Seals used in potable water systems must not leach harmful substances or support microbial growth. FITCO supplies WRAS-approved (UK), KTW/W270 (Germany) and NSF 61 compliant O-Rings for use in water meters, valves, fittings and treatment plant equipment.
Regulatory Compliance
- WRAS (Water Regulations Advisory Scheme) — UK
- KTW/W270 — German drinking water approval
- NSF/ANSI 61 — North American standard
- ACS — French approval for contact with drinking water
Recommended Materials
- EPDM — Most widely used material for potable water; WRAS approved grades available
- Silicone — For elevated temperatures in water heating applications
- NBR — Where water contact is not direct; non-potable applications
Applications
- Water meters and flow measurement
- Ball valves and gate valves in distribution networks
- Water treatment plant equipment
- Pressure reducing valves and regulators
- Desalination plant components
- Swimming pool and spa filtration