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Reliable Automatic Sprinkler Co., Inc.,

 103 Fairview Park Drive, Elmsford, New York 10523

Model DH56 HSW
Model DH56 HSW Recessed
Model DH56 HSW Concealed
Quick Response,
Extended Coverage Dry Sprinklers

Bulletin 016 

Rev
.

 H

Bulletin 016 

Rev. 

H

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.

(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.  Polyester Coated or  Electroless Nickel PTFE (Teflon

®

)* 

Plated  Corrosion Resistant  Sprinklers.
*Concealed Sprinkler is not corrosion resistance.

5.  UL Listed for extended coverage, light hazard applications.  
6.  5.6  K  Factor.
7.  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

(1)

 See Fig. 9.

Approval Organizations

1.  Listed by Underwriters Laboratories Inc. and 

UL certified for Canada (cULus)

2.  NYC MEA 258-93-E

Patents

US Patent No. 7,841,418
Other Patents Pending

Products Description

The Model DH56 are quick response extended cover-

age  sidewall dry sprinklers for use in light hazard applica-
tions.  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 fin-
ishing operations. The DH56 can be combined in the field 
with the FP Escutcheon to make a recessed dry sprinkler.  

DH56 HSW Concealed

with SWC coverplate (See Fig. 7)

DH56 HSW (See Fig. 4)

DH56 HSW FP Recessed (See Fig. 6)

DH56 HSW/HB (See Fig. 5)

The SWC cover plate and FP recessed 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.

Model DH56 dry sprinklers are intended for use in dry 

and preaction systems to protect areas subjected to freez-
ing temperatures and unheated portions inside and outside 
buildings. See Fig. 1 for guidelines on using dry sprinklers in 
wet systems.

*DuPont Registered Trademark

Содержание DH56 HSW

Страница 1: ...See Fig 9 Approval Organizations 1 Listed by Underwriters Laboratories Inc and UL certified for Canada cULus 2 NYC MEA 258 93 E Patents US Patent No 7 841 418 Other Patents Pending Products Descriptio...

Страница 2: ...the Model XLO2 wrench1 see Fig 2 to tighten the sprinkler until it is secured in the sprin kler fitting Note The Model XLO2 wrench has a notch in it to accommodate the deflector top This wrench can o...

Страница 3: ...Fig 1 3...

Страница 4: ...me bronze Special finish specify Quick response extended coverage horizontal sidewall dry sprinklers shall be Reliable Model DH56 SIN RA1664 Bulletin 016 For recessed EC horizontal sidewall sprinklers...

Страница 5: ...nominal position Escutcheon adjustment provides 6mm to 1 32mm A dimension adjustment range Fig 4 Note The Sprinkler Can protrudes 1 when escutcheon is in nominal position Escutcheon adjustment pro vi...

Страница 6: ...6 Fig 7 Note Do not install the Model DH56 Dry EC Horizontal Recessed Sidewall Sprinkler in walls which have positive pressure in their side space Fig 6...

Страница 7: ...7 Fig 8...

Страница 8: ...f the sprinklers Escutcheon Data FP cup escutcheon assembly 13mm adjustment Finishes 1 Standard Finishes 1 Sprinkler Escutcheon Cover Plate White or Black Polyester 2 Chrome Bronze Brass 3 White Chrom...

Страница 9: ...400 6 GLASS BULB GLASS W GLYCERIN SOLUTION 7 ORIFICE ADAPTOR BRASS ALLOY PER UNS C36000 8 OUTER TUBE GALVANIZED STEEL 9 INNER TUBE BRASS ALLOY PER UNS C23000 10 YOKE BRASS ALLOY PER UNS C38000 11 INLE...

Страница 10: ...oughout the United States Canada and foreign countries Automatic sprinklers Flush automatic sprinklers Recessed automatic sprinklers Concealed automatic sprinklers Adjustable automatic sprinklers Dry...

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