For the selected media "Sulfide solution" it's recommended to use the following disk materials: stainless steel with molybdenum CF8M, and the following seats materials: stainless steel with molybdenum CF8M, Viton, PTFE. Also in some cases it's allowed to use rather stable seat materials: EPDM.
You can choose the butterfly valves of PromArm manufacturing from our catalog.
| Disk material | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Concentration | Ductile iron | Carbon steel | stainless steel CF8 | stainless steel CF8M | Aluminum-bronze | |||||
| 6% | - | C | - | A | - | |||||
| Seat material | ||||||||
|---|---|---|---|---|---|---|---|---|
| Concentration | EPDM | NBR | CR | Natural rubber | SILICONE | FKM (Viton) | FFKM | PTFE |
| 6% | B | C | B | - | - | A | - | A |
where: A - excellent, B - good, C - not recommended, * - inaccurate data