Slide Fuel-Valves Pass Noteworthy Milestone
First introduced at the turn of the millennium, MAN PrimeServ – MAN
Diesel & Turbo’s service division – recently retrofitted its 20,000th slide
fuel-valve.
Copenhagen,
07/06/2013
MAN Diesel & Turbo SE
Teglholmsgade 41
DK-2450 Copenhagen SV
Christian Ludwig – Head of Retrofit & Upgrade – MAN Diesel & Turbo, said: “Slide
fuel-valves have proved to be very popular within the marine, two-stroke market.
Really, it’s a case of having introduced the right technology at the right time and the
slide fuel-valve’s strong market performance is testimony to the fuel savings and
increased environmental profile it brings to working vessels. It is important to note that
slide fuel-valves improve the low-load operating capability of engines.”
DENMARK
www.mandieselturbo.com
Marketing & Documentation
Further information:
Peter Dan Petersen
Tel.: +45 33 85 14 70
peterd.petersen@man.eu
Graphics and images:
Slide Fuel-Valves
Mia Glarborg
Slide fuel-valves come as standard on all new MAN B&W engines but can also be
mia.glarborg@man.eu
retrofitted on MC engines. The slide fuel-valve eliminates the so-called ‘sac volume’,
which reduces fuel-oil consumption and, furthermore, eliminates dripping from the
fuel-valve nozzle.
Compared to conventional valves, the slide fuel-valve has NOx-reduction potential.
The reduced sac volume leads, by nature, to an improved combustion process,
resulting in fewer deposits throughout the gas ways and a reduction in overall
emissions, such as HC, NOx and particulate matter. Furthermore, visible smoke
conditions are also greatly reduced as a result of the improved combustion.
Conversely, engines fitted with slide fuel-valves have, due to improved low-load
performance with regard to soot formation, a significant advantage in an era where
‘slow steaming’ (sailing at part load) has become the industry norm. This
reduces/eliminates the need to run at high revolutions in order to clean exhaust
channels.
Retrofitting and benefits
The procedure for replacing standard valves with slide fuel-valves is straightforward
and can be carried out by ship personnel after instruction or MAN PrimeServ as
required. Fitting the new valve type brings many benefits to the table, including:

Improved low-load performance

Better combustion process
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Tel.: +45 33 85 15 90
Press Release
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
Reduced fouling of gas ways and exhaust-gas boiler

Reduced fouling of piston top land

No drips – no sac volume

Less visible smoke formation

Lower HC, NOx and particulate matter emission levels
Hydrocarbon consumption versus load for conventional and slide fuel-valves
MAN PrimeServ’s slide fuel-valve
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Press Release
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About MAN Diesel & Turbo
MAN Diesel & Turbo SE, based in Augsburg, Germany, is the world’s leading provider of large-bore diesel engines and
turbomachinery for marine and stationary applications. It designs two-stroke and four-stroke engines that are manufactured
both by the company and by its licensees. The engines have power outputs ranging from 450 kW to 87 MW. MAN Diesel &
Turbo also designs and manufactures gas turbines of up to 50 MW, steam turbines of up to 150 MW and compressors with
volume flows of up to 1.5 million m³/h and pressures of up to 1,000 bar. The product range is rounded off by turbochargers,
propellers, gas engines and chemical reactors. MAN Diesel & Turbo’s range of goods includes complete marine propulsion
systems, turbomachinery units for the oil & gas as well as the process industries and turnkey power plants. Customers
receive worldwide after-sales services marketed under the MAN PrimeServ brand. The company employs around 15,000
staff at more than 100 international sites, primarily in Germany, Denmark, France, Switzerland, the Czech Republic, India
and China. MAN Diesel & Turbo is a company in the Power Engineering business area of MAN SE.
Ref. No.: 6510-0318
All data provided in this press release is for information purposes only, explicitly non-binding and subject to changes
without further notice.
6/2013