Lexan Eco Friendly Discharge Companion I – Oily Bilge Water Separators – For Series 4 Systems


Eco Friendly Discharge Companion – Oily water separator

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The Eco Friendly Discharge Companion I is a Coalesce type oily water separator designed to work in conjunction with Series 4 Arid Bilge Systems

Consider the benefits . . .

If you currently have an oil leak on the yacht, that oil will dispurse into the bilge water and is finally pumped over the side. You could be fined for water pollution, even though you might not be aware that there was a leak. Eventually, as that oil leak becomes more serious, you end up finding it, but only after making a mess of your yachting adventure.

With the Arid Bilge System and Eco Friendly Discharge Companion combination, everything changes. With this installation, the bilges are maintained 100% dry. If a layer of oil is captured in the central chamber of the Eco Friendly Discharge Companion, it can be manually drained. Now the volume and type of oil leaked can be observed. Finding an oil stain in a dry bilge makes it a breeze to locate and fix the source of that leak. In the long run, the yacht becomes more reliable, and smaller repairs are made sooner before more serious damage is done to the motors. Pollution fines are also avoided while protecting the surrounding marine habitat. This becomes a win-win situation with cleaner bilges, a cleaner environment and lower maintenance costs in the long run.

Additional information

Weight 16 lbs
Dimensions 18 × 20 × 12 in

15 inches / 38 cm with Stainless Steel hinged lid.
We recommend an additional 7 inches / 18 cm of vertical clearance for the raising of the lid.


15.75 inches / 40 cm to end of fittings


9.5 inches / 24 cm

Dry weight

12.8 lbs. / 5.8 kg

Main unit material

Lexan type plastic, 1/4 inch thick with external Awlgrip Matterhorn White finish except for viewing windows

Power requirements


Ports Intake

1/2 inch barbed

Water discharge

1/2 inch barbed

Oil discharge

1/2 inch barbed

Standards and certifications

none as a stand alone system

Why can't I just connect the Eco Friendly to my bilge pump?
The Series 4 & 9 Arid Bilge Systems are low flow units. They allow for “resident time” of liquids in the central chamber of the Eco Friendly, which allows the oil to rise to the top forming a surface layer. When connected to a standard bilge pump, the Eco Friendly would simply overflow sending the mess back into your bilge.
What standards or certifications does the Eco Friendly meet?
None. We know that it works because professional Captains have tested this unit for us on 100’+ foot Yachts and have reported no sheen on the surrounding waters. We do offer monitored systems if you are required to meet a certification.
What maintenance is required?
In normal use, the Eco Friendly should be maintenance free. If small amounts of oil are seen in the central window, then drain and store until enough oil is accumulated for recycling. Removal and thorough cleaning is recommended annually or after any large Diesel fuel spill.
How does the Eco Friendly work?
Discharge from the Arid Bilge System enters on the left side of the box into the first of three chambers. Chamber 1 allows the air to escape. Flow is restricted through a 3/8″ standpipe to chamber 2 which is the largest of the three chambers. An additional port between chambers 1 & 2 allows any accumulated surface layer of oil to travel to the second chamber during full discharges from the Series 9 Arid Bilge System. An oil drain located on the face of chamber 2 allows for the draining of oil manually. A second vertical standpipe allows the flow to continue to the third (check) chamber. The third chamber with its full length standpipe prevents siphoning and maintains the minimum liquid level of the entire separator. Water exits the Eco Friendly through a gravity feed.