Model LT56-300 Specific Application Sprinkler SIN RA5914
Technical Specifications
Style:
Pendent, Recessed Pendent, or
Conical Concealed
Threads:
1/2” NPT or ISO 7-1 R1/2
Nominal K-Factor:
5.6 (80 metric)
Max. Working Pressure:
300 psi (21 bar)
Min. Spacing:
14 ft. (4.3 m)
Material Specifications
Thermal Sensor:
3 mm glass-bulb
Sprinkler Frame:
Brass Alloy
Button:
Copper Alloy
Sealing Assembly:
Nickel Alloy with PTFE
Load Screw:
Bronze Alloy
Deflector:
Bronze Alloy
Sprinkler Finishes
(See Table H)
Sensitivity
Quick-response
Temperature Ratings
155°F (68°C)
200°F (93°C)
Recessed Escutcheons/Cover Plates
Model FV recessed escutcheon
Model FP recessed escutcheon
Model CCP cover plate
Sprinkler Wrenches
Model D (pendent)
Model GFR2 (recessed and concealed)
Listings and Approvals
cULus Listed
Model LT56-300 Sprinkler Components and Dimensions
Figure 3
Model LT56-300 Sprinkler Hydraulic Design Criteria
Table D
Minimum Flow and Residual Pressure
Max. Coverage Area
ft. x ft.
(m x m)
Flow
gpm
(l/min)
Pressure
psi
(bar)
28 x 8
(8.5 x 2.4)
23
(87)
16.9
(1.17)
28 x 10
(8.5 x 3.0)
28
(106)
25.0
(1.72)
Note:
For coverage area dimensions less than or between those listed above, use the minimum required flow for the next highest coverage
area for which hydraulic design criteria are stated.
Bulletin 058 Rev. B
November 2016
Page 4 of 10
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