Słownik
- Drain wand — Hose attachment used to flush downpipes and traps with pressurised water.
- Drain-down valve — Valve fitted at low points to drain a heating or water system for maintenance.
- Drainage Asset Report — Detailed report cataloguing drainage assets on a site, with condition and location data.
- Drainage chamber base — Moulded preformed base unit forming the foundation of an inspection chamber.
- Drainage channel (ACO drain, linear drain) — Long surface drainage channel with grating used across driveways and patios.
- Drainage channel block — Linear precast channel laid in driveways and yards to intercept surface water.
- Drainage channel cleaning — Clearance of linear surface drainage channels and their connecting outlets.
- Drainage gradient (fall) — Slope of a drain pipe expressed as the vertical drop per horizontal metre length.
- Drainage gravel (10 to 40mm) — Graded clean stone aggregate used as bedding and surround for drainage pipes.
- Drainer (draining board) — Grooved surface alongside a kitchen sink allowing washed items to drip dry into the bowl.
- Drinking fountain (water bubbler) — Wall or pedestal fitting providing a stream of drinking water in public or commercial areas.
- Drum machine (electric) — Drum-style electric drain cleaning machine with continuous cable in a rotating drum.
- Dual-flush mechanism — Cistern fitting offering two flush volumes for liquid and solid waste to save water.
- Ductile iron pipe — Modern iron pipe alloyed for ductility, used in adopted sewer rising mains and water trunk mains.
- Dye injection kit — Coloured dye and applicator used to trace flow paths in drains.
- Dye test (drain tracing) — Tracing test using coloured dye to confirm which drain a fitting connects to.
