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20 liter accumulator

Watertight Sliding Doors


Water Pressure Tested

Electro Hydraulic operation (suitable for passenger vessels)

  • 1 or 2 cylinders
  • 140 mm sill or low sill (20 mm)

About this product

General information

The electro-hydraulic watertight sliding door ALBATROS is a new type of compact door. It is supplied as a completely finished and tested unit, ready for welding in. It combines the well known proven mechanical design of our doors, in standard sizes, with a standardized and simplified hydraulic and electrical system. Available in a wide range of sizes and with various options to assemble a custom made door.    The design and manufacture of ALBATROS doors are in full compliance with the IMO/SOLAS safety regulations for passenger ships and MOU (mobile offshore units) to fulfill the watertight integrity of the vessel and is type approved by all major classification societies.   Each door is included with a (hydraulic) power unit and watertight control box, and tested for water pressure. Our proven design is easy to adjust and maintain, and seals can be replaced within minutes. This results in a lower cost of ownership.

Min. Width
Min. Height
8 mm blades
Closing Points
3.40 metres
Aluminium, steel, stainless steel
Open Close Indication
Open, Close indication
Water Pressure
Tested up to 12 mwc

Product features

The ALBATROS is a compact door which means that the power pack, valve blocks, hand pump and control box are pre-mounted on the bulkhead plate and welded to the door frame. Rail extensions with support and bolts, bladder accumulator, wheelhouse panel and emergency station are supplied separately. Each door has an independent electric-hydraulic system with one power source consisting of a motor and pump, capable of closing or opening the door between 20-40 seconds. The back-up bladder accumulator contains enough pressurized hydraulic oil to operate the door in case of main power failure with three movements (close-open-close).

Local power operation by handle (optional push buttons) at either side of the bulkhead, closing and opening. “Door open” as well as “Door close” is active operated which means that the door will stop after the release of the handle (or push buttons). The motor is only running when the handle (or push buttons) is operated.

Local emergency operation by a hand pump operable from either side of the bulkhead, to allow closing and opening. To close the door, use the hand pump. To open the door, set the handle/valve in “open” direction and then use the hand pump.

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Emergency Accumulator operation

In case of main power supply failure to the electro motor, a bladder back-up accumulator

contains enough oil to operate the door three movements (close-open-close). In normal

operation, the pressure in the accumulator is constantly monitored and filled, ready for use.

Optional: Remote power operation

By master mode switch from the wheelhouse panel. The main control in the wheelhouse is

executed with a “master mode” switch with two modes of control. The ‘doors closed’ mode

automatically re-closes the doors after they have been opened locally (pre-warning of 5-10

seconds according to SOLAS is provided). The ‘local control’ mode allows the doors to be opened locally without automatic reclosure.

Optional: Emergency remote operation

Emergency operation by a hand pump, above freeboard deck, closing only.

Alarm/indication signals

Locally, two audible alarms (sounder) are combined with a visual alarm (flash light). At the remote emergency station, a visual indication (red/green lights) is present. The wheelhouse panel shows the location of the doors and is equipped with indication lights for open/close indication and alarm signaling, including buzzer when main, control power supply or accumulator pressure is lost.