Internal low-pressure pipe system suitable for use in:

• Domestic.
• Commercial.
• Public buildings.

In accordance with:

• BS EN 12056-2:2000.
• BS EN 12056-3:2000.
• BS EN 752:2008.
• BS EN 877:1999.

Concealed rainwater pipes for above-ground drainage systems for the conveyance by combined or separate systems of surface and above ground rainwater as is permitted to be discharged into public sewers by the Water Industry Act 1991, Chapter 56, the Sewerage (Scotland) Act 1968 and the Water and Sewerage Services (Northern Ireland) Order 1973.

Internal low-pressure pipe system is available to suit a range of couplings comprising a stainless steel collar and an EPDM gasket for jointing aluminium pipes from 50 to 200 mm.

Features and benefits:

The system joints remain watertight under conditions of pipeline movement and have adequate resistance to the type and quantity of chemicals likely to be found in above-ground rainwater drainage. An independent examination of the system satisfied the requirements of BS EN 877:1999 including:

• Properties of EPDM sealing gasket;
• Watertightness at an internal pressure of 5 bar for sizes up to 200Ø;
• Watertightness at a pressure of 0.5 bar;
• Effects of thermal cycling;
• Ease of jointing.