All RK2 fractionators are built with heavy-duty, non-corrosive materials for saltwater and ozone compatibility. Systems include dedicated venturi pumps, ozone-resistant Kynar® injectors and wash-down sprayers with electronic interval timers. Level control valves and unions or flanges at all ports. Additional recirculation pump may be added to skid. All pump motors available with any electrical configuration. AC models have clear bodies. PE models have high density polyethylene (HDPE) bodies. All have clear, acrylic reaction chambers. Ozone systems (with air dryers and oxygen generators) are sold separately and mounted on the unit for minimal footprint and easy installation. Ships motor freight, FOB factory. Crating charge is included in price. One-year limited warranty. Made in USA.