Potable Water Industry
Description
Elastomers and plastics used in potable water treatment facilities as well as distribution and dispensing eauipment may be subject to many demands. Chlorine has long been used in a disinfectant in water systems, but they can react and form toxic disinfectant byproducts (DBP). Ammonia is often added to reduce the DBP - which react to form chloramines which can be damaging to some elastomers.
Solutions
The most important regulations are:
- KTW - Germany
- WRAS (WRC) - UK
- ACS - France
- FDA - USA
- DVGW - Germany
- KIWA - Holland
- Belgaqua - Belgium
| Elastomer | ACS | DVGW | FDA | KIWA | KTW | NSF | WRAS |
|---|---|---|---|---|---|---|---|
| EPDM | 559003 | 559003 | 559270 559272 | 55940 559003 | 55960 559003 | 55950 559003 | |
| NBR | 366016 | 366472 366490 | 55111 | 366015 366016 | 366016 | 366015 | |
| Genuine Viton® | 514002 | 514670 514674 | 514002 | 514023 | 514001 | ||
| Kalrez® | Kalrez® 6221, 6230 | ||||||
| VMQ | 714767 714768 | 714008 714940 | 714008 | 714950 |