TECHNO NEWS
for MITSUI－MAN B&W engines, No.114
APPROVED H. Sakamoto
Introduction of Safety screen filter for control
valve with FIVA / ELFI / ELVA CHECKED J. Nakamura
Rev1: 8th Sept. 2021 Attach a sample of Instruction book and of Code book PREPARED T. Saito
ENGINE TYPE ME engine DATE 2021/6/4
We are pleased to introduce the new “Safety screen filter”, which can be installed permanently to
protect the control valve of the FIVA/ELFI/ELVA against foreign particles in the hydraulic oil line
(between HPS (Hydraulic Power Supply) filter and control valve).
1. Function of Safety screen filter
FIVA/ELFI/ELVA valve is fixed on HCU (Hydraulic
Cylinder Unit) and is controlled by an electronically Exhaust valve
controlled control valve. The FIVA/ELFI/ELVA valve actuator
FO pump
controls fuel injection and exhaust valve activation by
supplying hydraulic oil to the FO pump and exhaust valve
actuator.
Therefore, fuel injection and exhaust valve activation will
not work properly in case of control valve malfunction due
Control valve
to foreign particles flowing in hydraulic oil, etc. FIVA valve
Normally the HPS filter (mesh size: 6 µm) catches
foreign particles. If Safety screen filter (mesh size: 100
μm) is installed between the FIVA/ELFI/ELVA valve and
control valve, the risk of the control valve sticking can be
reduced by catching foreign particles before the control
Fig.1 FIVA valve with
valve. There is no influence on the engine performance
Hydraulic Cylinder Unit
by the applying the filter.
Hydraulic oil line
(Rating: 300bar)
Filter element
Control valve FIVA valve
Control valve FIVA valve Block with filter (MES-M type)
FIVA valve (without Safety screen filter) FIVA valve (with Safety screen filter)
Fig.2 Image of Safety screen filter applying
PRIORITY
AT FIRST WHEN
IMMEDIATELY OPPORTUNITY CONVENIENT OTHERS
Mitsui E&S Machinery Co., Ltd.
Technical Group / Diesel Engine Service Department
Technoservice Division
1-1, Tama 3-chome, Tamano, Okayama 706-8651, Japan
TEL +81-863-23-2385 / FAX +81-863-23-2349
E-mail: tech_de@mes.co.jp
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2. Installation and supply of Safety screen filter
It is possible to retrofit Safety screen filter, regardless of specification of FIVA/ELFI/ELVA valve※1
without influence on the main engine performance.
The following parts will be supplied with the Safety screen filter for the existing FIVA/ELFI/ELVA valve
onboard. (Refer to Fig.3)
Block with filter （Block for filter・Filter element・Nut・Plug・O-ring）
Bolts
Flange
Cleaning tool for filter element
It is possible for ship’s crew to install Safety screen filter in accordance with the fitting manual included
with the filter.
※1
Pipes, grating or cable way around FIVA/ELFI/ELVA valve could possibly interfere with the retrofit
of the filter. Therefore, please contact us about the details for your vessel.
3. Maintenance of Safety screen filter
Inspection and cleaning of the filter is required every 6,000 running hours.
Please clean the Safety screen filter regularly. If the filter is clogged, fuel injection or exhaust valve
activation may be adversely affected.
The filter element can be cleaned by compressed air and the cleaning tool.
After overhauling parts related to the HPS or hydraulic oil line, the Safety screen filter may catch
foreign particles. In such case, please inspect and clean the filter before regular maintenance.
During regular maintenance, please check the appearance of filter element, and if any damage or
deformation is found, please replace the filter element with a new one.
Flange
Plug screw
Filter element
Nut
Block for filter
Bolt
O-ring
Fig.3 Component of Safety screen filter
4. Inquiry and purchase
Please contact your local sales representative. For contact details, please refer to Mitsui Service Note
No.111.
Attachment 1: A sample of Instruction book (S60ME-C)※2
Attachment 2: Code book (for FIVA valve)
※2
: Attachment is a sample. Because Torque, tools, position and weight of parts vary engine type,
please refer to original instruction book.
Torque except of screw for FIVA valve of attachment is same for all engine type.
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*Caution
D06-200, 230 & 231 are same for all engine.
D06-215 & 228 vary by engine type.
Please refer to original instruction book.
*Caution
Position of parts varies by engine type.
Please refer to original instruction book.
