Purasan EX 2 Treatment System
Purasan EX 2 – Compliant Onboard Waste Treatment Without the Holding Tank Hassle
The Raritan Purasan
EX 2 offers boaters a smarter, greener way to handle waste—without
relying on holding tanks or marina pump-outs. USCG-certified as a Type I Marine
Sanitation Device (MSD), the Purasan
EX 2 allows legal, safe discharge of treated waste in approved U.S.
waters, helping you stay compliant while reducing your environmental impact.
Ideal for coastal cruisers, liveaboards, and weekend sailors, this compact
system treats each flush in real time—neutralizing bacteria and viruses with
every cycle. The result? No holding tank odors, no risk of overflow, and no more
worrying about pump-out facilities on your route.
The latest EX 2 model
features an upgraded tablet-based disinfectant system that delivers more precise
dosing and better consistency than previous liquid-based designs. It’s easier to
maintain, stores well in seasonal conditions, and is perfect for boaters
navigating both salt and freshwater environments.
Installation is designed with flexibility in mind. The Purasan
EX 2 works with most manual or electric marine toilets, and its small
footprint fits easily into tight compartments. Plumbing connections are
straightforward, and once installed, the system runs automatically—activating
the treatment cycle every time the toilet is flushed.
Unlike basic MSDs, this unit provides EPA-compliant treatment levels by
combining maceration, advanced disinfection, and a timed treatment sequence.
That means you get cleaner discharge and peace of mind, without compromising on
convenience or water conservation.
If you’re ready to move beyond traditional holding tanks, the Purasan
EX 2 is the eco-smart upgrade. It’s a trusted solution from Raritan, a
marine sanitation leader for over 60 years.
Ditch the tank. Treat waste at the source. Stay compliant wherever you cruise.
The Purasan EX 2 is
an innovative, USCG-certified
marine sanitation device designed to provide reliable and eco-friendly
waste treatment for boaters navigating both freshwater and saltwater. Originally
developed for the freshwater lakes of Kentucky, this advanced system has evolved
into a highly sought-after solution for its ability to treat waste at the
source, ensuring clean discharge into tidal waters while promoting environmental
stewardship.
Raritan recognizes
the diverse needs of boaters, and the Purasan
EX 2 offers a smart alternative to traditional holding tanks. While
holding tanks are suitable for some, they pose challenges such as limited
capacity and the risk of illegal dumping when pump-out facilities are
unavailable or non-operational. With the Purasan
EX 2, waste is treated immediately and discharged as compliant
effluent, helping boaters avoid the hassles of full tanks or non-functioning
pump-outs while maintaining responsible waste management practices.
Understanding Type
I Marine Sanitation Devices
The Purasan EX 2 is
a Type
I Marine Sanitation Device (MSD) designed for use within the three-mile
limit, where treatment is required before discharge. However, boaters must be
mindful of No
Discharge Zones (NDZs), where discharge of treated blackwater is
prohibited. Navigators should consider their cruising areas, the availability of
pump-out stations, and the time spent in NDZs
to determine the ideal sanitation solution for their vessel.
Advanced
Flow-Through Design
The Purasan EX 2 operates
as a flow-through system, seamlessly connecting the toilet, treatment tank, and
thru-hull fitting. During each flush, waste enters the treatment tank, where a
precise amount of disinfectant is introduced to neutralize pathogens.
Simultaneously, an equal volume of treated waste is discharged overboard. This
efficient process eliminates the need for long-term storage, ensuring a cleaner
and more convenient boating experience. New for the EX
2 is the elimination of the manifold that was a part of the old tablet
dispensing system making the dispensing system much more streamlined and
efficient.
Purasan EX: Engineered for Performance
The latest Purasan
EX 2 is packed with enhancements to deliver superior functionality:
-
Enhanced Disinfectant Tablets: Inspired by commercial wastewater
treatment technologies, these tablets create a powerful disinfectant that
neutralizes waste on contact. A built-in control system alerts users when
tablets need replacement, ensuring uninterrupted operation.
-
High-Speed Macerator: Integrated into the treatment tank, this
macerator efficiently breaks down waste, ensuring optimal contact with the
disinfectant for effective treatment.
-
Air Pump
Integration: A newly added air pump improves water flow into the
treatment tank, enabling flexible mounting options while preventing premature
tablet disintegration.
-
Versatile
Compatibility: While initially designed for freshwater systems, the Purasan
EX 2 now works seamlessly with most marine toilets, flushing with
either saltwater or freshwater.
WARNING:
This product can expose you to chemicals including Di-n-hexyl Phthalate (DnHP)
which is known to the State of California to cause reproductive harm, and
Vinyl Chloride which is known to the State of California to cause cancer. For
more information go to 
