Premium Quality - Italian Made! As an alternative to the electric pump and hand pump options, the Gravity Kit offers another method of dispensing DEF. Equipped with a manual DEF nozzle and 2” NPT connector, the Gravity Kit is an economic means of utilizing your IBC tote to dispense from an elevated position. Includes: Manual nozzle 9 ft. of hose 2" NPT connector IBC Bottom adapter The DEF systems used on North American heavy duty diesel trucks are adapted from systems that were already in use in Europe. Thus Piusi has already had many years of experience building these systems in Italy for use throughout the European continent. Piusi has been in business since 1953, with their USA branch opening in 2009.