Page 104 - McD_ROTF DRAINAGE & PIPED SERVICES_Neat

Drainage & Piped Services Standard Specification
Version 2014-1

Copper: Submit proposals.
Lead: Submit proposals.
Cadmium: Submit proposals.
Chromium: Submit proposals.
Mercury: Submit proposals.
Bacteriological characteristics:
Colony count, 72 h at 22°C:
Colony count, 24 h at 37°C:
Coliforms: Submit proposals.
E.coli: Submit proposals.

Products

Stop valves for potable water Capillary;
General requirements: Connections for accessories.
Manufacturer: Submit proposals.
Standard: To BS EN 1213.
Arrangement: Straight.
Material: Copper alloy.
Connections:
Compression;
and Threaded.
Execution: Installation of valves generally.

Underground stop valves
General requirements: Connections for accessories.
Manufacturer: Submit proposals.
Standard: Manufacturer's standard.
Connections: Union ends.
Execution: Installation of valves generally.

Backflow prevention devices type A
General requirements: Connections for accessories.
Manufacturer: Submit proposals.
Standards:
Anti-pollution check valves: To BS EN 13959.
Check valves: To BS 6282-1.
Combined check and anti-vacuum valves: To BS 6282-4.
Hose union: To BS EN 14454.
In-line anti-vacuum valves: To BS EN 14451.
Terminal anti-vacuum valves: To BS 6282-2.
Arrangement: Submit proposals.
Material: Copper alloy.

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