, and the disc guide can be lifted and lifted freely in the guide simple of the valve. When the medium flows down, the disc is opened by the medium thrust, and when the medium stops, the disc falls on the seat from drooping, which plays the role of preventing the media countercurrent. The direction of the medium inlet and outlet channel of the straight butterfly check valve is perpendicular to the direction of the valve seat channel, and the direction of the medium inlet and outlet channel of the vertical lifting check valve is the same as that of the valve seat channel, and its flow resistance is smaller than that of the straightway type.
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The three-bar cut-off butterfly valve includes the valve body, the valve plate and the driving device. The valve plate is opened and closed by a four-bar mechanism. The four-bar mechanism includes an active rod fixed to the main transmission shaft, a two-follower rod between the transmission shaft and the valve plate, and a valve plate. The valve plate support is arranged on the valve plate, the active rod is connected with the valve plate support, and the two follower rods are connected with the transmission shaft and the valve plate support respectively. The butterfly valve drive device drives the main drive shaft to rotate, so as to drive the four-linkage mechanism composed of active rod, two-follower rod and valve plate to move relative to the valve body pedestal, select the appropriate connecting rod size, make the valve plate move according to the set running track, and realize the reliable valve opening and closing action. The lever cutting butterfly valve has the advantages of small structure size and light weight. The valve plate has a period of opening and closing translation process relative to the valve body at the moment of valve opening and closing, and the friction free operation can ensure the sealing performance of the sealing surface for a long time. 1 Suitable for blast furnace hot blast furnace system, can be used as cold air valve, gas (air) cut-off valve, gas (air) combustion valve, flue valve and so on. The utility model has the advantages of compact structure, light weight, small installation space, strict and reliable seal and long life. 2. Main Technical characteristics of connecting Bar cutting Butterfly Valve The finite element analysis and design are adopted to optimize the size of the connecting rod system to ensure the reliable running track of the valve under high temperature and high pressure. At the same time, we adopt the special structure design of sealing compensation, coating, surfacing wear and corrosion resistant material, multi-layer sealing structure at the shaft end, etc., and the use of many patented technologies makes the connecting rod cutting butterfly valve have the characteristics of high temperature resistance, wear resistance and long life.
Suitable for large and medium blast furnace gas cleaning system, used as gas pressure regulating valve group, can also be used in other systems that need decompression and must maintain stable production. The pressure regulating valve group is composed of several regulating valves and a constant pipe, which has good regulating performance.
The metallurgical gate valve is installed on the combustion air, gas, cold air and flue gas pipes of the hot blast stove system, cutting off the medium. In general, the gate works only in the full open or full off state and is not suitable for use as an adjustment or throttle. Suitable for combustion air, gas, cold air and flue gas piping in blast furnace hot blast furnace system Wedge block is arranged on both sides of valve body to realize forced sealing Cemented carbide sealing surface
