Off-mains drainage product BIM library
 

Ensign sewage treatment plant downloads

Marsh Industries Ensign sewage treatment plant range. Standard and Ultra model 4 – 50PE (Person Equivalent), and Shallow Standard and Ultra model 4 – 35PE (Person Equivalent). Larger population sewage treatment plant can be supplied as multiple tank configurations.

Please note: Ensign Sewage Treatment plant are supplied as standard without turret extensions. For BIM modelling, you will find options for various turret extensions allowing the plant to be placed at various depths within a development, dependent upon ground conditions. Your modelling environment may show a default turret extension, remove it if not required. All of the illustrations in this section depict a standard configuration across the range.

This section contains 12 downloads covering 22 products. Prices correct as of February 2022 for scheme budgeting purposes. Contact Marsh Industries for full details. Additional options are available.

Product Advice:

The tank should be ventilated remotely, we recommend this is positioned at least 5m away from any buildings.

The vent pipe must be elevated above ground to allow for clear airflow, we recommend a minimum height of 18 inches (depending on location/surroundings).

The vent pipe should be fitted with either a mushroom style vent cowl or similar. We advise against having a durgo/air admittance valve as this does not allow clear airflow both ways so can increase odours.

We offer a Polyair Vent which is a carbon filter, It can help to reduce any possible odours.

Related Downloads:


  • Ensign Standard and Ultra 6, 8, 10PE (gravity)
  • Price ranges: 6PE from £1,949 to £2,425
  • 8PE from £2,209 to £2,711
  • 10PE from £2,463 to £2,930
  • Pumped outlets from £448 to £560



  • Ensign Standard and Ultra 40, 45, 50PE (gravity)
  • Price ranges, 40PE from £10,148 to £12,189
  • 45PE from £10,767 to £13,089
  • 50PE from £11,386 to £14,078
  • Pumped outlets from £448 to £560