Grey Straight-Through Drainage Access Junction with Square Cover

A straight-through drainage access junction Revit family featuring a cylindrical inspection chamber body and a square flush-fitting top cover plate. This plumbing component represents an inline access junction or inspection chamber designed for subterranean or slab-level pipework networks. The unit comprises a cylindrical lower sump chamber fitted with opposing circular pipe connection apertures for straight-through flow alignment. A square top access cover plate extends beyond the chamber perimeter, detailed with a subtle inset border to represent a cleanout or rodding access hatch. Rendered in a neutral matte grey tone, the geometry delivers clean topological faces and clearly demarcated junction seams suitable for technical coordination.

The download is a 512 KB file containing a Revit family (.rfa). Load it into a project from the Insert tab with Load Family, then place it like any other component of its category; it schedules and tags with the rest of your model.

Load this RFA family into MEP or architectural Revit projects to represent below-slab drainage junctions, inspection pits, or cleanout points. Align the cylindrical chamber with gravity drainage runs, connecting pipework to the modelled lateral openings. In composite floor or ground slab sections, align the top plate flush with finished floor or external paving datums. Material parameters can be reassigned to match ductile iron, cast aluminium, or polypropylene specifications.

Essential for commercial facilities, industrial plants, residential basements, and external civil drainage schemes, this fitting accommodates inspection and rodding access along critical waste runs. MEP engineers and BIM coordinators frequently search for inline drainage cleanout, square access hatch, subterranean inspection chamber, and straight pipe junction family when completing coordination models. The unit pairs seamlessly with horizontal waste pipes, cast iron soil systems, floor gullies, and plant room drainage layouts during schematic design through construction documentation.