RWO Oily Water
Separator Parts
SKIT/S-DEB · SKIT/S-DEB-SPS suction type · OWS-COM oil content monitors · CBM+ continuous bilge monitor
What an RWO oily water separator line is actually asking for
SKIT/S-DEB and OWS-COM are two generations of RWO's two-stage oily water separator, a coalescer followed by an emulsion-breaking polishing stage; CBM+ is a separate compliance monitor in the overboard line. Only one confirmation — which of them is actually fitted — decides which line is being opened.
SKIT/S-DEB · SKIT/S-DEB-SPS
RWO launched the SKIT/S-DEB at SMM 2004 for the MEPC.107(49) bilge water rules: an open-porous coalescer kept clean by periodic backflushing, followed by a second-stage emulsion-breaking oil and hydrocarbon polisher. It no longer appears in RWO's current range, while units remain in service. The polisher and coalescer inserts, gaskets, level probes and the automatic discharge valve are the recurring lines, and the slash in the designation belongs in the request as written.
OWS-COM
RWO's current oily water separator, launched at SMM 2014: a suction-type unit with an open-porous coalescer and automatic backflushing as the first stage and activated-carbon filter cartridges as the emulsion-breaking second stage. Its oil content measuring unit reads before and after the second stage and bypasses it whenever the first stage already meets the set limit, so the coalescer, the second-stage cartridges and the measuring cell are the recurring lines, and the type size on the plate fixes which of them fit.
CBM+
CBM+ is RWO's Clean Bilge Monitoring system: a stand-alone compliance monitor in the outlet pipe ahead of the overboard valve, whose 3-way valve returns the liquid to the bilge tank when the oil content is above the set limit. It takes the ship's GPS input and records date, time, position, flow and oil content for every discharge in a locked, tamper-proof housing. It does not replace a separator and needs no connection to one, so confirm which separator it sits behind. The oil content sensor, the 3-way valve, sample-line fittings, seals and the touch-screen unit are the recurring lines.
What is actually fitted decides the line, not the family name
An RWO enquiry usually needs one confirmation before it can be quoted at all: what is actually bolted to the separator.
The SKIT/S-DEB is RWO's two-stage separator of 2004, an open-porous coalescer followed by an emulsion-breaking polisher, and it no longer appears in RWO's current range while units remain in service. Because there is no current catalogue page to check the family against, parts are read from what is fitted: the polisher and coalescer inserts, gaskets, level probes and the automatic discharge valve are the recurring lines, and the slash in the designation — SKIT/S-DEB, or SKIT/S-DEB-SPS — belongs in the request exactly as it is marked.
OWS-COM is RWO's current separator rather than an instrument added to an older one, and its own oil content measuring unit reads before and after the second stage. A requisition that calls OWS-COM a monitor usually means its measuring cell; one that names it for coalescer elements or second-stage cartridges means the separator, and the type size on the plate decides which of them fit.
CBM+ is RWO's Clean Bilge Monitoring system, a stand-alone compliance monitor fitted directly before the overboard discharge valve. It takes the ship's GPS input and records the date, time, position, flow and oil content of every discharge, and it can sit behind any separator or on a clean-drain line, so an enquiry naming it has to confirm which separator, if any, it is fitted behind before the oil content sensor, 3-way valve, sample-line fittings, seals or touch-screen unit are quoted.
What an RWO line resolves to
Grouped as the two separator generations and the CBM+ divide, because a SKIT/S-DEB line, an OWS-COM line and a CBM+ line ask for different things.
- Second-stage polisher inserts for the SKIT/S-DEB
- Coalescer inserts for the SKIT/S-DEB
- Gaskets for the SKIT/S-DEB
- Level probes for the SKIT/S-DEB
- The automatic discharge valve on the SKIT/S-DEB
- OWS-COM coalescer elements
- OWS-COM second-stage activated-carbon filter cartridges
- OWS-COM oil content measuring cells
- RWO spare part kits for the separator: Emergency, Regular, Intermediate or Docking Kit
- CBM+ oil content sensors
- CBM+ 3-way valves
- CBM+ sample-line fittings and seals
- CBM+ touch-screen units
Say which separator is fitted, and whether a CBM+ sits behind it, before the rest of the line is quoted. Broader engine-room routing sits on engine room equipment.
The fields an RWO requisition tends to be missing
Written as an audit of the lines that come back for a second question rather than as a general checklist.
- The full designation including the slash, exactly as marked: SKIT/S-DEB or SKIT/S-DEB-SPS, or OWS-COM with the type size from its plate
- Whether the request is for the separator's coalescer or second-stage inserts, for its oil content measuring cell, for a CBM+, or several of these
- Which separator is actually fitted, SKIT/S-DEB or OWS-COM, and whether a CBM+ sits in the overboard line behind it
- The type-approval certificate reference for the separator, as held on board
- The type marking on the oil content meter itself; RWO's own calibrated-cell exchange service is offered for OMD 24/2005 measuring cells
- The RWO kit name if the ship orders by kit: Emergency, Regular, Intermediate or Docking Kit
- Photographs of the separator's own plate and, separately, the plate of the oil content meter or the CBM+
- Vessel and IMO number, the port and the ETA
An out-of-production separator and a certified monitor split the route
What is being renewed on an RWO line decides the route as much as the designation does.
Gaskets, level probes, seals and lamp or light source items are ordinary consumable questions once the designation and the monitor generation are confirmed, and a verified alternative can be reviewed against those facts. The absorber and coalescer inserts and the automatic discharge valve on the out-of-production SKIT/S-DEB are read against what is actually fitted, since there is no current catalogue to check them against.
Measuring cells and the parts tied to a monitor's certificate reference go to an OEM-route review, because the certificate ties a specific monitor build to the approval the plant was fitted under, and a proposed alternative has to be checked against that build rather than against the monitor name alone. Vessel Core marks the proposed route against each line rather than against the RWO name as a whole.
RWO separators — questions buyers ask
The SKIT/S-DEB is out of production. Can you still get parts for it?
Yes. The type is out of production while units remain in service, so parts are quoted against what is fitted rather than against a current catalogue. The absorber and coalescer inserts, gaskets, level probes and the automatic discharge valve are the recurring lines; copy the slash in the designation into the request exactly as it reads.
How does the SKIT/S-DEB actually work?
It is a two-stage separator: an open-porous coalescer, kept clean by periodic backflushing, followed by a second-stage emulsion-breaking oil and hydrocarbon polisher. That combination is why both a polisher insert and a coalescer insert appear on the same line rather than one or the other.
Do I need to order the monitor separately from the separator?
Only where a separate monitor exists. OWS-COM is itself the separator, with an oil content measuring unit built in, so its measuring cell is ordered as a line of the separator; a CBM+ is a stand-alone monitor in the overboard line and is always its own line. The certificate reference held on board identifies which separator build the plant was approved with.
Our documents mention both OWS-COM and CBM+. Which one is actually fitted?
Possibly both, because they do different jobs. OWS-COM is RWO's current separator; CBM+ is its Clean Bilge Monitoring system, a stand-alone monitor directly before the overboard valve that takes the ship's GPS input, records every discharge and does not replace a separator. The oil content sensor, 3-way valve, sample-line fittings, seals and touch-screen unit are the recurring lines on CBM+.
Can an alternative element be reviewed instead of the OEM part?
Only against the approval. An oily water separator is type-approved as an assembled arrangement, so the SKIT/S-DEB internals and the OWS-COM or CBM+ monitor cell are reviewed against the certificate reference that identifies which build the plant was approved with, rather than against the family name alone.
Is Vessel Core connected to RWO?
No, and there is no agreement of any kind. Vessel Core holds no dealership, distribution, representation or partnership agreement with RWO, and quoting a component against the SKIT/S-DEB, OWS-COM or CBM+ names implies no approval by the maker and no claim of interchangeability.
Submit your RFQ now.
Send your RWO oily water separator request — unit type (SKIT/S-DEB or OWS-COM, and CBM+ where one is fitted), the type approval certificate reference held aboard, and a photograph of the unit's own plate. State whether a CBM+ sits in the overboard line, since it is a separate unit from the separator.
