MDPE Communication and Supply Pipes

• Polyethylene Blue up to 63mm [BS 6572]
• Polyethylene – for underground cold water pipes
• PE Barrier Pipe (1 layer of metal + 2 layers of plastic) - supplies cald water to a 'brownfield site'
  
  
• Goose Neck – allows movement of a pipe
• Water Meter
  
• Supplier's External Stop Valve - located just before the boundary

Installation requirements

• Made of PVC-U [BS 3505]
• Pipes below ground SHOULD lay between 750-1350 mm or insulated
• Pipes entering buildings through walls below ground should be in duct and sealed at both ends
• For solid floors, if the pipe rises up inside the building less than 750mm from the outside wall, then vertical section must be insulated
• For suspended floor the pipe should be always insulated in the floor void
• A Main Stop Valve should be provided within 150mm of floor just insid the premises
• A Drain Valve should be fitted just above the Main Stop Valve
• 15mm – MIN size of a cold water service pipe to a dwelling