Seat for Type 57A butterfly valves (DN40-350) and Type 57L lug butterfly valves (DN80-250). Nominal sizes DN40 to DN350; part numbers by Seat EPDM, FKM, FKM-F, FKM-C, CSM, NBR.
| Type | Seat |
| Applicable Valves | Type 57A butterfly valves (DN40-350) and Type 57L lug butterfly valves (DN80-250) |
| Size | DN 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350 |
| Seat Material | EPDM, FKM, FKM-F, FKM-C, CSM, NBR |
| Part Numbers (Seat EPDM) | DN40 S57SEE040 / DN50 S57SEE050 / DN65 S57SEE065 / DN80 S57SEE080 / DN100 S57SEE100 / DN125 S57SEE125 / DN150 S57SEE150 / DN200 S57SEE200 / DN250 S57SEE250 / DN300 S57SEE300 / DN350 S57SEE350 |
| Part Numbers (Seat FKM) | DN40 S57SEV040 / DN50 S57SEV050 / DN65 S57SEV065 / DN80 S57SEV080 / DN100 S57SEV100 / DN125 S57SEV125 / DN150 S57SEV150 / DN200 S57SEV200 / DN250 S57SEV250 / DN300 S57SEV300 / DN350 S57SEV350 |
| Part Numbers (Seat FKM-F) | DN40 S57SEF040 / DN50 S57SEF050 / DN65 S57SEF065 / DN80 S57SEF080 / DN100 S57SEF100 / DN125 S57SEF125 / DN150 S57SEF150 / DN200 S57SEF200 / DN250 S57SEF250 / DN300 S57SEF300 / DN350 S57SEF350 |
| Part Numbers (Seat FKM-C) | DN40 S57SEC040 / DN50 S57SEC050 / DN65 S57SEC065 / DN80 S57SEC080 / DN100 S57SEC100 / DN125 S57SEC125 / DN150 S57SEC150 / DN200 S57SEC200 / DN250 S57SEC250 / DN300 S57SEC300 / DN350 S57SEC350 |
| Part Numbers (Seat CSM) | DN40 S57SEH040 / DN50 S57SEH050 / DN65 S57SEH065 / DN80 S57SEH080 / DN100 S57SEH100 / DN125 S57SEH125 / DN150 S57SEH150 / DN200 S57SEH200 / DN250 S57SEH250 / DN300 S57SEH300 / DN350 S57SEH350 |
| Part Numbers (Seat NBR) | DN40 S57SEN040 / DN50 S57SEN050 / DN65 S57SEN065 / DN80 S57SEN080 / DN100 S57SEN100 / DN125 S57SEN125 / DN150 S57SEN150 / DN200 S57SEN200 / DN250 S57SEN250 / DN300 S57SEN300 / DN350 S57SEN350 |