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Coupling double flap swing check valve
Product Type: H76H / W
Nominal Diameter: NPS 2 "~ 60", DN50 ~ 1500mm
Pressure Range: Class150 ~ 600Lb, PN10 ~ 100MPa
Working Temperature: -29 ℃ ~ +425 ℃
Main Body Material: Carbon Steel, Stainless Steel, Alloy Steel
Design standard: API6D, JB / T8937, API594
Structure length: API594, JB / T8937
Connection standard: ASME B16.5, GB / T 9113, JB / T79, HG / T 20592
Pressure test: API 598, GB / T 13927 , JB / T 9092
Pressure - Temperature class: ASME B16.34, GB / T12224

Features

1, the product structure of short length, small size, light weight.

2, the sealing flap can be selected according to different working conditions, soft sealing or hard sealing material, good sealing performance.

3, horizontal or vertical pipe can be used, easy to install.

4, the valve closed quickly, water hammer pressure is small.

5, the material of parts and the valve end face form, size according to the actual conditions or user requirements reasonable matching, to meet the needs of various projects.


 The main dimensions

PN caliber Size (mm) Weight (kg)

Piping flange (for reference)

NPS DN L D D 3 D 2 Bolt hole 
center circle diameter D 1 		Number of bolts Bolt diameter d Bolt length L 1
in mm RF RJ
Class 150 
PN2.0MPa 		2 50 60 103 56 51 2 120.5 4 5/8 M16 140 155
2 1/2 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 1 1/8 M30 365 380
20 500 219 604 505 500 163 635.0 20 1 1/8 M30 385 400
24 600 222 715 605 600 331 749.5 20 1 1/4 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 1 1/8 M30 740 -
Class 300 
PN5.0MPa 		2 50 60 110 58 51 3 127.0 8 5/8 M16 155 175
2 1/2 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 1 1/8 M30 365 385
14 350 222 483 355 350 117 514.5 20 1 1/8 M30 410 430
16 400 232 537 405 400 190 571.5 20 1 1/4 M33 435 455
18 450 264 594 455 450 200 628.5 24 1 1/4 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 1 1/2 M39 560 -
30 750 368 882 740 735 660 921.0 36 1 3/8 M36 650 -
36 900 483 1044 880 873 1020 1089.0 32 1 5/8 M42 800 -
42 1050 568 1196 1045 1035 1540 1244.5 36 1 3/4 M45 920 -
48 1200 629 1365 1190 1179 2260 1416.0 40 1 7/8 M48 1010 -


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