For the selected media "Perchloroethylene (tetrachloroethylene)" it's recommended to use the following disk materials: carbon steel WCB, and the following seats materials: Viton, PTFE. Also in some cases it's allowed to use rather stable materials. As for disks they are: iron GGG40/GG25, stainless steel CF8, stainless steel with molybdenum CF8M, aluminum-bronze, and as for the seats: stainless steel CF8, stainless steel with molybdenum CF8M.
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 | |||||
| - | B | A | B | B | B | |||||
| Seat material | ||||||||
|---|---|---|---|---|---|---|---|---|
| Concentration | EPDM | NBR | CR | Natural rubber | SILICONE | FKM (Viton) | FFKM | PTFE |
| - | C | C | C | C | C | A | A | A |
where: A - excellent, B - good, C - not recommended, * - inaccurate data