Oval SOLIDKAN‑O tanks made of prefabricated polymer‑concrete elements, intended for infrastructure applications where increased capacity or non‑standard chamber geometry is required. The design is based on DN1500, DN2000 and DN2500 diameters, with the option of widening using rectangular plates.

Available variants include widths of 1500–2500 mm and extensions of 500–2000 mm. Maximum installation height up to 10 m, with elements above 2–3 m delivered in segments for on‑site assembly. Inlet and outlet connections can be manufactured according to the order specification. Technical documentation and installation instructions are available.