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Noise-Monitoring Station
Portable meter measuring ambient noise near worksites. Provides documentation to prove compliance with local environmental limits.
Noise-Reduction Fan Cowl
Acoustically lined cowl around the fan outlet reducing overall sound levels. A key modification for sweepers operating in residential streets.
Noise-Reduction Kit
After-market kit comprising acoustic foam seals and mufflers. Reduces external sound levels for night-sweeping approval.
Nominal Stone Size
Grading designation (e.g., 6mm, 10mm) for surface dressing chippings.
Non-Contact Speed Sensor
Hall-effect sensor reading wheel or shaft speed. Supplies input to controllers for rate-of-spread calculations.
Non-Destructive Lift-Off
Removing temporary paint without damaging substrate.
Non-Return Fuel Valve
Valve preventing fuel back-flow when servicing the supply line. Maintains prime in auxiliary engines for reliable restarting.
Non-Return Valve (NRV)
Prevents backflow in binder, water, or bead lines.
Night‑Work Visibility Kit
Enhanced lighting and reflective markings for safe night operations.
Non-Slip Cab Mat
Textured rubber mat preventing slips when entering or exiting the cab. Easy to remove for cleaning and water drainage.
