STANDPIPE SPECIFICATION
2 1/2" alloy Standpipe complete. To comply with BS336 or equivalent.

Double Check Valve to comply with BS6282-5 or equivalent.

All components are cast in materials acceptable to the Water Industry and cast in grades LM6/LM4.

Tube material is to BS1474 6082 T6. The outside diameter shall be 21/2" with a wall thickness of 1/8".
 
Standpipe base to be Belfast Thread connections. Base washers to be manufactured from a WRAS approved EPDM or Nitrile material. Outlet to be standard 2 1/2" instantaneous coupling with 360° swivel head.
 
Avoids back siphonage and contamination of mains water supply with approved brass or alloy check valves to BS 6282, Inlet Belfast thread and outlet 2 1/2 inch female instantaneous coupling to BS 336.