The Series DS-2 Dry Type Sprinkler is
to be installed in the 1 inch NPT outlet
or run of malleable or ductile iron
threaded tee fittings that meet the di-
mensional requirements of ANSI
B16.3 or cast iron threaded tee fittings
that meet the dimensional require-
ments of ANSI B16.4 with the end
sprinkler fitting on a branch line to be
plugged as shown in Figure 3, 4, or 5.
When
installing 1 inch NPT Series
DS-2 Dry Type Sprinklers on a dry pipe
sprinkler system, only use the side out-
let of maximum 2-1/2 inch size reduc-
ing tee’s.
For wet pipe sprinkler systems, the
Series DS-2 Dry Type Sprinklers may
also be installed in the 1 inch NPT
TFP530
Page 3 of 6
FIGURE 2
TY5255 STANDARD RESPONSE or TY5235 QUICK RESPONSE
SERIES DS-2 DRY PENDENT w/ FLUSH ESCUTCHEON
9/16"
(14,3 mm)
NOMINAL
MAKE-IN:
1" NPT
(REFER TO DESIGN
SPRINKLER FITTING
FACE OF
FITTING
SPRINKLER
CRITERIA SECTION)
FACE OF
CEILING
2-1/4±1/8"
(57,2±3,2 mm)
(69,9 mm)
2-3/4" DIA.
(92,1 mm)
3-5/8" DIA.
ADJUSTMENT
WILL PERMIT
ESCUTCHEON
±1/4" (6,4 mm)
ORDER LENGTHS:
INCREMENTS
IN 1/4" (6,4 mm)
(50,8 to 1219,2 mm)
2" to 48"
*
*
1" NPT
MAKE-IN:
NOMINAL
(14,3 mm)
9/16"
FITTING
CEILING
FACE OF
CRITERIA SECTION)
SPRINKLER
FACE OF
SPRINKLER FITTING
(REFER TO DESIGN
(41,3±3,2 mm)
1-5/8±1/8"
2-3/4" DIA.
(69,9 mm)
3-5/8" DIA.
(92,1 mm)
ADJUSTMENT
WILL PERMIT
ESCUTCHEON
±3/8" (9,5 mm)
ORDER LENGTHS:
INCREMENTS
IN 1/4" (6,4 mm)
(69,9 to 1219,2 mm)
2-3/4" to 48"
*
*
FIGURE 3
TY5255 STANDARD RESPONSE or TY5235 QUICK RESPONSE
SERIES DS-2 DRY PENDENT w/ RECESSED ESCUTCHEON
TABLE B
DISCHARGE COEFFICIENTS
K-FACTOR
LENGTH,
Inches (mm)
2-1/2 to 6-1/4
(63 mm to 159 mm)
6-1/2 to 10-1/2
(165 mm to 266,7 mm)
15 to 18-3/4
(381 mm to 476 mm)
10-3/4 to 14-3/4
(273 mm to 375 mm)
31-1/2 to 35-1/4
(800 mm to 895 mm)
27-1/4 to 31-1/4
(692 mm to 794 mm)
23-1/4 to 26-3/4
(591 mm to 679 mm)
19 to 23
(483 mm to 584 mm)
35-1/2 to 39-1/2
(902 mm to 1003 mm)
39-3/4 to 43-1/2
(1010 mm to 1105 mm)
43-3/4 to 48
(1111 mm to 1219 mm)
K-FACTOR,
GPM/psi
1/2
(LPM/bar
1/2
)
11.2
(161,3)
11.1
(159,8)
11.0
(158,4)
10.9
(157,0)
10.8
(155,5)
10.7
(154,1)
10.6
(152,6)
10.5
(151,2)
10.4
(149,8)
10.3
(148,3)
10.2
(146,9)
Note:
K-Factor Length is determined
as follows:
Flush:
“Order Length” (Fig. 2) plus
1/2 inch (12,7 mm).
Recessed:
“Order Length” (Fig. 3) plus
1/4 inch (6,3 mm).
Extended:
“Order Length” (Fig. 4) plus
3-1/4 inch (82,6 mm).
OBSOLETE
