stainless steel butterfly check valve
technical parameter
product model: h76h/w
nominal diameter: dn50~1200mm
nominal pressure: pn1.0~4.0mpa
operating temperature: -29°c~200°c
applicable medium: water, steam, oil, nitric acid, acetic acid
product description
stainless steel butterfly check valve is composed of valve body, valve disc, valve stem and spring and other parts, and is connected by wafer. due to the short closing stroke and spring loading of this disc, water hammer is significantly reduced. mainly used in urban, industrial and high-rise building water supply, drainage network. its structural length is shorter than that of general check valves, and it is suitable for occasions with limited installation space. the opening and closing parts are opened or closed by the medium flow and force to prevent the backflow of the medium.
product features
1. the stainless steel butterfly check valve has small water hammer pressure, short disc stroke, and has a spring-assisted closing, and the valve closing speed is fast. the structure is short in length, small in size and light in weight, which brings great convenience to valve installation, handling, storage and pipeline layout, and can save a lot of materials and reduce construction costs.
2. the fluid resistance of the valve is small. with the increase of the valve diameter, the force coefficient of the fluid group decreases. can be installed horizontally or vertically. light weight eliminates the need to provide a seat for the valve. the opening pressure is very small, and the valve disc can be fully opened under a small pressure difference. the valve is an integral structure, simple and compact, and has high reliability.
main performance specifications
dn | dn(mm) | dn50~dn1200 | |||
pn | pn(mpa) | 1.0mpa | 1.6mpa | 2.5mpa | 4.0mpa |
test pressure | strength test | 1.5mpa | 2.4mpa | 3.75mpa | 6.0mpa |
seal test | 1.1mpa | 1.76mpa | 2.75mpa | 4.4mpa | |
applicable media | water, steam, oil, sewage, acid and alkali | ||||
proper temperature | rubber sealing surface (x) -20℃~120℃ alloy steel sealing surface (h) body carbon steel -29℃~425℃ stainless steel body for acid medium -29℃~200℃ |
material of main parts
body | cast iron, cast steel, stainless steel, chromium nickel molybdenum titanium steel |
plate | cast iron, cast steel, stainless steel, chromium nickel molybdenum titanium steel |
stem | carbon steel, 2cr13, stainless steel, chromium nickel molybdenum titanium steel |
sealing ring | rubber, stainless steel, alloy steel |
spring | 60si2mn、3cr13、17-7ph、inconel |
main external connection dimensions
pn | caliber | size(mm) | wt(kg) | piping flange(for reference) | |||||||||
nps | dn | l | d | d3 | d2 | bolt hole center circle diameter d1 | number of bolts | bolt diameter d | bolt length l1 | ||||
in | mm | rf | rj | ||||||||||
class 150 pn2.0mpa | 2 | 50 | 60 | 103 | 56 | 51 | 2 | 120.5 | 4 | 5/8 | m16 | 140 | 155 |
3/2 | 65 | 67 | 122 | 73 | 65 | 3 | 139.5 | 4 | 5/8 | m16 | 150 | 165 | |
3 | 80 | 73 | 135 | 88 | 80 | 4 | 152.5 | 4 | 5/8 | m16 | 160 | 175 | |
4 | 100 | 73 | 173 | 108 | 102 | 6 | 190.5 | 8 | 5/8 | m16 | 170 | 185 | |
5 | 125 | 86 | 195 | 132 | 127 | 8 | 216.0 | 8 | 3/4 | m20 | 190 | 205 | |
6 | 150 | 98 | 220 | 160 | 152 | 13 | 241.5 | 8 | 3/4 | m20 | 205 | 220 | |
8 | 200 | 127 | 277 | 210 | 203 | 25 | 298.5 | 8 | 3/4 | m20 | 240 | 255 | |
10 | 250 | 146 | 337 | 266 | 254 | 39 | 362.0 | 12 | 7/8 | m24 | 270 | 285 | |
12 | 300 | 181 | 407 | 310 | 305 | 54 | 432.0 | 12 | 7/8 | m24 | 310 | 325 | |
14 | 350 | 184 | 448 | 355 | 350 | 80 | 476.0 | 12 | 1 | m27 | 325 | 340 | |
16 | 400 | 191 | 512 | 405 | 400 | 117 | 540.0 | 16 | 1 | m27 | 340 | 355 | |
18 | 450 | 203 | 547 | 455 | 450 | 138 | 578.0 | 16 | 11/8 | m30 | 365 | 380 | |
20 | 500 | 219 | 604 | 505 | 500 | 163 | 635.0 | 20 | 11/8 | m30 | 385 | 400 | |
24 | 600 | 222 | 715 | 605 | 600 | 331 | 749.5 | 20 | 11/4 | m33 | 405 | 420 | |
28 | 700 | 305 | 773 | 700 | 700 | 380 | 795.5 | 40 | 3/4 | m20 | 455 | - | |
30 | 750 | 305 | 824 | 750 | 746 | 425 | 846.0 | 44 | 3/4 | m20 | 455 | - | |
32 | 800 | 305 | 878 | 800 | 796 | 560 | 900.0 | 48 | 3/4 | m20 | 460 | - | |
36 | 900 | 368 | 983 | 910 | 898 | 640 | 1009.5 | 44 | 7/8 | m24 | 540 | - | |
42 | 1050 | 432 | 1142 | 1055 | 1050 | 960 | 1171.5 | 48 | 1 | m27 | 625 | - | |
48 | 1200 | 524 | 1302 | 1205 | 1200 | 1400 | 1335.0 | 44 | 11/8 | m30 | 740 | - | |
class 300 pn5.0mpa | 2 | 50 | 60 | 110 | 58 | 51 | 3 | 127.0 | 8 | 5/8 | m16 | 155 | 175 |
3/2 | 65 | 67 | 128 | 73 | 65 | 4 | 149.0 | 8 | 3/4 | m20 | 175 | 195 | |
3 | 80 | 73 | 147 | 88 | 80 | 6 | 168.5 | 8 | 3/4 | m20 | 190 | 210 | |
4 | 100 | 73 | 179 | 108 | 102 | 8 | 200.0 | 8 | 3/4 | m20 | 195 | 215 | |
5 | 125 | 86 | 214 | 132 | 127 | 15 | 235.0 | 8 | 3/4 | m20 | 215 | 235 | |
6 | 150 | 98 | 249 | 160 | 152 | 18 | 270.0 | 12 | 3/4 | m20 | 230 | 250 | |
8 | 200 | 127 | 305 | 210 | 203 | 31 | 330.0 | 12 | 7/8 | m24 | 280 | 300 | |
10 | 250 | 146 | 359 | 266 | 254 | 51 | 387.5 | 16 | 1 | m27 | 315 | 335 | |
12 | 300 | 181 | 420 | 310 | 305 | 77 | 451.0 | 16 | 11/8 | m30 | 365 | 385 | |
14 | 350 | 222 | 483 | 355 | 350 | 117 | 514.5 | 20 | 11/8 | m30 | 410 | 430 | |
16 | 400 | 232 | 537 | 405 | 400 | 190 | 571.5 | 20 | 11/4 | m33 | 435 | 455 | |
18 | 450 | 264 | 594 | 455 | 450 | 200 | 628.5 | 24 | 11/4 | m33 | 475 | 535 | |
20 | 500 | 292 | 652 | 505 | 500 | 265 | 686.0 | 24 | 1 1/4 | m33 | 510 | 585 | |
24 | 600 | 318 | 772 | 608 | 600 | 410 | 813.0 | 24 | 11/2 | m39 | 560 | - | |
30 | 750 | 368 | 882 | 740 | 735 | 660 | 921.0 | 36 | 13/8 | m36 | 650 | - | |
36 | 900 | 483 | 1044 | 880 | 873 | 1020 | 1089.0 | 32 | 15/8 | m42 | 800 | - | |
42 | 1050 | 568 | 1196 | 1045 | 1035 | 1540 | 1244.5 | 36 | 13/4 | m45 | 920 | - | |
48 | 1200 | 629 | 1365 | 1190 | 1179 | 2260 | 1416.0 | 40 | 17/8 | m48 | 1010 | - |