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ANSI check valves have a top, bottom and middle part, which is convenient when changing direction from upper outlet to lower outlet, and vice versa. When the fluid pressure reaches the preset limit it will close automatically. For economical and reliable performance, please choose these widely used devices to meet your needs.
Product introduction:
ANSI check valves, sometimes called inspection covers, are valves that act as barriers between two separate fluid lines. When one direction is closed, the liquid can be prevented from flowing in both directions. This is very useful for maintaining pressure in systems that do not require constant flow, and it is necessary to control the pressure in certain parts or areas. API check valve has a top, bottom and middle part, which is convenient when changing direction from upper outlet to lower outlet, and vice versa. ANSI check valves are manufactured to strict specifications. It is installed in the pipeline where the fluid flows. When the fluid pressure reaches the preset limit, it will close automatically to keep the flow direction in both directions consistent. For economical, economical and reliable performance, please choose these widely used devices to meet your needs.
Product features:
1. check valve is a valve that only allows one-way flow of fluid. The check valve is designed to allow flow in one direction and prevent flow in the opposite direction. Its function is to open under pressure, not to close under the action of spring like most other valves.
2.api check valve is a double diaphragm spring check valve, which is used to prevent water from flowing back through the pump. Its unique "d" shape helps to ensure a tight seal when closing and facilitates opening and closing with one finger. The handle has four positions and can be rotated in any direction, which is convenient for use in narrow space or difficult to reach places.
3. check valve is a valve used to prevent fluid backflow. They can be used to prevent reverse flow or to prevent water from flowing from the supplier into the pump below its expected flow rate. The check valve will also close without pressure to prevent unnecessary backflow through the partially closed control valve and excessive system pressure downstream of the valve. Check valves are usually used at the end of the supply line of one-way systems, such as spray guns and equipment shutdown systems.
4. The API check valve is designed to prevent the fluid from flowing in one direction, or flowing back to the oil well, or through the pipeline. Its working principle is to prevent fluid from flowing through the valve body and allow overpressure caused by equipment defects to be safely discharged into the atmosphere. They are usually installed on valves, fittings or pipelines, including natural gas pipelines, liquid pipelines and air pipelines. Pressure check valve is generally used in the liquid pipeline of high-pressure system. The pressure action check valve is installed at the place with the highest pressure to prevent the backflow of liquid and gas. This type of actuator uses the pressure of two liquids or one main liquid to reach atmospheric pressure.
5. the check valve is a simple device to prevent fluid flow. The pressure on both sides of the check valve must be balanced. In liquid systems, it is used as a check valve in applications where the liquid only needs to flow in one direction. Some check valves incorporate an open vent to prevent backflow into the pipeline. The check valve is used to prevent flow in the pipeline. These valves have no moving parts, but rely on pressure drop or gravity to open or close the valve. Check valves are not fail safe, so an upstream valve is required to provide complete protection.
Specifications:
DESIGN & MANUFACTURING STANDARDS | |
---|---|
Basic Design | API 6D & ANSI B16.34 |
Wall Thickness | API 6D |
Face-to-Face Dimension | ANSI/ASME B16.10 |
Flange End Dimension | ANSI/ASME B16.5 (2’ to 24”) MSS SP-44 (26”>) |
Butt-Weld End Dimension | ANSI/ASME B16.25 |
Inspection & Testing | API 6D |
SIZE | IN | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | 36 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MM | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | 900 | |
A - RF | IN | 8.0 | 9.5 | 9.5 | 11.5 | 14.0 | 19.5 | 24.5 | 27.5 | 31.0 | 34.0 | 38.5 | 38.5 | 51.0 | 57.0 | 60.0 | 77.0 |
MM | 203 | 241 | 241 | 292 | 356 | 495 | 622 | 699 | 787 | 864 | 978 | 978 | 1295 | 1448 | 1524 | 1956 | |
A - BW | IN | 8.0 | 9.5 | 9.5 | 11.5 | 14.0 | 19.5 | 24.5 | 27.5 | 31.0 | 34.0 | 38.5 | 38.5 | 51.0 | 57.0 | 60.0 | 77.0 |
MM | 203 | 241 | 241 | 292 | 356 | 495 | 622 | 699 | 787 | 864 | 978 | 978 | 1295 | 1448 | 1524 | 1956 | |
F | IN | 2.01 | / | 2.99 | 4.02 | 5.98 | 7.99 | 9.92 | 11.89 | 13.15 | 15.28 | 17.17 | 19.29 | 23.31 | / | / | / |
MM | 51 | / | 76 | 102 | 152 | 203 | 252 | 302 | 334 | 388 | 436 | 490 | 592 | / | / | / | |
H1 | IN | 1.93 | 4.02 | 2.56 | 3.19 | 4.21 | 5.59 | 6.77 | 7.56 | 8.9 | 9.76 | 10.83 | 12.13 | 14.37 | 21 | 22.5 | 26 |
MM | 49 | 102 | 65 | 81 | 107 | 142 | 172 | 192 | 226 | 248 | 275 | 308 | 365 | 533 | 571 | 600 | |
H2 | IN | 4.25 | 6.4 | 5.67 | 6.89 | 9.45 | 11.14 | 14.37 | 16.3 | 17.8 | 19.37 | 20.79 | 22.74 | 27.17 | 40.0 | 45.2 | 53.1 |
MM | 108 | 163 | 144 | 175 | 240 | 283 | 365 | 414 | 452 | 492 | 528 | 575 | 690 | 1016 | 1149 | 1349 | |
WGT (RF) |
LB | 35 | 49 | 66 | 97 | 172 | 260 | 520 | 758 | 930 | 1398 | 1799 | 2165 | 3925 | 4521 | 4644 | 7389 |
KG | 16 | 22 | 30 | 44 | 78 | 118 | 236 | 344 | 422 | 634 | 816 | 982 | 1780 | 2050 | 2108 | 3350 | |
WGT (BW) |
LB | 26 | 33 | 46 | 57 | 137 | 201 | 450 | 646 | 776 | 1195 | 1579 | 1879 | 3528 | 4300 | 4424 | 6946 |
KG | 12 | 15 | 21 | 26 | 62 | 91 | 204 | 293 | 352 | 542 | 716 | 852 | 1600 | 1950 | 2008 | 3150 |
DIMENSIONAL DATA
Full Port Swing Check Valves - API 6D
Sizes: 2" - 36"
Class: 300
SIZE | IN | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | 36 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MM | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | 900 | |
A - RF | IN | 10.5 | 12.5 | 12.5 | 14.0 | 17.5 | 21.0 | 24.5 | 28.0 | 33.0 | 34.0 | 38.5 | 40.0 | 53.0 | 59.0 | 62.75 | 82.0 |
MM | 267 | 318 | 318 | 356 | 445 | 553 | 622 | 711 | 838 | 864 | 978 | 1016 | 1346 | 1499 | 1594 | 2083 | |
A - BW | IN | 10.5 | 12.5 | 12.5 | 14.0 | 17.5 | 21.0 | 24.5 | 28.0 | 33.0 | 34.0 | 38.5 | 40.0 | 53.0 | 59.0 | 62.75 | 82.0 |
MM | 267 | 318 | 318 | 356 | 445 | 553 | 622 | 711 | 838 | 864 | 978 | 1016 | 1346 | 1499 | 1594 | 2083 | |
F | IN | 2.01 | / | 2.99 | 4.02 | 5.98 | 7.99 | 9.92 | 11.89 | 13.15 | 15.28 | 17.17 | 19.29 | 23.31 | / | / | / |
MM | 51 | / | 76 | 102 | 152 | 203 | 252 | 302 | 334 | 388 | 436 | 490 | 592 | / | / | / | |
H1 | IN | 1.89 | 4.0 | 2.56 | 3.11 | 4.21 | 5.59 | 6.5 | 7.99 | 9.13 | 10.04 | 11.22 | 12.28 | 14.76 | 21 | 22.5 | 26 |
MM | 48 | 102 | 65 | 79 | 107 | 142 | 165 | 203 | 232 | 255 | 285 | 312 | 375 | 533 | 571 | 600 | |
H2 | IN | 4.41 | 7.1 | 5.83 | 7.09 | 9.88 | 12.28 | 14.76 | 16.73 | 18.23 | 19.88 | 21.3 | 23.03 | 27.52 | 45.2 | 50.0 | 60.6 |
MM | 112 | 180 | 148 | 180 | 251 | 312 | 375 | 425 | 463 | 505 | 541 | 585 | 699 | 1149 | 1270 | 1540 | |
WGT (RF) |
LB | 53 | 82 | 99 | 150 | 302 | 485 | 595 | 1092 | 1498 | 2095 | 2646 | 3304.5 | 4851 | 6174 | 7497 | 11025 |
KG | 24 | 37 | 45 | 68 | 137 | 220 | 270 | 495 | 680 | 950 | 1200 | 1500 | 2200 | 2800 | 3400 | 5000 | |
WGT (BW) |
LB | 46 | 77 | 77 | 112 | 242 | 401 | 463 | 1014 | 1157 | 1764 | 2139 | 2688 | 3925 | 5292 | 6505 | 9482 |
KG | 21 | 35 | 35 | 51 | 110 | 182 | 210 | 460 | 525 | 800 | 970 | 1220 | 1780 | 2400 | 2950 | 4300 |
DIMENSIONAL DATA
Full Port Swing Check Valves - API 6D
Sizes: 2" - 30"
Class: 600
SIZE | NPS | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | 36 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DN | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | 900 | |
A - RF | IN | 11.5 | 14.0 | 14.0 | 17.0 | 22.0 | 26.0 | 31.0 | 33.0 | 35.0 | 39.0 | 43.0 | 47.0 | 55.0 | 63.0 | 65.0 | / |
MM | 292 | 356 | 356 | 432 | 559 | 660 | 787 | 838 | 889 | 991 | 1092 | 1194 | 1397 | 1600 | 1651 | / | |
A - RTJ | IN | 11.62 | 14.12 | 14.12 | 17.12 | 22.12 | 26.12 | 31.12 | 33.12 | 35.12 | 39.12 | 43.12 | 47.25 | 55.38 | 63.5 | 65.5 | / |
MM | 295 | 359 | 359 | 435 | 562 | 664 | 791 | 841 | 892 | 994 | 1095 | 1200 | 1407 | 1613 | 1664 | / | |
A - BW | IN | 11.5 | 14.0 | 14.0 | 17.0 | 22.0 | 26.0 | 31.0 | 33.0 | 35.0 | 39.0 | 43.0 | 47.0 | 55.0 | 63.0 | 65.0 | / |
MM | 292 | 356 | 356 | 432 | 559 | 660 | 787 | 838 | 889 | 991 | 1092 | 1194 | 1397 | 1600 | 1651 | / | |
F | IN | 2.01 | / | 2.99 | 4.02 | 5.98 | 7.99 | 9.92 | 11.89 | 13.15 | 15.28 | 17.17 | 19.29 | 23.31 | / | / | / |
MM | 51 | / | 76 | 102 | 152 | 203 | 252 | 302 | 334 | 388 | 436 | 490 | 592 | / | / | / | |
H1 | IN | 2.09 | 4.0 | 2.72 | 3.89 | 4.69 | 6.14 | 7.36 | 8.46 | 9.72 | 10.59 | 11.89 | 12.99 | 15.47 | 23.5 | 27.5 | / |
MM | 53 | 102 | 69 | 86 | 119 | 156 | 187 | 215 | 247 | 269 | 302 | 330 | 393 | 597 | 698 | / | |
H2 | IN | 4.92 | 8.6 | 6.36 | 7.48 | 10.51 | 13.43 | 15.87 | 18.23 | 20.67 | 22.24 | 24.69 | 26.69 | 31.34 | 53.1 | 56.3 | / |
MM | 125 | 219 | 161.5 | 190 | 267 | 341 | 403 | 463 | 525 | 565 | 627 | 678 | 796 | 1349 | 1429 | / | |
WGT (RF) |
LB | 88 | 121 | 159 | 254 | 551 | 926 | 1349 | 1786 | 2426 | 3638 | 3969 | 6168 | 7197 | 9041 | 11025 | / |
KG | 40 | 55 | 72 | 115 | 250 | 420 | 612 | 810 | 1100 | 1650 | 1800 | 2800 | 3264 | 4100 | 5000 | / | |
WGT (BW) |
LB | 68 | 99 | 132 | 176 | 452 | 805 | 1085 | 1577 | 1940 | 2955 | 3197 | 5177 | 5654 | 7718 | 9482 | / |
KG | 31 | 45 | 60 | 80 | 205 | 365 | 492 | 715 | 880 | 1340 | 1450 | 2350 | 2564 | 3500 | 4300 | / |
DIMENSIONAL DATA
Full Port Swing Check Valves - API 6D
Sizes: 2" - 30"
Class: 900
SIZE | IN | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | 36 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MM | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | 900 | |
A - RF | IN | 14.5 | 15.0 | 15.0 | 18.0 | 24.0 | 29.0 | 33.0 | 38.0 | 40.5 | 44.5 | 48.0 | 52.0 | 61.0 | 69.0 | 73.0 | / |
MM | 368 | 381 | 381 | 457 | 610 | 737 | 838 | 965 | 1029 | 1130 | 1219 | 1321 | 1549 | 1753 | 1854 | / | |
A - RTJ | IN | 14.62 | 16.62 | 16.62 | 18.12 | 24.12 | 29.12 | 33.12 | 38.12 | 40.88 | 44.88 | 48.5 | 52.5 | 61.75 | 69.9 | 73.9 | / |
MM | 371 | 422 | 422 | 460 | 613 | 740 | 841 | 968 | 1038 | 1140 | 1232 | 1333 | 1568 | 1775 | 1876 | / | |
A - BW | IN | 14.5 | 15.0 | 15.0 | 18.0 | 24.0 | 29.0 | 33.0 | 38.0 | 40.5 | 44.5 | 48.0 | 52.0 | 61.0 | 69.0 | 73.0 | / |
MM | 368 | 381 | 381 | 457 | 610 | 737 | 838 | 965 | 1029 | 1130 | 1219 | 1321 | 1549 | 1753 | 1854 | / | |
F | IN | 2.05 | / | 2.99 | 4.02 | 5.98 | 7.99 | 9.92 | 12.01 | 12.68 | 14.68 | / | / | / | / | / | / |
MM | 52 | / | 76 | 102 | 152 | 203 | 252 | 305 | 322 | 373 | / | / | / | / | / | / | |
H1 | IN | 4 | 5 | 3.03 | 3.7 | 8.86 | 6.42 | 7.72 | 8.98 | 10 | 10.83 | 16.5 | 18.0 | 26.5 | 25.25 | 30 | / |
MM | 61 | 127 | 77 | 94 | 225 | 163 | 196 | 228 | 254 | 275 | 419 | 457 | 546 | 641 | 762 | / | |
H2 | IN | 5.2 | 13.7 | 7.28 | 8.86 | 11.69 | 14.96 | 17.4 | 20 | 23.66 | 24.02 | 36.3 | 41.4 | 47.2 | 55.1 | 61.8 | / |
MM | 132 | 349 | 185 | 225 | 297 | 380 | 442 | 508 | 601 | 610 | 921 | 1051 | 1200 | 1400 | 1569 | / | |
WGT (RF) |
LB | 154 | 243 | 243 | 471 | 838 | 1375 | 2536 | 3197 | 3859 | 5336 | 7166 | 8820 | 12789 | 17309 | 19955 | / |
KG | 70 | 110 | 110 | 214 | 380 | 624 | 1150 | 1450 | 1750 | 2420 | 3250 | 4000 | 5800 | 7800 | 9050 | / | |
WGT (BW) |
LB | 110 | 192 | 187 | 383 | 662 | 1088 | 2095 | 2602 | 3197 | 4520 | 5954 | 7275 | 9923 | 14663 | 16868 | / |
KG | 50 | 87 | 85 | 174 | 300 | 494 | 950 | 1180 | 1450 | 2050 | 2700 | 3300 | 4500 | 6650 | 7650 | / |
DIMENSIONAL DATA
Full Port Swing Check Valves - API 6D
Sizes: 2" - 24"
Class: 1500
SIZE | IN | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 30 | 36 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MM | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 750 | 900 | |
A - RF | IN | 14.5 | 18.5 | 18.5 | 21.5 | 27.75 | 32.75 | 39.0 | 44.5 | 49.5 | 54.5 | 60.5 | 65.5 | 76.5 | / | / |
MM | 368 | 470 | 470 | 546 | 705 | 832 | 991 | 1130 | 1257 | 1383 | 1537 | 1664 | 1943 | / | / | |
A - RTJ | IN | 14.62 | 18.62 | 18.62 | 21.62 | 28.0 | 33.13 | 39.38 | 45.12 | 50.25 | 55.38 | 61.38 | 66.38 | 77.62 | / | / |
MM | 371 | 473 | 473 | 549 | 711 | 841 | 1000 | 1146 | 1276 | 1407 | 1559 | 1686 | 1972 | / | / | |
A - BW | IN | 14.5 | 18.5 | 18.5 | 21.5 | 27.75 | 32.75 | 39.0 | 44.5 | 49.5 | 54.5 | 60.5 | 65.5 | 76.5 | / | / |
MM | 368 | 470 | 470 | 546 | 705 | 832 | 991 | 1130 | 1257 | 1383 | 1537 | 1664 | 1943 | / | / | |
F | IN | 2.01 | / | 2.99 | 4.02 | 5.75 | 7.64 | 9.53 | 15.35 | / | / | / | / | / | / | / |
MM | 51 | / | 76 | 102 | 146 | 194 | 242 | 390 | / | / | / | / | / | / | / | |
H1 | IN | 2.83 | 5.25 | 3.5 | 4.17 | 5.43 | 6.93 | 8.35 | 9.76 | 16.25 | 17.25 | 19.0 | 20.5 | 24.0 | / | / |
MM | 72 | 133 | 89 | 106 | 138 | 176 | 212 | 248 | 412 | 438 | 482 | 520 | 609 | / | / | |
H2 | IN | 6.61 | 13.7 | 8.82 | 10.32 | 13.27 | 16.63 | 19.69 | 20.98 | 40.8 | 42.0 | 47.1 | 51.1 | 57.1 | / | / |
MM | 168 | 349 | 224 | 262 | 337 | 422.5 | 500 | 553 | 1035 | 1067 | 1197 | 1299 | 1451 | / | / | |
WGT (RF) |
LB | 154 | 243 | 375 | 662 | 1531 | 2624 | 4079 | 7336 | 7938 | 10805 | 14553 | 17971 | 25909 | / | / |
KG | 70 | 110 | 170 | 300 | 695 | 1190 | 1850 | 3330 | 3600 | 4900 | 6600 | 8150 | 11750 | / | / | |
WGT (BW) |
LB | 110 | 192 | 298 | 540 | 1234 | 2128 | 3263. | 6080 | 6251 | 8599 | 11576 | 14222 | 19845 | / | / |
KG | 50 | 87 | 135 | 245 | 560 | 965 | 1480 | 2760 | 2835 | 3900 | 5250 | 6450 | 9000 | / | / |
DIMENSIONAL DATA
Full Port Swing Check Valves - API 6D
Sizes: 2" - 16"
Class: 2500
SIZE | IN | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 30 | 36 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MM | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 750 | 900 | |
A - RF | IN | 17.75 | 22.75 | 22.75 | 26.5 | 36.0 | 40.25 | 42.13 | 56.0 | 62.0 | 68.0 | / | / | / | / | / |
MM | 451 | 578 | 578 | 673 | 914 | 1022 | 1070 | 1422 | 1575 | 1727 | / | / | / | / | / | |
A - RTJ | IN | 17.87 | 23.0 | 23.0 | 26.88 | 36.5 | 40.87 | 50.88 | 56.88 | 62.88 | 68.88 | / | / | / | / | / |
MM | 454 | 584 | 584 | 683 | 927 | 1038 | 1292 | 1445 | 1597 | 1750 | / | / | / | / | / | |
A - BW | IN | 17.75 | 22.75 | 22.75 | 26.5 | 36.0 | 40.25 | 42.13 | 56.0 | 62.0 | 68.0 | / | / | / | / | / |
MM | 451 | 578 | 578 | 673 | 914 | 1022 | 1070 | 1422 | 1575 | 1727 | / | / | / | / | / | |
F | IN | 1.65 | / | 2.44 | 3.42 | 5.16 | 7.05 | 8.78 | 10.43 | / | / | / | / | / | / | / |
MM | 42 | / | 62 | 87 | 131 | 179 | 223 | 265 | / | / | / | / | / | / | / | |
H1 | IN | 3.15 | 6.0 | 3.86 | 4.65 | 5.94 | 7.36 | 9.06 | 10 | 17.5 | 19.25 | / | / | / | / | / |
MM | 80 | 152 | 98 | 118 | 151 | 187 | 230 | 254 | 444 | 489 | / | / | / | / | / | |
H2 | IN | 6.93 | 16.5 | 9.92 | 11.22 | 14.37 | 17.83 | 21.26 | 23.46 | 47.2 | 51.1 | / | / | / | / | / |
MM | 176 | 419 | 252 | 285 | 365 | 453 | 540 | 596 | 1200 | 1299 | / | / | / | / | / | |
WGT (RF) |
LB | 331 | 529 | 772 | 1433 | 3197 | 5622 | 8709 | 12568 | / | / | / | / | / | / | / |
KG | 150 | 240 | 350 | 650 | 1450 | 2550 | 3950 | 5700 | / | / | / | / | / | / | / | |
WGT (BW) |
LB | 225 | 430 | 477 | 839 | 2646 | 4851 | 6946 | 10033 | 13671 | 17861 | / | / | / | / | / |
KG | 102 | 195 | 216 | 381 | 1200 | 2200 | 3150 | 4550 | 6200 | 8100 | / | / | / | / | / |