External Manholes

Product Overview

Our thermoplastic manholes are highly corrosion resistant and are the direct improved alternative to concrete, brick and lower quality plastics.

Manufactured and tested to BS EN 13598 as required by Sewers for Adoption 7th Edition, certified by the BBA & WRc for sizes ranging up to 3 metres in diameter x 6 metres deep.

We offer bespoke and standard sizes in rectangular or circular form, manufactured offsite for fast track installation, with branch connections configured to suit project specific drainage layouts.

Contractors and designers are seeking alternative methods of construction to provide high quality factory manufactured products as an alternative to traditional build methods and materials. Our thermoplastic, offsite built manholes are delivered to site as complete, factory tested manholes ready for fast track installation. Optional extras include shuttering, rebar reinforcement, safety chain (Client specific), manhole steps / toe holes, ladders, and additional blanked connections for future requirements.

Materials of Manufacture

  • Polypropylene (PPH)
  • High Density Polyethylene (HDPE)


  • Bespoke and standard sizes manufactured offsite for fast track installation
  • Manufactured to meet BS13589-2 and BS7158 and compliant with sewers for adoption
  • Improved safety – no confined space entry required
  • Smooth internal bores prevent the build-up of FOG (fats, oils and greases) suitable for pressure jetting and sealed against odours
  • Impact resistance, durability and structural integrity accessed to BS EN 13598-2
  • BBA “HAPAS” & WRc approved

For more information please contact our technical expert: [email protected]

Relevant resources

  • Flyers


  • FGS PXT External Manhole Flyer
All Pipex Flow and Environmental Solutions Products

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