Specifications include, but are not limited to: The trailer must be rated for highway class use. Unit must be capable of operating in temperatures down to 5 degrees Fahrenheit. Materials furnished shall be new and at least of standard quality currently used commercially, conforming to current engineering and manufacturing practices. Materials shall be free from defects that adversely affect the function or appearance of the finished units. tank The tank design and construction shall meet all applicable federal cargo tank regulations, including rollover protection to meet HM-198A/HM-183 DOT hot asphalt requirements. Tank will be ASME certified construction to a 250-gallon minimum capacity with a minimum of a 3” drain valve at bottom of the tank and includes a thermostatic control switch. Insulation The tank will be insulated with a minimum of R15 fiberglass insulation that is waterproof and fire retardant. Flushing tank Unit will be provided with a minimum 13-gallon pressurized container for flushing emulsion lines and nozzle. Equipped with a pressure relief valve.