Reliable DH80 Bulletin

For coverages up to 28 feet wide and 14
feet long . 250 psi (17,2 bar) rated.
(1)
Features:
1. Coverage for long and narrow spaces such as hall-
ways, corridors, decks and rooms up to 28 feet
wide and 14 feet long.
2. Deflector to ceiling dimensions are:
4" (102mm) min. to 12" (305mm) max.
3. Minimum spacing between sprinklers 12 feet
(3,6m).
4. UL Listed for light hazard applications.
5. 8.0 K Factor.
6. Sprinkler is approved for 250 psi (17,2 bar) appli-
cations.
7. Quick response performance.
8. ½" (13mm) adjustment of escutcheon and cover.
9. Tamper resistant cover plate can prevent the sprin-
kler from being used for unintended purposes. No
exposed thermal element with the concealed ver-
sion.
10. Push-on/thread-off sturdy convenient escutcheon
for recessed and cover for concealed.
11. Factory assembled sprinkler & cup, shipped com-
plete with protective cap for concealed and FP
recessed versions.
12. Sprinkler & cup assembly and escutcheon or cov-
er are separately packaged.
13. Cover finishes available in standard white paint,
special bronze, black paint or flat white paint.
14. Polyester Coated or Electroless Nickel PTFE
Plated cULus Listed Corrosion Resistant
Sprinklers
*Concealed Sprinkler is not corrosion resistant
See Figure 4.
(1)
Approval Organizations
1. Listed by Underwriters Laboratories Inc. and
UL certified for Canada (cULus)
2. NYC MEA 258-93-E
Patents: US patent number 6,374,919
SWC Cover Plate
US Patent Number 6, 920, 937, B2
DH80 Sprinkler
The Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
(1)
Model DH80
Model DH80 Recessed
Model DH80 Concealed
Quick Response,
Extended Coverage Sprinkler
DH80
DH80 Concealed
with SWC cover plate
Products Description
The Model DH80 family of sprinklers are quick response ex-
tended coverage sidewall sprinklers for use in light hazard appli-
cations. The Model DH80 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 protective cap that protects the 3mm frangible glass bulb dur-
ing shipping and post installation finishing operations. The DH80
can be combined in the field with the FP or F2 Escutcheon to
make a recessed sprinkler. The SWC cover plate, FP and F2
recessed escutcheons have ½" adjustment. The SWC cover
plate is attached with 135-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 stan-
dard response sprinkles of the same temperature rating.
Application
The Model DH80 is a horizontal sidewall sprinkler intended for
installation in light hazard occupancies in accordance with NFPA
13. These sprinklers are designed to provide fire protection in
long and narrow spaces such as hallways, corridors, decks and
rooms up to 28 feet (8,5m) wide and 14 feet (4,3m) long. They
are rated for 250 psi (17,2 bar) and can be mounted between 4
and 12 inches (102 and 305mm) down from the ceiling.
Bulletin 003 December 2021
DH80 Recessed
DH80 F2 Recessed