GW Sprinkler Loflow K15 Series User manual

GW LOFLOW K-15 TYPE C, O & S
GW SPRINKLER A/S
Kastanievej 15, DK 5620-Glamsbjerg, Denmark
TEL: [phone] FAX: [phone]
Email: [e-mail]
Data sheet also available at www.gwsprinkler.com
DATA SHEET No: GW SN030 1001 A
Data Sheet:
Page:
Issue / Date:
GW Loflow K-15 Type C, O
& S
1 of 3
9th July 2007
The right is reserved to vary or modify any specifications without prior notice
Maritime Installation of LOFLOW K15 Sprinklers:
Loflow K15 Sprinklers must be installed in the pendant position. Systems must be designed and installed in
accordance with SOLAS Regulation II-2/12, with the exception of water densities less than 5 litres/min/m2.
Sprinkler systems must be hydraulically calculated with the Hazen-Williams formula, to provide the
recommended minimum water pressure on the last nozzle to operate in the system. SOLAS and NFPA 750
require the systems to have standing charge of fresh water.
Installation and Maintenance:
Loflow K15 Sprinklers have a small orifice when compared with traditional sprinklers. To minimise the risk of
blocked sprinkler nozzles during operation, the sprinkler pipes must be flushed with fresh clean water through
each branch pipe end to avoid dirt in pipes before the sprinklers are installed.
Caution:
After the pipes have been flushed and the pipe plug removed, the internal pipe threads must be cleaned for any
sealing materials, before the sprinklers are installed.
The sprinklers must always be installed in the pendant position using the special purpose spanner from GW
Sprinkler A/S.
Table 1 Sprinkler Pipes and Components:
System Sprinkler material Pipe system material Extinguishing agent
Brass natural
Brass – chrome Galvanized steel pipes Cu-alloys pipes
Plastic (See note 1)
Fresh water
Galvanised steel pipes
Brass/Cu-alloy pipes
SS303, 304 pipes
Fresh water
Brass – ENP CuNi pipes
SS316, SMO254 etc.
Plastic pipes (see note
1)
Fresh & Seawater
Wet Pipe
Systems
Stainless steel
AISI316
CuNi pipes
SS316, SMO254 etc.
Plastic pipes (see note
1)
Fresh & Seawater
Brass natural
Brass chrome Cu-alloys pipes Fresh water
Brass – ENP Brass/Cu-alloy pipes
SS303, 304 pipes Fresh & Seawater
Dry Pipe
Systems Stainless steel
AISI316 CuNi pipes Stainless steel pipes Fresh & Seawater

GW LOFLOW K-15 TYPE C, O & S
GW SPRINKLER A/S
Kastanievej 15, DK 5620-Glamsbjerg, Denmark
TEL: [phone] FAX: [phone]
Email: [e-mail]
Data sheet also available at www.gwsprinkler.com
DATA SHEET No: GW SN030 1001 A
Data Sheet:
Page:
Issue / Date:
GW Loflow K-15 Type C, O
& S
2 of 3
9th July 2007
The right is reserved to vary or modify any specifications without prior notice
Pipe material Component materials Extinguishing Agent
Galv. steel Cast/Ductile iron Fresh Water
Galv.steel
Cu-alloys Brass Coated iron and steel,
Naval brass
Plastic (Not USCG Installations)
Fresh Water
CuNi
SS316 Coated iron and steel, Aluminium bronze, SS316,
Brass with ENP/Nedox coating
Fresh & Sea Water
Plastic Cast/ductile iron,
Brass and SS303 etc.
CuNi, SS316, SMO254
Fresh & Sea Water
1) Sprinkler pipes must correspond with hydraulic calculations, internal pressures and authority demands and
recommendations.
Sprinkler material must correspond with materials of pipes and extinguishant, see table 1 above.
2) The materials of sprinkler system components such as valves, flow switches, pumps etc. must correspond
with authority demands, water flow, system pressure, pipe materials and extinguishing agent.
See also Loflow Sprinkler Installation Guidelines Ref no.: 715 for Maritime Installations.
Galvanised Pipes and Fittings:
NFPA 750 does not allow the use of galvanised pipes and fittings downstream the system strainer.
USCG requires a strainer downstream of all fittings that are of materials other than these shown in NFPA
(1996), table 2-3.3.1.
Table 2 Components Material:
Note 1: Plastic pipes are not to be used in maritime installations or ordinary hazard Installations.

GW LOFLOW K-15 TYPE C, O & S
GW SPRINKLER A/S
Kastanievej 15, DK 5620-Glamsbjerg, Denmark
TEL: [phone] FAX: [phone]
Email: [e-mail]
Data sheet also available at www.gwsprinkler.com
DATA SHEET No: GW SN030 1001 A
Data Sheet:
Page:
Issue / Date:
GW Loflow K-15 Type C, O
& S
3 of 3
9th July 2007
The right is reserved to vary or modify any specifications without prior notice
Table 3: Applications as Classified in SOLAS Regulation II-2/26.2.2:
LOFLOW Sprinkler TypeOccupancy Classification Parameters K15-O K15-C K15-S
(1) Control Stations Sprinkler Spacing:
Distance to Wall:
Water Pressure:
Locations:
Ceiling Height:
max. 3.5m
max. 1.5m
min. 6 bar
all
max. 5m
max. 12m2
max. 2.0m
min. 6 bar
small rooms*
max. 2.5m
(2) Stairways Sprinkler Spacing:
Distance to Wall:
Water Pressure
Stairways Width:
Ceiling Height:
max. 3.5m
max. 1.5m
min. 6 bar
>1.6m
max. 5m
max. 3.5m
max. 0.8m
min. 6 bar
< 1.6m
max. 2.5m
(3) Corridors Sprinkler Spacing:
Distance to Wall:
Water Pressure:
Corridor Width:
Ceiling Height:
max. 3.5m
max. 1.5m
min. 6 bar
> 1.6m
max. 5m
max. 3.5m
max. 0.8m
min. 6 bar
< 1.6m
max. 2.5m
(6) Accommodations Spaces
minor fire risk Sprinkler Spacing: Distance to Wall:
Water Pressure :
Locations:
Ceiling Height:
max. 3.5m
max. 1.5m
min. 6 bar
all
max. 5m
max. 12m2
max. 2.0m
min. 6 bar
small rooms*
max. 2.5m
(7) Accommodation spaces
moderate fire risk Sprinkler Spacing: Distance to Wall:
Water Pressure:
Locations:
Ceiling Height:
max. 3.5m
max. 1.5m
min. 6 bar
all
max. 5m
max. 12m2
max. 2.0m
min. 6 bar
small rooms*
max. 2.5m
max. 3.0m
max. 1.5m
min. 6 bar
all
max. 2.5m
(8) Accommodation spaces
greater fire risk Sprinkler Spacing: Distance to Wall:
Water Pressure
Locations:
Ceiling Height:
max. 3.5m
max. 1.5m
min. 6 bar
all
max. 5m
max. 12m2
max. 2.0m
min. 6 bar
small rooms*
max. 2.5m
max. 3.0m
max. 1.5m
min. 6 bar
all
max. 2.5m
(9) Sanitary & Similar Spaces Sprinkler Spacing:
Distance to Wall:
Water Pressure
Locations:
Ceiling Height:
max. 3.5m
max. 1.5m
min. 6 bar
all
max. 5m
max. 12m2
max. 2.0m
min. 6 bar
small rooms*
max. 2.5m
(13) Storerooms
Workshop, Pantries, Retail
shops, Stores and Laundries,
Galleys and rooms where
goods are piled or shelved
Sprinkler Spacing:
Distance to Wall:
Water Pressure
Locations:
Ceiling Height:
max. 3.0m
max. 1.5m
min. 6 bar
all
max. 2.5m
(14) Storage areas, shops and
other spaces where also
flammable liquids for retail
sales are stored in small
containers
Sprinkler Spacing:
Distance to Wall:
Water Pressure
Locations:
Ceiling Height:
max. 3.0m
max. 1.5m
min. 6 bar
all
max. 2.5m
*Sprinklers to be installed symmetrically
max. 4m x 3m rooms, min. 6 bar pressure Type: O = Open Space
C = Cabins & Corridors
S = Storage Rooms