
ST3800 Septic Tank Downloads
- Harlequin ST 3800 Specification Sheet
- Harlequin ST 3800 Product Drawing
- Harlequin WasteWater Treatment Systems Brochure

Product Features click icon to expand






Moulded in one piece from Medium Density Polyethylene (MDPE) and designed in accordance with British Standard Code of Practice BS6297 the ST3800 is a perfect solution for sites where a treatment plant cannot be used. Durability, flat base for stability, moulded in lifting eyes and easy installation are some of the key features of this septic tank. Approved to EN 12566-1 standards, this product is best suited for domestic installations of up to 10 inhabitants.
ST3800
Tank Dimensions
Diameter: 2,045mm
Height: 2,730mm
Capacity: 3,800 L
Population Served: 5-10
Standard Features
Moulded in one piece from durable medium density polyethylene material
110mm inlet and outlet connections
450mm access lid for desludging
Galvanised steel lifting eyes for ease of handling
Adjustable invert level from 860mm (standard) to 440mm (minimum)
Extension neck available for deeper invert levels
110mm connection for rodding access
Durable – Tank is impact resistant as it’s made from Medium Density Polypropylene (MDPE)
Simple Installation – It’s very easy to install.
Stable – Flat and wide base for stability when transporting and installing.
Easy Transportation – Comes with moulded in lifting eyes making it easier to transport.
More Options – Available in 3 different sizes, serving 1-14 inhabitants.
Meets Regulations – EN-12566 Part 1 compliant.
To enquire about the ST3800 Septic Tank please complete the short form, or call us on +44 (0)28 9261 1077.