Materials of Construction
| SL. No. | Description | Material |
| 1 | BODY | CI / DI / WCB / CF8 / CF8M |
| 2 | DISC / PLATE | DI / WCB / CF8 / CF8M |
| 3 | HINGE PIN | SS 410 / 304 / 316 / 431 |
| 4 | STOP PIN | SS 410 / 304 / 316 / 431 |
| 5 | PLUG | CARBON STEEL |
| 6 | BODY SEAT | LTB-2 / SS / NICKEL WELD OVERLAY |
| 7 | DISC SEAT FACING | EPDM / SS / NICKEL WELD OVERLAY |
| 8 | SPRING | STAINLESS STEEL |
| 9 | BODY LUG BEARING | LT BRONZE / SS |
| 10 | DISC LUG BEARING | LT BRONZE / SS |
| 11 | LIFTING HOOK (ABOVE 200 NB) | CARBON STEEL |
Design Features
| SIZE RANGE | 50 MM TO 2000 MM |
| PRESSURE RATING | PN 1.0, PN 1.6 |
| DESIGN STANDARD | API 594 / API 6D |
| TESTING STANDARD | API 598 |
| FLANGE ENDS | BS / IS / ANSI / DIN |
| MATERIAL | CI / DI / CS / SS |