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Solenoid valve controlling each spray-bar section individually. Enables accurate binder control at varying carriageway widths.

Port to bleed air and control suction.

Operating sweeper ahead of spray convoy.

Cone angle of nozzle spray pattern.

Precision weight used to balance the centrifugal fan after blade replacement. Minimises vibration and bearing wear.

Spray fan angle set per nozzle spec.

Automatic hydraulic system keeping suction head parallel to the road. Maintains constant gap and airflow regardless of camber.

Sheet of paper or card placed behind nozzles during calibration. Reveals blocked or mis-aligned jets before binder spraying begins.

Clear inspection port built into the suction ducting. Allows operators to view and remove blockages quickly without dismantling long hose runs.

Valve isolating the spray bar from the main binder circuit. Enables safe maintenance or section testing while the tank remains full.