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Ensign Soil

Soil, drain & rainwater

Ensign Soil

Ensign soil banner

A high performing mechanically jointed cast iron drainage system for soil, waste, vent and internal rainwater applications and suspended drainage. Ensign meets the requirements of ISO 6594 offering individual cast iron drainage systems for above ground applications, and is tested and kitemark approved to the product standard BS EN 877. The above ground soil and waste system is coated red.

ensign in-situ ensign in-situ close up

Technical details

  • Diameter range: 50mm to 600mm.
  • Ductile iron couplings up to 300mm.
  • Pressure capability:
    • 50-150mm 5 bar restrained.
    • 200-300mm 3 bar restrained.
  • Pipes are manufactured using the De Lavaud process producing pipes with high mechanical and impact resistant properties and are easier to cut.
  • Coatings:
    • Pipes:
      • Externally coated with an acrylic, anti-corrosive red primer - average dry thickness 40 microns.
      • Internally - two-part epoxy lining, ochre in colour - average thickness 130 microns.
  • Fittings:
    • Externally coated in red epoxy to an average thickness of 70 microns. Internally coated to an average thickness of 150 micron.
Ensign the choice of drainage for QE Hospital, Birmingham
Ensign the choice of drainage for QE Hospital, Birmingham

Key Features & Benefits

  • Proven high performance drainage system that can withstand significantly higher pressures than other materials like HDPE and stainless steel.
  • Excellent fire resistance (See The Burning Question)
  • The quietest drainage solutions (See Acoustic Drainage)
  • Strength and rigidity
  • Excellent range of waste connections including
  • Multi-manifolds in 100 and 150m diameters
  • Proven solution and first choice for prestigious commercial projects, Hospitals, schools, public buildings

Standards & Approvals

  • Kitemark approved to BS EN 877
  • Fire Rating: A1
  • Tested to BS EN 14366: 2004 laboratory measurement of noise from waste water systems
  • CE Marked


Technical Enquiries: 
+44 (0) 1952 262 529
Customer Services:
+44 (0)115 930 5000


Ensign installation
Ensign installation
ensign double branch
Ensign double branch
ensign branch
Ensign branch


(PDF, 20.54 MB)

See also

Saint-Gobain PAM UK specialises in the manufacture of cast iron above and below ground drainage s

Cast iron drainage systems to suit most gravity above ground applications for commercial, residential and public buildings all backed by third party certification.