Reliable Automatic Sprinkler Co., Inc.,
103 Fairview Park Drive, Elmsford, New York 10523
Model DH56 Dry (SIN RA1664)
K5.6 (80 metric)
Extended Coverage
Horizontal Sidewall Sprinkler
Bulle
tin 016 December 2021
Bulletin 016 December 2021
For coverages up to 28 feet wide
and 10 feet long
(1)
. 250 psi (17,2 bar)
rated.
Features:
1. Coverage for long and narrow spaces such as hallways,
corridors, decks and rooms up to 28 feet wide and 10
feet long (see figure 1).
2. Deflector to ceiling dimensions are:
4” (102mm) min. to 12” (305mm) max.
3.
Minimum spacing between sprinklers 16 feet (4.9m).
(1)
4.
White polyester, black plyester, and ENT finish sprinklers
are cULus Listed as Corrosion Resistant (not applicable
to concealed sprinklers).
5. 5.6 K Factor.
6. Sprinkler is approved for
250 psi (17,2 bar) applications.
8. Quick response performance.
9.
½” (13mm) adjustment of escutcheon and cover.
10. Concealed cover plate can prevent the sprinkler from
being used for unintended purposes. No exposed
thermal element with the concealed version.
11. Push-on/thread-off sturdy convenient escutcheon for
recessed and cover for concealed.
12. Factory assembled sprinkler & cup, shipped complete
with bulb protector for concealed and FP recessed
versions.
13. Sprinkler & cup assembly and escutcheon or cover are
separately packaged.
14.
Available in a variety of plated and painted finishes
Approval Organizations
• Listed by Underwriters Laboratories Inc. and
UL certified for Canada (cULus)
Patents
US Patent No. 7,841,418
Products Description
The Model DH56 are quick response extended coverage
sidewall dry sprinklers for use in light hazard applications.
The Model DH56 dry sprinkler with SWC cover plate is a
concealed sprinkler that uses Reliable’s push on/thread off
sidewall cover. This sprinkler has the cup factory mounted
and is shipped with a bulb protector that protects the 3mm
frangible glass bulb during shipping and post installation
finishing operations. The DH56 can be combined in
the field with the FP Escutcheon to make a recessed
dry sprinkler. The SWC cover plate and FP recessed
DH56 HSW Concealed
with SWC cover plate
DH56 HSW
DH56 HSW FP Recessed
DH56 HSW/HB
escutcheons have ½” adjustment. The SWC cover plate
is attached with 135 & 165 degree solder. In the event of
a fire the rising ambient temperature melts the solder and
the cover plate is ejected away by springs exposing the
3mm frangible glass bulb. The use of a 3mm bulb allows
quick response which enables the sprinkler to apply water
to a fire sooner than standard response sprinklers of the
same temperature rating.
