All we do is usually affiliated with our tenet ” Buyer to start with, Belief to start with, devoting about the food packaging and environmental defense for 8 Years Exporter China NPT/Bsp/BSPT Thread CF8/CF8m/CF3/CF3m Lift Check Valve, We’re going to endeavor to maintain our great status as the ideal products and solutions supplier while in the world. For those who have any questions or responses, please contact with us freely.
All we do is usually affiliated with our tenet ” Buyer to start with, Belief to start with, devoting about the food packaging and environmental defense for China Check Valve, Stainless Steel Valve, Our company always concentrate on the development of the international market. We’ve got a lot of customers in Russia , European countries, the USA, the Middle East countries and Africa countries. We always follow that quality is foundation while service is guarantee to meet all customers.
Product use
National standard lift check valve is applicable to nominal pressure PN1 6-16.0mpa, working temperature of – 46 ~ 550 ℃ on pipelines in petroleum, chemical industry, pharmaceutical, chemical fertilizer, power industry and other working conditions to prevent medium backflow.
Product features
1. The product has reasonable structure, reliable sealing, excellent performance and beautiful appearance;
2. The sealing surface of valve disc and valve seat is overlaid with Co based cemented carbide, which has good wear resistance, corrosion resistance, scratch resistance and long service life;
3. Part materials and flange and gasket dimensions can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.
Main performance specifications
Design criteria | GB/T 12235 | |||||
Pressure temperature class | GB/T 12224 | |||||
Structure length | GB/T 12221 | |||||
Flange type and size | GB/T 9113、JB/T 79、EN1092、ASME B16.5/B 16.47 | |||||
Inspection and test | JB/T 9092、GB/T13927、API598 | |||||
Test pressure(MPa) | Nominal pressure | PN1.6 | PN2.5 | PN4.0 | PN6.4 | PN10.0 |
Shell test | 2.4 | 3.8 | 6.0 | 9.6 |
15.0 |
|
High pressure seal | 1.8 | 2.8 | 4.4 | 7.1 | 11.0 | |
Low pressure seal | 0.6 |
Material of main parts
No. | Part name | carbon steel | stainless steel | Alloy steel | Low temperature steel |
1 | valve body | WCB | CF8 | WC6 | LCB |
2 | Valve disc | WCB/25 | CF8/F304 | WC6/F11 | LCB/LF2 |
3 | shim | Flexible graphite | Flexible graphite | Flexible graphite | Flexible graphite |
4 | Valve cover | WCB | CF8 | WC6 | LCB |
5 | Double end stud | 35CrMoA | 0Cr18Ni9(304) | 25Cr2MoVA | 35CrMoVA |
6 | Nut | 45# | 0Cr18Ni9(304) | 35CrMoA | 45# |
7 | Spring | 60Si2Mn | 0Cr18Ni9(304) | 0Cr18Ni9(304) | 0Cr18Ni9(304) |
Main overall connection dimensions
DN(mm) | L | D | D1 | D2 | b-f | Z- d | H | WT(kg) |
15 | 130 | 95 | 65 | 45 | 16-2 | 4- 14 | 77 | 3 |
20 | 150 | 105 | 75 | 58 | 18-2 | 4- 14 | 77 | 4 |
25 | 160 | 115 | 85 | 68 | 18-2 | 4- 14 | 80 | 5 |
32 | 180 | 140 | 100 | 78 | 18-2 | 4- 18 | 85 | 7 |
40 | 200 | 150 | 110 | 88 | 18-3 | 4- 18 | 95 | 9 |
50 | 230 | 165 | 125 | 102 | 18-3 | 4- 18 | 105 | 10 |
65 | 290 | 185 | 145 | 122 | 18-3 | 8- 18 | 120 | 20 |
80 | 310 | 200 | 160 | 138 | 20-3 | 8- 18 | 130 | 30 |
100 | 350 | 220 | 180 | 158 | 20-3 | 8- 18 | 140 | 39 |
125 | 400 | 250 | 210 | 188 | 22-3 | 8- 18 | 155 | 50 |
150 | 480 | 285 | 240 | 212 | 22-3 | 8- 22 | 180 | 70 |
200 | 600 | 340 | 295 | 268 | 24-3 | 12 22 | 215 | 161 |
250 | 730 | 405 | 355 | 320 | 26-3 | 12- 26 | 260 | 251 |
300 | 850 | 460 | 410 | 378 | 28-4 | 12- 26 | 315 | 395 |
Main overall connection dimensions
DN(mm) | L | D | D1 | D2 | b-f | Z- d | H | WT(kg) |
15 | 130 | 95 | 65 | 45 | 16-2 | 4- 14 | 100 | 3.4 |
20 | 150 | 105 | 75 | 58 | 18-2 | 4- 14 | 105 | 5 |
25 | 160 | 115 | 85 | 68 | 18-2 | 4- 14 | 120 | 5.7 |
32 | 180 | 140 | 100 | 78 | 18-2 | 4- 18 | 130 | 9.1 |
40 | 200 | 150 | 110 | 88 | 18-3 | 4- 18 | 135 | 11.8 |
50 | 230 | 165 | 125 | 102 | 20-3 | 4- 18 | 149 | 14.4 |
65 | 290 | 185 | 145 | 122 | 22-3 | 8- 18 | 160 | 23 |
80 | 310 | 200 | 160 | 138 | 24-3 | 8- 18 | 169 | 30 |
100 | 350 | 235 | 190 | 162 | 24-3 | 8- 18 | 194 | 44 |
125 | 400 | 270 | 220 | 188 | 26-3 | 8- 18 | 222 | 65 |
150 | 480 | 300 | 250 | 218 | 28-3 | 8- 22 | 255 | 99 |
200 | 600 | 360 | 310 | 278 | 30-3 | 12- 22 | 305 | 190 |
250 | 730 | 425 | 370 | 335 | 32-3 | 12- 26 | 355 | 315 |
300 | 850 | 485 | 430 | 395 | 34-4 | 12- 26 | 410 | 450 |