| Component | Material Specification | Optional Material |
| Body | C.I. IS. - 210 FG - 200 | WCB - ASTM - A - 216, CF8 - ASTM - A 352, CF8M - ASTM - A - 351 |
| Disc | C.I. IS. - 210 FG - 200 | WCB - ASTM - A - 216, CF8 - ASTM - A 352, CF8M - ASTM - A - 351 |
| Shaft | IS - 1570 Grade 40C - 8 | AISI - 410, 304, 316. |
| Seat | Nitrile / EPDM | Neoprene / Silicon / viton. |
| Bush Bearing | Self Lubrication / Sintered Bronze | G. M. / PTFE |
