Design Features:
Check Valves are the valves of stopping the fluid from backflow. The disc can be opened by the pressure of fluid. And then the fluid runs from the inlet to the outlet side. When the pressure of inlet is less than outlet, the disc can be cloased automatically and stop the fluid from backflow.
ZG Check Valve Features
1. Rational Structures, Reliable Sealing.The product structure is reasonable, the seal is reliable, and the performance is good.
2. Hard-alloy Seal, Long Life.The sealing surface is welded with hard alloy, which has good wear resistance and long service life.
Field of Application:
Size Range: DN15 and DN400
Temperature: (-)29℃ to 425℃
Allowable Operating Pressure:PN16、PN25、PN40
Check Valve for use inpetrochemical industry, Chemical,Fiber Textiles, plastic, paper making, power industry, steel, rubber and gas systems.
Performance Specifications:
Nomial Pressure | PN16 | PN25 | PN40 |
Nomial Pressure | 1.6Mpa | 2.5Mpa | 4.0Mpa |
Intensity Test | 2.4Mpa | 3.75Mp | 6.0Mpa |
Back Seal | 1.76Mpa | 2.75Mp | 4.4Mpa |
Seal Test | 1.76Mpa | 2.75Mp | 4.4Mpa |
Gas Test | 0.6Mpa | 0.6Mpa | 0.6Mpa |
Working Temperature | -29 ~ 425 | ||
Medium | W.O.G |
Technical Specification:
1. Design Standard DIN EN12288-2003
2. Face to Face Dimension DIN EN588-1:1995
3. End Flange Dimension DIN EN1092-1:2002
4. Test Standard DIN EN12266:2003
MATERIAL LIST
Item No. | Part Name | Specification |
1 | Body | GG GS-C25, CF8, CF8M |
2 | Disc | GS-C25, CF8, CF8M |
3 | Bonnet | GG GS-C25, CF8, CF8M |
4 | Spring | 1.0908 |
5 | Bolt | A193-B7, A193-B8 |
6 | Nut | A1942H, A194-8 |
7 | Gasket | Flexible Graphite+304 |
DN | PN16 | PN25 | PN40 | ||||||||||||||||||||||||
L | D | D0 | D1 | g | f | nXd | H | Weight | L | D | D0 | D1 | g | f | nXd | H | Weight KG | L | D | D0 | D1 | g | f | nXd | H | Weight KG | |
15 | 130 | 95 | 65 | 45 | 16 | 2 | 4x14 | 70 | 3.5 | 130 | 95 | 65 | 45 | 16 | 2 | 4x14 | 70 | 3.5 | 130 | 95 | 65 | 45 | 16 | 2 | 4x14 | 70 | 3.5 |
20 | 150 | 105 | 75 | 58 | 18 | 2 | 4x14 | 70 | 3.8 | 150 | 105 | 75 | 58 | 18 | 2 | 4x14 | 70 | 3.8 | 150 | 105 | 75 | 58 | 18 | 2 | 4x14 | 70 | 3.8 |
25 | 160 | 115 | 85 | 68 | 18 | 2 | 4x14 | 80 | 5.0 | 160 | 115 | 85 | 68 | 18 | 2 | 4x14 | 80 | 5.0 | 160 | 115 | 85 | 68 | 18 | 2 | 4x14 | 80 | 5.0 |
32 | 180 | 140 | 100 | 78 | 18 | 2 | 4x18 | 80 | 8.8 | 180 | 140 | 100 | 78 | 18 | 2 | 4x18 | 80 | 8.8 | 180 | 140 | 100 | 78 | 18 | 2 | 4x18 | 80 | 8.8 |
40 | 200 | 150 | 110 | 88 | 18 | 3 | 4x18 | 85 | 12 | 200 | 150 | 110 | 88 | 18 | 3 | 4x18 | 85 | 12 | 200 | 150 | 110 | 88 | 18 | 3 | 4x18 | 85 | 12 |
50 | 230 | 165 | 125 | 102 | 18 | 3 | 4x18 | 95 | 17 | 230 | 165 | 125 | 102 | 20 | 3 | 4x18 | 95 | 17 | 230 | 165 | 125 | 102 | 20 | 3 | 4x18 | 95 | 17 |
65 | 290 | 185 | 145 | 122 | 18 | 3 | 8x18 | 110 | 22 | 290 | 185 | 145 | 122 | 22 | 3 | 8x18 | 110 | 22 | 290 | 185 | 145 | 122 | 22 | 3 | 8x18 | 110 | 22 |
80 | 310 | 200 | 160 | 138 | 20 | 3 | 8x18 | 130 | 39 | 310 | 200 | 160 | 138 | 24 | 3 | 8x18 | 130 | 39 | 310 | 200 | 160 | 138 | 24 | 3 | 8x18 | 130 | 39 |
100 | 350 | 220 | 180 | 158 | 20 | 3 | 8x18 | 155 | 52 | 350 | 235 | 190 | 162 | 24 | 3 | 8x22 | 155 | 52 | 350 | 235 | 190 | 162 | 24 | 3 | 8x18 | 155 | 52 |
125 | 400 | 250 | 210 | 188 | 22 | 3 | 8x18 | 165 | 85 | 400 | 270 | 220 | 188 | 26 | 3 | 8x26 | 165 | 85 | 400 | 270 | 220 | 188 | 26 | 3 | 8x18 | 165 | 85 |
150 | 480 | 285 | 240 | 212 | 22 | 3 | 8x22 | 215 | 150 | 480 | 300 | 250 | 218 | 28 | 3 | 8x26 | 215 | 150 | 480 | 300 | 250 | 218 | 28 | 3 | 8x26 | 215 | 150 |
200 | 600 | 340 | 295 | 268 | 24 | 3 | 12x22 | 285 | 268 | 600 | 360 | 310 | 278 | 30 | 3 | 12x26 | 285 | 268 | 600 | 375 | 220 | 285 | 34 | 3 | 12x30 | 285 | 268 |
250 | 730 | 405 | 355 | 320 | 26 | 3 | 12x26 | 325 | 730 | 425 | 370 | 335 | 32 | 3 | 12x30 | 325 | 730 | 450 | 385 | 345 | 38 | 3 | 12x33 | 325 | |||
300 | 850 | 460 | 410 | 378 | 28 | 4 | 12x26 | 365 | 850 | 485 | 430 | 395 | 34 | 4 | 16x30 | 365 | 850 | 515 | 450 | 410 | 42 | 4 | 16x33 | 365 | |||
350 | 900 | 520 | 470 | 428 | 30 | 4 | 16x26 | ------ | ------ | 900 | 555 | 490 | 450 | 38 | 4 | 16x33 | ------ | ------ | 900 | 580 | 510 | 465 | 46 | 4 | 16x36 | ------ | ------ |
400 | 1100 | 580 | 525 | 490 | 32 | 4 | 16x30 | ----- | ----- | 1100 | 620 | 550 | 505 | 40 | 4 | 16x36 | ----- | ----- | 1100 | 660 | 585 | 535 | 50 | 4 | 16x39 | ----- | ----- |