NKJ61H vacuum shut-off valve main structural characteristics and uses: a vacuum cutoff valve body uses Casting structure, with parallel twin seal vice half forced bi-directional sealing, seal in place sport and exercise wedge step wedge action to achieve zero leakage. 2, the vacuum valve sealing surface movement friction force is small, light and open and close, and the sealing surface wear with automatic compensation. 3, vacuum shut-off valve structure is simple, compact, easy maintenance, long service life. 4, the vacuum shut-off valve bonnet packing room with a vacuum seal structure, with the role of self-expanding compression and expansion of the sealing material with high strength sealing, the system is completely isolated from the atmosphere, with a good system tightness. 5, the vacuum shut-off valve flange connection type points, welding, two drive a manual, electric two kinds. The valve is suitable for operating temperatures ≤425 ℃ and ≤550 ℃, the working medium for piping water, steam or air, as the opening and closing devices; especially for thermal power plant steam turbine condensate and vacuum systems, vacuum isolated from the seal. Vacuum shut-off valve valve structure type Valve ctrucure type NKJ61 vacuum shut-off valve main performance specifications Product Type Product type shell strength test / MPa Sheli strangth test the seal test / MPa Back seal test seal test / MPa Seal test Applicable medium suitable for medium temperature / ℃ Applicable temperature NKJ61H-40 6.O 4.4 4.4 water, steam, air, Water, Steam, Air ≤425 NKJ61H-64 96 7.O 7.O NKJ61H-100 15.O 11.0 11.O NKJ61Y-40l 6.O 4.4 4.4 water, steam, air Water, Steam, Air ≤550 NKJ61Y-64l 9.6 7.0 7.O NKJ61Y-1OOI 15.O 11.O 11.O NKJ61H vacuum shut-off valve main parts and materials Material for Main Parts Body Part Name Part name , bonnet Body Bonnet Stem Valve Stem Disc valve stem sealing surface Sealing face Yokenut packing Packing nut fastener Fasteher NKJ61H-C type 25 or WCB chrome chromium stainless steel Crstain mless teel Crstain mless steel H: Alloy Steel H: alloy steel aluminum bronze AI bronze expanded graphite composite Expanding compound graphlte quality carbon steel High-grade carbon steel NKJ61Y-l-type chromium-molybdenum steel Cr.Mo steel 20CrlM01vA or 38CrMoAlA 12CrlMo 1VA Y: Carbide Y: oarbide alloy chromium-molybdenum steel Cr.Mo steel NKJ61H vacuum shut-off valves, main dimensions and weight Main dimensions and weight nominal diameter DN / mm Nominal diameter Nominal pressure PN / MPa Nominal pressure main dimensions and connection dimensions / mm Main extemal and connectingd mensions LHD D0 D1 L1 α W 1O 4.0 130 245 36 11 18.4 1O - 120 15 130 245 36 16 22.5 1O - 120 20 150 265 44 21 28.5 11 - 160 25 160 270 48 26 34.5 12 - 200 32 180 285 48 34 - - 37o30 '200 40 200 320 55 40 - - 37o30 '240 50 230 365 64 48 - - 37o30' 320 65 290 41O 82 66 - - 37o30 '300 80 31O 430 95 78 - - 37o30' 300 100 350 470 117 1OO - - 37o30 '350 125 400 500 143 126 - - 37o30 '350 150 480 533 167 150 - - 37o30' 400 1O 6.4 130 245 36 1O 18.4 1O - 120 15 130 245 36 15 22.5 1O - 120 20 150 265 44 20 28.5 11 - 160 25 160 270 48 25 34.5 12 - 200 32 180 280 48 33 - - 37o30 '200 40 200 320 55 39 - - 37o30' 240 50 230 365 64 48 - - 37o30 '320 65 290 41O 82 65 - - 37o30' 320 80 31O 430 95 76 - - 37o30 ' 360 100 350 470 117 98 - - 37o30 '400 125 480 500 143 123 - - 37o30' 400 150 480 533 167 148 - - 37o30 '500 1O 10.O 130 245 36 1O 18.4 1O - 120 15 130 245 36 14 22.5 1O - 120 20 150 265 44 20 28.5 11 - 160 25 160 270 48 25 34.5 12 - 200 32 180 285 48 32 - - 37o30 '200 40 200 320 55 38 - - 37o30' 240 50 230 355 64 48 - - 37o30 '320 65 290 41O 82 63 - - 37o30 '320 80 31O 430 95 74 - - 37o30' 360 1OO 350 470 117 97 - - 37o30 '400 125 400 500 143 123 - - 37o30' 400 150 480 533 167 148 - - 37o30 '500 Note: PN4.0 (40) valve allowed as PN1.0 (10), PN1.6 (16), PN2.5 (25) pressure level selection Ordering Information: one, ① vacuum shut-off valve product name and model ② vacuum cutoff ③ vacuum valve shut-off valve if caliber with attachments so that we correct for your selection.