D
Drop-On Aggregate
Drop-on aggregate is the controlled application of aggregate onto a binder or thermoplastic surface while it is still hot or tacky. It is used to improve texture and increase skid resistance once embedded and cured. Aggregate is applied immediately after the binder or marking material is laid so it can embed before the surface sets.…
Dust-Suppression Spray Nozzle
Atomising nozzle producing fine mist for dust control. Designed for minimal water consumption while maintaining visibility.
Downline Heater
Heater in lines from tank to bar to prevent cooldown.
Drop‑On Beads
Glass beads applied onto fresh markings to provide night visibility.
Drain Cock (Low Point)
Low-point drain to empty lines/tanks fully.
Dry Bead Adhesion
Adhesion of beads applied to cured paint/epoxy.
Drain Hose Coupling
Quick-release coupling fitted to drain emulsion or water tanks safely. Standard BSP fittings are used on UK sprayers for interchangeability.
Dry Film Thickness (DFT)
Dry film thickness (DFT) is the thickness of a coating once solvents have evaporated and the film has fully cured. It is a key quality measure for coatings and road marking materials. DFT is checked using calibrated gauges to confirm that applied material meets specification. Under-application can reduce durability, while excessive build can cause cracking,…
Drain Valve Lock
Lock securing drains closed during transit.
Dry Time (Paint)
Time to touch-dry for traffic opening.
