Model LT56C Specific Application Sprinkler SIN RA5994
Technical Specifications
Style:
Flat Cover Plate Concealed Pendent
Threads:
1/2” NPT or ISO 7-1 R1/2
Nominal K-Factor:
5.6 (80 metric)
Max. Working Pressure:
175 psi (12 bar)
Min. Spacing:
14 ft. (4.3 m)
Material Specifications
Thermal Sensor:
Nickel Alloy Solder Link
Sprinkler Body:
Brass Alloy
Levers:
Bronze Alloy
Yoke:
Brass Alloy
Sealing Assembly:
Nickel Alloy with PTFE
Load Screw:
Bronze Alloy
Towers:
Copper Alloy
Pins:
Stainless Steel
Deflector:
Bronze Alloy
Cup:
Steel
Sprinkler Finishes
(See Table H)
Sensitivity
Quick-response
Temperature Ratings
165°F (74°C)
212°F (100°C)
Cover Plate
Model G4
Sprinkler Wrench
Model FC
Listings and Approvals
cULus Listed
Model LT56C Sprinkler Components and Dimensions
Figure 5
Model LT56C Sprinkler Hydraulic Design Criteria
Table F
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)
24
(91)
18.4
(1.27)
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 6 of 10
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