Top-mounted butterfly valve features and how to install

Top-mounted metal seal butterfly valve is multi-level three eccentric metal seal butterfly valve, based on user needs to develop the new butterfly valve. In addition to all the excellent performance of triple eccentric multi-layer metal seal butterfly valve, but also bi-directional pressure, the top-mounted butterfly valve, one of the biggest advantages can be achieved in the field maintenance. With the choice of valve material, the temperature can be from -29 ℃ ~ 550 ℃, because of its good flow characteristics, both off the media can be closed, you can also adjust the media flow. Applications Top-mounted hard seal butterfly valve for medium temperature -29 ℃ -600 ℃, the nominal pressure of 0.6 ~ 2.5MPa medium is water, steam, oil, hot air, corrosive and other pipelines, in order to cut off the fluid and adjust The purpose of the media flow is the best opening and closing mechanism on a variety of pipelines. Body-mounted hard-sealed butterfly valve control: worm gear, electric, pneumatic, pipe network Features 1. The new top-loading structure to solve the traditional eccentric butterfly valve can not be repaired in the field. In accordance with the original multi-level three eccentric butterfly valve, when the ring is damaged, you need to return to the manufacturer to repair or remember a butterfly valve scrapped. The up-mounted butterfly valve need not be removed from the pipeline, it takes only a very short time to open the valve cover can be removed together with the valve stem and disc body cavity to repair or replace the seal, then cover the valve cover seal , You can achieve during the maintenance of the valve can not affect the normal operation of the pipeline system to repair the valve caused by the loss of benefits reduced to a minimum; Multi-level three eccentric metal seal butterfly valve all the good performance; 3. Reliable sealing function, up to the gas seal no leakage; 4. Butterfly streamlined design, with high strength, large flow area, small flow resistance, energy saving. Top-mounted butterfly valve works: Top-mounted hard seal butterfly valve is mainly composed of the valve body, valve cover, disc, valve shaft, valve body seals, disc seals, bushings, bottom cover, drive and other components. By rotating the butterfly hand wheel, worm wheel drive worm, worm wheel drive stem and disc, relative to the valve body within 90 degrees of freedom to rotate in order to achieve the top-mounted butterfly valve to open and close, which will also achieve the regulation of the media flow and cut off The purpose of the fluid, the butterfly valve clockwise to turn the handwheel is closed. Hard seal butterfly valve implementation of the standard 1. Valve design, manufacturing in accordance with: "GB / T12238-1989" universal valve flange and the butterfly valve connected to the folder, "JB / T8527-1997" metal seal butterfly valve "; 2. Valve pressure test in accordance with: GB / T13927-1992 "General Valve Pressure Test", JB / T9092-1999 "valve inspection and testing"; Valve structure length in accordance with: GB / T12221-2005 "metal valve structure length" 4. Flange connection size in accordance with: GB / T9113.1-2000 "flat, convex overall steel pipe flange." Top Performance Specifications for Top Mount Butterfly Valves Nominal Pressure (MPa) 0.6 1.0 1.6 2.5 Strength Test Pressure (MPa) 0.9 1.5 2.4 3.8 Seal Test Pressure (MPa) 0.66 1.1 1.76 2.75 Gas Seal Test Pressure (MPa) 0.6 Applicable Temperature Carbon Steel: - 29 ℃ ~ 80 ℃; Chromium nickel nickel steel (R, P): ≤ 200 ℃; Chromium molybdenum steel (Ⅰ): ≤ 550 ℃. Applicable medium Carbon steel: non-corrosive or weakly corrosive media such as water, air, natural gas and oil products; R, P: nitric acid or acetic acid; Corrosive medium; High temperature oil and other media. Driving Worm Gear, Electric, Pneumatic, Hydraulic, Pipe Network On-load Butterfly Valve Main Parts Materials Up-loaded Butterfly Valve Part Name Up-mounted Butterfly Valve Material Name Body, bonnet, disc WCB, chrome nickel titanium steel, chrome molybdenum steel seat Seal ring Stainless steel, No. 6 Shaft 13Cr, chrome nickel titanium steel, chrome molybdenum steel Disc seals chrome nickel titanium steel, chrome molybdenum steel filler Flexible graphite bushings Composite sets of packing gland WCB ,, chrome nickel titanium steel, chromium molybdenum Steel bracket WCB, Carbon structural steel Top-mounted butterfly valve schematic diagram Nominal pressure (MPa) 0.61.01.62.5 Strength test pressure (MPa) 0.91.52.43.8 Seal test pressure (MPa) 0.661.11.762.75 Gas seal test pressure (MPa) 0.6 Applicable temperature Carbon steel: -29 ℃ ~ 80 ℃; Chromium nickel nickel steel (R, P): ≤ 200 ℃; Chromium molybdenum steel (Ⅰ): ≤ 550 ℃. Applicable medium Carbon steel: non-corrosive or weakly corrosive media such as water, air, natural gas and oil products; R, P: nitric acid or acetic acid; Corrosive medium; High temperature oil and other media. Driving Worm Gear, Electric, Pneumatic, Hydraulic, Pipe Network Top Mount Butterfly Valve Part Name Top Mount Butterfly Valve Material Name Valve Body, Cover, Disc WCB, Chrome Nickel Titanium Steel, Chrome-Molybdenum Steel Seat Seal Stainless Steel, No. 6 Valve Shaft 13Cr, Chrome Nickel Titanium Steel, Chromium-Molybdenum Steel Disc Seal Chromium Nickel-Titanium Steel, Chromium-Molybdenum Steel Packing Flexible Graphite Sleeve Compounding Sleeve Gland WCB ,, Chrome-Nickel Titanium Steel, Chrome-Mo Steel Bracket WCB, Carbon Structural steel

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