TFP485
Page 8 of 14
Maximum
Coverage Area
(a)
ft x ft
(m x m)
Maximum
Spacing
ft
(m)
DRY PIPE
Minimum Flow
(b)
and
Residual Pressure for Horizontal Ceiling
(Maximum 2 in. Rise for 12 in. Run)
155°F
(68°C)
12 x 12
(3,7 x 3,7)
12
(3,7)
13 GPM (49,2 LPM)
7.0 psi (0,48 bar)
14 x 14
(4,3 x 4,3)
14
(4,3)
14 GPM (53,0 LPM)
8.2 psi (0,57 bar)
16 x 16
(4,9 x 4,9)
16
(4,9)
15 GPM (56,8 LPM)
9.4 psi (0,65 bar)
18 x 18
(5,5 x 5,5)
18
(5,5)
20 GPM (75,7 LPM)
16.7 psi (1,15 bar)
20 x 20
(6,1 x 6,1)
20
(6,1)
22 GPM (83,3 LPM)
20.2 psi (1,39 bar)
Notes:
a. For coverage area dimensions less than or between those indicated, it is necessary to use the minimum required
flow for the next highest coverage area for which hydraulic design criteria are stated.
b. The Minimum Flow requirement is based on minimum flow in GPM (LPM) from each sprinkler. The associated
residual pressures are calculated using the nominal K-factor. Refer to Hydraulic Design under the Design Criteria
section of TFP450.
* For detailed information about the Series LFII Residential Domed Plate Concealed Sprinklers, refer to Technical
Data Sheet TFP450.
Maximum
Coverage Area
(a)
ft x ft
(m x m)
Maximum
Spacing
ft
(m)
DRY PIPE
Minimum Flow
(b)
and
Residual Pressure for Horizontal Ceiling
(Maximum 2 in. Rise for 12 in. Run)
155°F
(68°C)
175°F
(79°C)
12 x 12
(3,7 x 3,7)
12
(3,7)
13 GPM (49,2 LPM)
7.0 psi (0,48 bar)
13 GPM (49,2 LPM)
7.0 psi (0,48 bar)
14 x 14
(4,3 x 4,3)
14
(4,3)
14 GPM (53,0 LPM)
8.2 psi (0,57 bar)
14 GPM (53,0 LPM)
8.2 psi (0,57 bar)
16 x 16
(4,9 x 4,9)
16
(4,9)
15 GPM (56,8 LPM)
9.4 psi (0,65 bar)
15 GPM (56,8 LPM)
9.4 psi (0,65 bar)
18 x 18
(5,5 x 5,5)
18
(5,5)
18 GPM (68,1 LPM)
13.5 psi (0,93 bar)
18 GPM (68,1 LPM)
13.5 psi (0,93 bar)
20 x 20
(6,1 x 6,1)
20
(6,1)
21 GPM (79,5 LPM)
18.4 psi (1,27 bar)
21 GPM (79,5 LPM)
18.4 psi (1,27 bar)
Note:
a. For coverage area dimensions less than or between those indicated, use the minimum required flow for the next
highest coverage area for which hydraulic design criteria are stated.
b. The Minimum Flow requirement is based on minimum flow in GPM (LPM) from each sprinkler. The associated
residual pressures are calculated using the nominal K-factor. Refer to Hydraulic Design under the Design Criteria
section of TFP400.
* For detailed information about the Series LFII Residential Pendent Sprinklers, refer to Technical Data Sheet
TFP400.
TABLE A
RAPID RESPONSE SERIES LFII (TY2234)
4.9K RESIDENTIAL PENDENT AND RECESSED PENDENT SPRINKLERS
DRY PIPE SYSTEM NFPA 13D HYDRAULIC DESIGN CRITERIA
TABLE B
RAPID RESPONSE SERIES LFII (TY2234)
4.9K RESIDENTIAL DOMED PLATE CONCEALED SPRINKLERS
DRY PIPE NFPA 13D HYDRAULIC DESIGN CRITERIA
