The emmie mobile cleaning system for hydraulic oil comprises a trolley mounted centrifugal separator and a mobile electrical oil heater. Wheeled between hydraulic systems, emmie removes water and 99% of all particles in the size range 2 μm–5 μm. 

The result is a dramatic increase in the reliability of the hydraulic systems, the life-time of the hydraulic oil is extended, filter cartridge consumption is reduced and there is less contaminated oil to dispose of.


• Bow, stern and azimuth thrusters
• CP propellers
• Deck cranes
• Winches
• Hoistable decks
• Hatch covers
• Ramps
• Steering gear
• Stabilizers
• Hydraulic lifts
• Deep well pumping systems for product tankers/
chemical tankers
• Stern tube lube oil
• Steam turbine lube oil
• Thermal oil.

emmie system concept

• emmie separator, mounted on a stainless steel trolley.
• Trolley equipped with built-on screw-pump, collecting tank, control functions.
• Mobile, electrical preheater.
• Set of standard hydraulic hoses with quick-release couplings, including non-return valves.


• Installation-free start-up, emmie can be connected to ahydraulic oil tank in minutes. Then simply plug in and switch on.
• Separator, pump and heater operate on single phase 230 V AC, and can therefore be plugged into any wall socket.
• Two bowl options delivered with the emmie separator offer clarifier or purifier mode.
• The entire system can be wheeled from tank to tank.

• Combined suction and return pipe with air/dust filter.
• Compact design allows access to confined spaces. Sledge runner handles on the trolley slide easily down ladders.


• Drastic increase in the reliability and availability of hydraulic systems.
• The life-time of the hydraulic oil is extended.
• Reduced filter cartridge consumption.
• Less contaminated oil and fewer filter cartridges to dispose of. 

Purifier or clarifier 

The emmie is supplied with two bowl sets, enabling the user to operate emmie in either purifier or clarifier mode. Switching between the two modes is done in minutes.Purifier mode is used when the oil is heavily contaminated with water since it offers continuous water removal. The separated water drains into the collecting tank under the separator. The solids accumulate on the bowl wall and are removed periodically by hand. If the hydraulic oil contains only traces of water, or none at all, the clarifier mode is recommended.


Operating the system

The system can be connected to a hydraulic oil tank in minutes. Replace filler cap on the hydraulic oil tank with the emmie cap with combined suction and return pipe. Connect one end of hose to dive pipe and the other to suction side of the pump.
Connect pressure side of pump to heater, heater to separator, and separator to the hydraulic oil tank. Hook up control cable from separator control box to heater. Connect separator and heater to standard 230 V AC wall socket.
Start separator, start pump – wait for oil to flow through. Start heater. After about one to three days’ operation, the separator bowl should be cleaned.

System components
emmie separator
• Direct drive, eliminating gears or belts.
• Frequency converter with built-in voltage protector.


• Built-on screw pump.
• Collecting tank for oil spill and separated water, including overflow switch.
• Starters for the separator and pump.
• Pressure gauge.
• Low pressure switch/water seal alarm on the outgoing oil.
• Handles with sledge runner design.

Mobile electrical oil pre-heater

• Fitted with wheels and handle.
• Heats the hydraulic oil to max. 65°C.
• Hold-up volume of 1 litre ensures good response.
• PID controller ensures oil at a constant temperature to the separator.

Standard hydraulic hoses with quickrelease couplings, including non-return valves and dive pipe (with breather filter) with suction and return for connection to hydraulic oil tank.




 Alfa Laval is a leading global provider of products and solutions based on heat transfer, separation

and fluid handling. The company helps customers to optimize the performance of their processes

- and to heat, cool, separate and transport products in a wide range of industries.

Alfa Laval's worldwide organization works closely with customers in 100 countries.


info@rahyaab.com        009821-88934322 009821-88974973
009821-76263707 009821-76263304