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Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
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• All obstruction criteria for extended coverage sprinklers per NFPA 13 shall apply unless
specified differently in this data sheet.
• For installations where the VK950 is installed up to a 15'-0" X 15'-0" spacing or less between
sprinkler, the obstruction rules for standard coverage sprinklers shall apply.
• For installations where the VK950 exceeds 15'-0" X 15'-0" spacing, and up to 16'-0" X 16'-0"
spacing, the obstruction rules for extended coverage sprinklers shall apply
• See illustrations below.
Standard Coverage Applications
(Use dimension Y or Z, whichever is greater.)
NFPA 13 Obstruction Criteria - Standard Coverage
ApplicationTable 10.2.7.1.2
Distance from Sprinkler to Side
of Obstruction (X)
< 1'-0"
<300 mm
1'-0" to <1'-6"
300 mm to <450 mm
1'-6" to <2'-0"
450 mm to <600 mm
2'-0" to <2'-6"
600 mm to <750 mm
2'-6" to <3'-0"
750 mm to <900 mm
3'-0" to <3'-6"
900 mm to <1.1 m
3'-6" to <4'-0"
1.1 m to <1.2 m
4'-0" to <4'-6"
1.2 m to <1.4 m
4'-6" to <5'-0"
1.4 m to <1.5 m
Form No. F_081216
21.03.06 Rev 20.3
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
OBSTRUCTION CRITERI A - CPVC and STEEL PIPE
APPLIES TO BOTH CPVC AND STEEL PIPE (Also refer to the Approval Chart)
OBSTRUCTIONS
ELEVATION VIEW
Upper Deck
X
Y
Z
Lower Deck
X ≥ 3Y or 3Z
X ≤ 36" (900 mm)
Figure 14: NFPA 13 Obstruction Criteria
Maximum
Allowable Distance
of Deflector
Above Bottom of
Obstruction (Y)
0"
0 mm
21/2"
65 mm
31/2"
90 mm
51/2"
140 mm
71/2"
190 mm
91/2"
240 mm
12"
300 mm
14"
350 mm
161/2"
45 mm
PLAN VIEW
Y
Z
X
ELEVATION VIEW
Upper Deck
or bottom of
non-combustible
insulation
Y
X
Extended Coverage Applications
X ≤ 36" (900 mm)
(Use dimension Y or Z, whichever is greater.)
NFPA 13 Obstruction Criteria - Extended Coverage
ApplicationTable 11.2.5.1.2
Distance from Sprinkler to Side
of Obstruction (X)
< 1'-0"
1'-0" to <1'-6"
300 mm to <450 mm
1'-6" to <2'-0"
450 mm to <600 mm
2'-0" to <2'-6"
600 mm to <750 mm
2'-6" to <3'-0"
750 mm to <900 mm
3'-0" to <3'-6"
3'-6" to <4'-0"
4'-0" to <4'-6"
4'-6" to <5'-0"
COIN
QUICK
®
RESPONSE UPRIGHT
SPRINKLER VK950
(SPECIFIC APPLICATION)
X ≥ 4Y or 4Z
Maximum
Allowable Distance
of Deflector
Above Bottom of
Obstruction (Y)
<300 mm
0"
0"
1"
1"
1"
900 mm to <1.1 m
3"
1.1 m to <1.2 m
3"
1.2 m to <1.4 m
5"
1.4 m to <1.5 m
7"
Replaces Form No. F_081216 20.2
(Added new Figure 6 and 12.)
14 of 14
0 mm
0 mm
25 mm
25 mm
75 mm
75 mm
75 mm
125 mm
175 mm
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