For the selected media "Chlorosulfonic acid" it's recommended to use the following seat materials: FFKM, PTFE. As for the disk there can be applied such materails with some restrictions: Ductile iron.
Please pay attention to the fact, that the exact case of using valves in the conditions of exact working media is unique each time. Therefore to avoid the potential problems while using the butterfly valves we recommend to turn to the specialists of the PromArm Ltd. first by the phone +7 (8412) 35-07-97 or email info@promarm.ru to confirm all the parameters and get the qualified advise.
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 | C | C | C | C | |||||
| Seat material | ||||||||
|---|---|---|---|---|---|---|---|---|
| Concentration | EPDM | NBR | CR | Natural rubber | SILICONE | FKM (Viton) | FFKM | PTFE |
| - | C | C | C | C | C | C | A | A |
where:
A - excellent, B - good, C - not recommended, * - inaccurate data