For the selected media "Acetic acid" it's recommended to use the following disk materials: stainless steel with molybdenum CF8M, and the following seats materials: stainless steel with molybdenum CF8M, EPDM, PTFE. Also in some cases it's allowed to use rather stable materials. As for disks they are: stainless steel CF8, and as for the seats: stainless steel CF8.
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 | |||||
| 25% | C | C | B | A | C | |||||
| 50% | C | C | - | A | C | |||||
| 85% | C | C | C | A | C | |||||
| C | C | C | A | C | ||||||
| Seat material | ||||||||
|---|---|---|---|---|---|---|---|---|
| Concentration | EPDM | NBR | CR | Natural rubber | SILICONE | FKM (Viton) | FFKM | PTFE |
| 25% | A | C | A | B | B | B* | A | A |
| 50% | A | C | C | - | B | C | - | A |
| 85% | A | C | C | C | B | C | C | A |
| A | C | C | B | B | C | C | A | |
where: A - excellent, B - good, C - not recommended, * - inaccurate data