Caliper Overseas is a reliable Dual Plate Check Valve Manufacturer and Supplier from India, recognised for providing high-performance industrial valves. Dual Plate Check Valve is a non-return valve with two spring-loaded plates that open up under forward flow and close immediately to avoid backflow. Such valves are compact, light in weight, and energy-saving; hence perfect for those pipelines where low-pressure drop together with high durability is required.
Manufactured to meet global standards such as ISO 9001, CE, API 594, API 6D, and API 6FA, these valves ensure top-tier reliability and safety. Fire-safe certificates such as ISO 10497 and API 607 can also be provided, with TR CU certification being possible for specific markets. Easy installation, low maintenance, long life, and resistance to corrosion are some of the key features. Opt for trustworthy, certified valves that conform to international standards—get in touch now for the best-fit solutions for you.

| Design Standards | API594/ API6D |
|---|---|
| Size Range | NPS 2 to NPS 48 |
| Valve Size | 2″–76″ DN50–DN1900 |
| Pressure Class | 150LB to 2500LB PN10 to PN250 |
| Materials | WCB, CF8, CF3, CF8M, CF3M, B148, A105, LF2, F304, F316 |
| Design and Manufacturing Standards | API6D |
| Face to Face Standards | ASME B16.10 |
| Flange Dimension Standards | ASME B 16.5, ASME B16.47, EN1092-1 |
| Pressure Test Standards | API598, API 6D |
| Fire Safety Test Standards | API607 |
| Process Connection Types | Wafer Type, Flange Type, Lug Type |
| Bore | Full Bore |
| Application & uses | Water distribution Water treatment Wastewater Dams Power plants Industry |
| NPS | CLass | |||||
| 150 | 300 | 600 | 900 | 1500 | 2500 | |
| 2 | 60 | 60 | 60 | 70 | 70 | 70 |
| 2.1/2 | 67 | 67 | 67 | 83 | 83 | 83 |
| 3 | 73 | 73 | 73 | 83 | 83 | 86 |
| 4 | 73 | 73 | 79 | 102 | 102 | 105 |
| 6 | 98 | 98 | 136 | 159 | 159 | 159 |
| 8 | 127 | 127 | 165 | 206 | 206 | 206 |
| 10 | 146 | 146 | 213 | 241 | 248 | 254 |
| 12 | 181 | 181 | 229 | 292 | 305 | 305 |
| 14 | 184 | 222 | 273 | 356 | 356 | |
| 16 | 191 | 232 | 305 | 384 | 384 | |
| 18 | 203 | 264 | 362 | 451 | 468 | |
| 20 | 219 | 292 | 368 | 451 | 533 | |
| 24 | 222 | 318 | 438 | 495 | 559 | |
| 30 | 305 | 368 | 505 | |||
| 36 | 368 | 483 | 635 | |||
| 42 | 432 | 568 | 701 | |||
| 48 | 524 | 629 | ||||
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