TFP412

Page 4 of 6

Max. Coverage

ft x ft

(m x m)

Max.

Spacing

ft

(m)

WET PIPE SYSTEM

Ordinary Temp. Rating

155°F (68°C)

Intermediate Temp. Rating

175°F (79°C)

Deflector to

Ceiling

Installation

Type

Minimum

Spacing

ft

(m)

Flow

GPM

(L/min)

Pressure

PSI

(bar)

Flow

GPM

(L/min)

Pressure

PSI

(bar)

12 x 12

(3,7 x 3,7)

12

(3,7)

13

(49,2)

8.7

(0,60)

13

(49,2)

8.7

(0,60)

4 in. to

6 in.

Recessed

using Style 20

Escutcheon or

non-recessed

per NFPA 13D,

13R, or 13

8

(2,4)

14 x 14

(4,3 x 4,3)

14

(4,3)

14

(53,0)

10.1

(0,70)

14

(53,0)

10.1

(0,70)

16 x 16

(4,9 x 4,9)

16

(4,9)

16

(60,6)

13.2

(0,91)

16

(60,6)

13.2

(0,91)

16 x 18

(4,9 x 5,5)

16

(4,9)

19

(71,9)

18.6

(1,28)

19

(71,9)

18.6

(1,28)

16 x 20

(4,9 x 6,1)

16

(4,9)

23

(87,1)

27.3

(1,88)

23

(87,1)

27.3

(1,88)

18 x 18

(5,5 x 5,5)

18

(5,5)

23

(87,1)

27.3

(1,88)

23

(87,1)

27.3

(1,88)

18 x 20

(5,5 x 6,1)

18

(5,5)

26

(98,4)

34.9

(2,41)

26

(98,4)

34.9

(2,41)

12 x 12

(3,7 x 3,7)

12

(3,7)

13

(49,2)

8.7

(0,60)

13

(49,2)

8.7

(0,60)

6 in. to

12 in.

14 x 14

(4,3 x 4,3)

14

(4,3)

14

(53,0)

10.1

(0,70)

14

(53,0)

10.1

(0,70)

16 x 16

(4,9 x 4,9)

16

(4,9)

17

(64,3)

14.9

(1,03)

17

(64,3)

14.9

(1,03)

16 x 18

(4,9 x 5,5)

16

(4,9)

20

(75,7)

20.7

(1,43)

20

(75,7)

20.7

(1,43)

16 x 20

(4,9 x 6,1)

16

(4,9)

23

(87,1)

27.3

(1,88)

23

(87,1)

27.3

(1,88)

18 x 18

(5,5 x 5,5)

18

(5,5)

23

(87,1)

27.3

(1,88)

23

(87,1)

27.3

(1,88)

18 x 20

(5,5 x 6,1)

18

(5,5)

26

(98,4)

34.9

(2,41)

26

(98,4)

34.9

(2,41)

Notes:

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. Requirement is based on minimum flow in GPM (LPM) from each sprinkler. The associated residual pressures are calculated using the nominal K-factor. See Hydraulic

Design under the Design Criteria section.

d. The Width x Length dimension refers to the Width (backwall where the sprinkler is located) times the Length (horizontal throw of sprinkler).

TABLE A

WET PIPE SYSTEMS

SERIES LFII (TY2334) RESIDENTIAL HORIZONTAL SIDEWALL

AND RECESSED HORIZONTAL SIDEWALL SPRINKLERS

NFPA 13D, 13R AND 13 WET PIPE HYDRAULIC DESIGN CRITERIA