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Marsh Ultra:Polylok L – 6 and 12

Posted by Robert Gabriel on

Marsh Ultra:Polylok L Industrial performance with domestic simplicity

Introducing the latest innovation in domestic sewage treatment technology, the Marsh Ultra:Polylok L (UPL).

The UPL draws upon Marsh Industries’ extensive experience in the industrial and commercial sewage treatment sectors bringing its outstanding performance and added-value engineering to the domestic sector.

The Marsh UPL is available in 6PE and 12PE models, is approved to BS EN12566-3 and carries an impressive effluent quality of 20:30:20, within national consent standards.

Why choose the Marsh UPL

End users, merchants and installers alike recommend the UPL 6 or 12 due to its compact shape, ease of installation, reliability, and cost-effective operation and maintenance. All backed by technical support from local contacts.


  • Tested and approved to the most stringent European Standards: EN12566-3: 2005+A1:2009
  • Small footprint and shallow dig for easy installation provides enhanced health and safety benefits
  • Heavy duty shell as standard enables installation in all ground conditions. Unique ‘keying-in’ lip assists anchoring into granular or concrete surrounds
  • Near silent, energy efficient compressor (located externally) with integral alarm (approximate annual running costs of £35 p/annum)
  • High specification bio-media (310m3 per m2) and membrane diffuser ensures even circulation and maximum treatment efficiency
  • Unique Polylok tertiary filter reduces suspended solids and BOD by a further 40% helping to extend drainage field life
  • Sludge return pipe improves system circulation
  • Variable inverts for ease of installation at various depths – 250, 500 and 750mm risers available
  • Pumped outlets available


Model (pop) Length
Inlet invert Inlet dia Outlet invert Outlet dia
UPL 6 1700 1700 2050 650 110 725 110
UPL12 2300 2000 2050 650 110 725 110


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