Application
- Backup water supply control valve.
- The RainAid® valve is designed to be connected to a mains water supply on a rainwater retention tank. It will provide a backup supply of water in the event of demand exceeding rain supply, whilst ensuring maximum rainwater storage at the next rainfall.
Operating Principle
Under normal conditions, rain water will the tank. If the rainwater level drops below a pre-set level, the RainAid® valve will open to maintain the water level using mains water.
Standards
- Certified to Watermark standard AS1910:2004, Lic 20368, SAI Global
- New Zealand patent. 328862
- New Zealand patent. 535912
- Australian patent. 736446
- RSA Patent. 98/8777
- Australian Class II Patent 1025211
Specifications
- Cold mains pressure water connection.
- Minimum inlet pressure 55 kPa (8 P.S.I.).
- Maximum inlet pressure 1000 kPa (150 P.S.I.).
- Maximum water temperature 60°C.
- Supplied with inlet strainer.
Installation
- The RainAid® valve MUST NOT be fitted to tanks used partially or entirely for storm water detention. (Detention is the slow release of water run-off to the storm water drain during and after rainfall events).
- Do not restrict inlet water flow.
- Not to be modified.
- Valve must be installed horizontally.
- Overflow discharge must be visible.
- Overflow and air gap to comply with local standards (air gap of 3 x mains water inlet pipe diameter - 55mm - complies with AS/NZS 3500.1)
- The minimum water level (L) is easily set at any height during installation by adjusting the cord length.
- Cord must hang freely.
- Failure to affix label, supplied with the valve, near the visible overflow discharge will void Warranty.
- Some Australian states stipulate a minimum water level that must be maintained for fire fighting purposes.
- Some Australian states stipulate a visible air gap.
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