Mauldin’s 600-gallon MT-600 hot-tack sprayer brings big-sprayer features with a hydraulically-driven pump. Constant spray rate allows operators to vary application thickness simply with ground speed. The reversible pump allows the system to suck hot tack back into the tank from the 8-foot bar, or clean the bar by drawing solvent into the tank, rather than creating a spill problem. The diesel heater is thermostatically controlled.