TECHNICAL DATA
September 17, 2009
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: [email protected]
MODEL VKFD25U
PRE-ASSEMBLED FLEXIBLE
SPRINKLER DROP
ASSEMBLIES
(UNBRAIDED)
3. TECHNICAL DATA
Specifi cations:
Available since 2010.
Hose tube diameter: 25 mm outside diameter
Standard Length: 39-3/8”
Inlet 1” NPT, male pipe threads.
Outlet reducer straight with 1/2” NPT, female thread. See Figures 1-3.
Corrugated tube is annealed after forming to insure relief of all material stresses and removal of all scale.
Maximum Working Pressure = 200 PSI (13.8 bar)
Test Pressure = 300 PSI (21 bar)
Approved for wet and dry systems as noted in NFPA 13
Maximum ambient temperature: 225 °F (107 °C) EPDM seal
WARNING: Refer to the sprinkler technical data page, as the temperature rating and maximum pressure rating of the
sprinkler may be different than the Flexible Sprinkler Drop.
Minimum bend radius: 4” (102 mm) for cULus Listing
Material Standards:
Flexible Tube: UNS-S30400 Stainless Steel
Outlet Reducer (Straight): SPPS Steel (ASTM A53 EA) with yellow zinc plating
Inlet Nipple: SPPS Steel (ASTM A53 EA) with yellow zinc plating
Seal: EPDM
Slip Nut: SS41 (ASTM A283 D) Steel with zinc plating
Support Brackets (all): SS41 (ASTM A283 D) Steel with zinc plating
Support Bar: SS41 (ASTM A283 D) Steel with zinc plating
Insulating Collar: Nylon 66
Ordering Information:
(Also refer to the current Viking price list.)
Flexible Sprinkler Drop Assembly Kits Pre-Assembled with Viking Sprinklers: Outlet reducer support bracket (bracket, square nut,
and wing bolt) assembled over straight outlet fitting, sprinklers (see Table 1) installed and leak tested into the outlet fitting as speci-
fied, (10) per kit.
Instructions:
1. For frame style sprinkler VK302, add the sprinkler Finish and Temperature Rating Suffix to the Sprinkler Base Part No.
A. For Chrome sprinkler rated 135°F (57°C): Add the suffix “FA”. For White sprinkler rated 135°F (57°C): Add the suffix “MA/W”
B. For Chrome sprinkler rated 155°F (68°C): Add the suffix “FB”. For White sprinkler rated 155°F (68°C): Add the suffix “MB/W”
C. For Chrome sprinkler rated 175°F (79°C): Add the suffix “FD”. For White sprinkler rated 175°F (79°C): Add the suffix “MD/W”
D. For Chrome sprinkler rated 200°F (93°C): Add the suffix “FE”. For White sprinkler rated 200°F (93°C): Add the suffix “ME/W”
E. For Chrome sprinkler rated 286°F (141°C): Add the suffix “FG”. For White sprinkler rated 286°F (141°C): Add the suffix “MG/W”
2. Add the Flex Hose Suffix: “/16038-10”
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Sprinkler 138h
Viking Technical Data may be found on
The Viking Corporation’s Web site at
http://www.vikinggroupinc.com.
The Web site may include a more recent
edition of this Technical Data Page.
TABLE 1
SPRINKLERS AVAILABLE TO ORDER AS PRE-ASSEMBLED MODEL VKFD25U UNBRAIDED FLEXDROP KITS
SIN
Sprinkler
Description
Sprinkler
Base
Part No.
1
Add Finish and Temperature Suffix
Add
Unbraided
Flex Hose
Suffix
Add Escutcheon Suffix
(If Applicable)
Chr
Wht
Chr
Wht
Chr
Wht
Chr
Wht
Chr
Wht
39-3/8”
length
Model E-1 Model E-2 Model F-1
135°F (57°C) 155°F (68°C) 175°F (79°C) 200°F (93°C)
286°F
(141°C)
Chr Wht Chr Wht Chr Wht
VK302
Microfast
®
QR
Pendent K5.6
06662B
FA
MA/W
FB
MB/W FD
MD/W
FE
ME/W
FG
MG/W
16038-10
1F
1W
2F
2W
3F
3W
VK462
Mirage
®
Concealed
Pendent K5.6
13503A
135°F (57°C) 155°F (68°C) 175°F (79°C) 200°F (93°C) 286°F (141°C)
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B
D
E
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16038-10
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