AI-903 WRAS-Approved Double Check Valve
This Series 100 AI-903 double check valve is used to prevent the risk of backflow and back siphonage contamination in domestic dwellings, public and commercial buildings. The smaller sizes should be installed close to the water outlet such as taps, basin taps, showers and toilets to prevent back siphonage contamination to the water supply, should a mains supply pipe burst. The larger sizes are installed in the main cold water supply inside public and commercial buildings. The double check valve is WRAS-Approved.
Pressure/temperature rating based on: BS EN 1254-2
Max operating temperature at 16 bar: 30°C
Max operating temperature at 10.86 bar: 60°C
Max operating temperature: 85°C
Min operating pressure: 0.2 bar
Conforms to: BS EN 13959
Components:
- Body: BS EN 12420 CW602N DZR Copper Alloy
- Cartridge: POM
- Retaining Clip: Aisi 302 Stainless Steel
- O-Ring: Nitrile/EPDM Rubber
- Compression Nut: BS EN 12165 VW617N Brass
- Olive: BS EN 12449 CW508LM Brass
