www.reliablesprinkler.com
Models DD56-6, DD56-27, DD80-6, DD80-27, DS56, & GP56
Attic Sprinklers
Specific Application Sprinklers
cULus Listed
for Sloped Combustible and Noncombustible Light Hazard Concealed Spaces
Product Features
DD80 Series sprinklers provide coverage for spans up
to 70 ft (21 m) with one row of sprinklers
DD56 Series sprinklers provide coverage for spans up
to 40 ft (12 m) with one row of sprinklers.
Model DS56 sprinkler provides coverage up to
6 ft x 40 ft (1.8 m x 12 m)
Model GP56 sprinkler provides coverage up to
10 ft x 15 ft (3.0 m x 4.6 m)
All models use a 212°F (100°C) temperature rated
fusible-link operating element
Product Description
Reliable Attic Sprinklers are cULus Listed Specific Appli-
cation sprinklers. The sprinklers are available for protection
of combustible and non-combustible light hazard con-
cealed spaces with roof/ceiling slopes of 4:12 to 8:12. Re-
liable Attic Sprinklers are upright sprinklers listed for use
on wet-pipe or dry-pipe sprinkler systems. All Reliable
Attic sprinklers use a 212°F (100°C) temperature rated
fusible-link operating element that is Listed for installation
where the maximum ceiling temperature is up to 150°F
(66°C). Table A provides a summary of available Reliable
Attic sprinklers.
Attic Sprinklers
Model DD56
Model DD80
Model DS56
Model GP56
Attic Sprinkler Summary
Table A
Sprinkler
Model
Nominal
K-Factor
gpm/psi
1/2
(L/min/bar
1/2
)
Thread Size
NPT or
ISO7-1
Max. Coverage Area
(Measured on Floor)
ft x ft
(m x m)
Roof Slope
Design Criteria
Sprinkler
Identification
Number (SIN)
DD56-6
5.6
(80)
½
6 x 40
(1.8 x 12)
4:12 to <6:12
Table B
RA5624
DD56-27
5.6
(80)
½
6 x 40
(1.8 x 12)
6:12 to 8:12
Table C
RA5694
DD80-6
8.0
(115)
¾
6 x 66 or 5 x 70
(1.8 x 20 or 1.5 x 21)
4:12 to <6:12
Table D
RA5622
DD80-27
8.0
(115)
¾
6 x 66 or 5 x 70
(1.8 x 20 or 1.5 x 21)
6:12 to 8:12
Table E
RA5692
DS56
5.6
(80)
½
6 x 40
(1.8 x 12)
4:12 to 8:12
Table F
RA5625
GP56
5.6
(80)
½
10 x 15
(3.0 x 4.6)
4:12 to 8:12
Table G
RA5695
Bulletin 056 December 2016
