Reliable DD56-6 Bulletin

Models DD56-6, DD56-27, DD80-6, DD80-27, DS56, & GP56
Specific Application Sprinklers
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 Sprinkler Summary
Nominal
Sprinkler K-Factor
1/2
Model gpm/psi
1/2
(L/min/bar
5.6
DD56-6
(80)
5.6
DD56-27
(80)
8.0
DD80-6
(115)
8.0
DD80-27
(115)
5.6
DS56
(80)
5.6
GP56
(80)
Max. Coverage Area
Thread Size
(Measured on Floor)
NPT or
ISO7-1
)
½
½
6 x 66 or 5 x 70
¾
(1.8 x 20 or 1.5 x 21)
6 x 66 or 5 x 70
¾
(1.8 x 20 or 1.5 x 21)
½
½
www.reliablesprinkler.com
Model DD56
Model DS56
Roof Slope
ft x ft
(m x m)
6 x 40
4:12 to <6:12
(1.8 x 12)
6 x 40
6:12 to 8:12
(1.8 x 12)
4:12 to <6:12
6:12 to 8:12
6 x 40
4:12 to 8:12
(1.8 x 12)
10 x 15
4:12 to 8:12
(3.0 x 4.6)
Bulletin 056 December 2016
Attic Sprinklers
cULus Listed
Attic Sprinklers
Model DD80
Model GP56
Table A
Sprinkler
Design Criteria Identification
Number (SIN)
Table B RA5624
Table C RA5694
Table D RA5622
Table E RA5692
Table F RA5625
Table G RA5695