The Dieselcraft/JCH Enviro Series offers 3 models of portable filtration carts. These carts are specifically designed to give the buyer the tool to deal with small problems such as condensation contamination before they become disasters. Models are available to maintain fuel storage from 500 gallons to 2500 gallons. They are stand-alone heavy-duty closed loop fuel filtration systems. Systems range form 6 to 15 GPM filtration capacity and come duel voltage 115-230 volt.