Description Overview The d series hot melt tanks are serious mid size bulk industrial hot melt machines. Available with a range of tank sizes, melt rates, pump sizes and will operate with up to 8 hoses and guns. Specifications Melt rates vary with adhesive type. 200/240 vac, 50-60 hz, 3-phase delta nominal or 400 vac, 50-60 hz, 3 phase wye nominal. Four hose/head zones with four auxiliary zones, or six hose/head zones without auxiliary zones. D50/90 units have eight hose/head zones with eight auxiliary zones.