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Klargester BioTec P9 (up to 9 people)

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Free UK Delivery!  Sewage Treatment Best Price Guaranteed


Get an exclusive 2 year extended warranty on your Klargester BioTec only with Direct Drainage.


Current Leadtime 5 Working Days


 Klargester BioTec P6 - P18 Installation Guide

 Klargester BioTec Data Sheet

 Klargester BioTec P6 - P12 IPS Outlet Technical Drawing

 Klargester BioTec P6 - P12 Gravity Technical Drawing

 Klargester BioTec Certificate of Conformance


For domestic dwellings without access to mains drainage, the Klargester BioTec P9 provides quality, reliability and peace of mind and is one of the most popular systems from this leading UK manufacturer.


The Klargester BioTec P9 comes with an efficient air blower, control panel, loss of pressure/pump alarm and free UK delivery with optional HI-AB offloading.


Model Number:  P9
Max. Number of Full-Time Residents: 9
BOD Load (kg/day): 0.36
Weight when Empty (kg): 275
Outside Diameter (mm): 1900
Depth (mm): 2700
Standard Inlet Invert (m)*: 1.0
Inlet Invert to Base (m): 1.2
Outlet Invert Gravity Systems (m)**: 1.1
Motor Rating (watts): 60
Drainage Connections (mm): 110


*There are two depths of inlet in the range 1.0m and 1.5m.

**0.605m on IPS models.
Under normal domestic conditions a discharge of 20mg/l BOD, 30mg/l SS and 20mg/l ammonia can be achieved.


Klargester BioTec P9 - Sizing Your System

Browse the alternative sizes of Klargester BioDisc sewage treatment systems available via the links below:


BioTec 1 - P6 (up to 6 population)

BioTec P9 (up to 9 population)

BioTec 2 - P12 (up to 12 population)

BioTec 3 - P18 (up to 18 population)

BioTec 4 - P25 (up to 25 population)


Find out how the Klargester Biotec P9 works here.

Features of the Biotec P9

The BioTec sewage treatment plant range is fully compliant, tested and approved to BS EN 12566 Part 3 and is CE marked to meet with the latest Construction Products Regulations July 2013. The BioTec is one of the products that pioneered package treatment plant technology and remains one of the most popular sewage treatment plant in the UK & Ireland.


It is ideal for locations where discharge is to sub-surface irrigation, or to a suitable watercourse (where approved by the Regulator), and where a septic tank will not meet the required standards.

    • Includes Loss of Pressure or Pump Alarm as standard to alert you when the compressor is not working

    • Manufactured from robust GRP

    • No mechanical or electrical components within the plant - low running and maintenance costs

    • Comes with a multifunctional control panel for monitoring the system - performance is future-proofed along with any necessary upgrades

    • Externally-mounted blower for simple maintenance, no entry required into the plant

    • Invert level options of 1m or 1.5m making the ideal solution for replacement failing septic tanks, as they are compatible with existing drain depths

    • Low-level visibility pedestrian duty cover - safe for children and pets

    • Suitable for concrete backfill

    • Recommended installation to be located 7m from a habitable building, 10m from a watercourse or 50m from a borehole or well

    • Treats sewage using a traditional elevated filter, a well-established and proven method in a complete packaged solution

    • Ensures compliance with effluent quality

    • Available with a 5-year extended warranty and service plans for continued system care

    • Parts and spares available - please contact us for more details

Contact Direct Drainage for more information on the BioTec range, or visit the Kingspan website



Customers who purchase a Klargester sewage treatment system (up to 12 person) that is eligible for the free first empty promotional campaign must arrange their empty with us within 1 year from the date of the tank being delivered to site. Proof of purchase must be presented upon booking the free empty.

Tanks included in this promotion are linked below:

Klargester BA BioDisc

Klargester BA-X BioDisc

Klargester BB BioDisc

Klargester BioFicient 1

Klargester BioFicient 3

Klargester BioTec P6

Klargester BioTec P9

Klargester BioTec P12

See the full range of sewage treatment systems included in this deal here.

This promotional offer is a limited time deal available for tank orders placed between 1st March and 31st May.

Emptying is subject to availability in Scotland and Wales. In leu of a free empty, we will provide a voucher to the value of £185 for future purchases on Direct Drainage. Please note: Voucher expires 1 year from issue.

The Klargester L range is excluded from this promotion.

If you are unsure on anything or if you would like to book in your free empty please give us a call on 01388 537 050 or email

Free Delivery is available to the whole of the UK Mainland (including Scotland) and is subject to suitable access for a large goods vehicle. 

This product is delivered to the kerb and it is the customers responsibility to provide suitable mechanical offloading facilities (eg. Loader or Excavator) to offload this tank safely. If we can do anything to make your purchase more accommodating call our friendly team on 01388 537 050 or email prior to placing your order.

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