The ARO Station can accommodate three different size pumps – the 1”, 1-1/2” or 2” Expert Series (EXP) ARO diaphragm pump. With the capability to pump material from five to 30 cubic meters per hour (132 gpm), the ARO Station can be calibrated to pump the appropriate quantity for each application. Use of the ARO Station increases the safety of chemical installations during the unloading process by reducing risks of water hammer that occur during the pressurization of the tank