What technical specifications define professional bitumen emulsion spraying equipment for road and waterproofing works?

Key specs include calibrated application rate control, stable pressure regulation, correct nozzle type and spacing for uniform fan overlap, and a spray bar with adjustable height and sectional controls. The pump must be emulsion compatible and low pulsation, with flow capacity matching target rates and viscosity. Include filtration matched to nozzles, recirculation mode, and materials resistant to the emulsion chemistry. For waterproofing, fine control of low rates and consistent film build is important. Documentation features such as data logging for QA and calibration certificates add professional value.