Deck integrated Fire Fighting System
with Non Pop-up Nozzle
A DIFF system (Deck Integrated Fire Fighting) is an effective fire suppression system that is normally the primary firefighting system on a helideck.
The non-popup nozzle design is easily to install on new an existing decks. The skid will be placed in areas close to the deck.
The MARSOL DiFFS was developed based on experience of many years in O&G business arround the world.
Pipe Diameter 40 mm (1 ½“)
Material SS316L (standard); Titanium (optional)
Working Pressure 3.5 bar (50.8 psi) ~ 7 bar (101.5 psi)
Design Pressure 20 bar (290 psi)
End Connection 1 ½“ BSP (Threaded); Flange connection (optional)
Flow Tolerance ]±5%
Coverage Diameter 8 meters (26 feet)
Coverage Height 8 meters (26 feet)
Weight 0.75 Kg (1.65 lbs)
'O'-Ring NBR
Outer Body Coating Deep Chrome Green (BS381C:267) – only for UL Nozzles
Standard CAP-437, UL 162, UL 2351
Approval ABS, UL, CAAi , HCA
DIFFS Nozzle
The K3GS series of spray nozzles are designed to be used as part of a Deck Integrated Fire Fighting System (DIFFS).
An array of these nozzles installed on a helipad/helideck provides for an effective spray pattern and distribution covering the whole of the deck surface - throughout a range of weather conditions.
These spray nozzles have been specifically designed to be of simple construction – having orifices for both horizontal and vertical flow patterns. The nozzles do not ‘pop up’ – instead, the foam/water discharges from a fixed, ultra-low profile position. The precise number and layout of nozzles are dependent on the specifics of helipad / helideck type, “D” value of the deck, flow rate of the nozzle and its coverage.
As required by the regulatory standards, there will be sufficient overlap of the horizontal flow pattern components when all the nozzles are discharging during system operation. Because the nozzle is not of the ‘pop up’ type, the danger of a mechanical malfunction is not possible. Even if there is a blocked flow – e.g. due to a heavy object on top of the nozzle – the foam/water will still spray out from the horizontal orifices of the nozzle.