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MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM
OPERATION, DESIGN, & SERVICE MANUAL
REV C
Document # DOC324
Issued: April 26, 2018
Revised: March 22, 2022
UL FILE # EX27541
Section 2 System Components and Description
2.6.2 JSH Discharge Nozzles
(See Figure 2.6.2)
e JSH-360 and JSH-180 Discharge Nozzles are Total Flooding nozzles with varying orifice sizes as
determined by the Janus Design Suite® Flow Calculation Software. JSH-360 nozzles are designed for
360° (8 port) radial or center room placement. JSH-180 are designed for 180° (6 port) sidewall placement.
Both are available in Brass or Stainless Steel. e nozzles are designed for Total Flooding Application of
Dry Chemical Agent into an enclosure with no more than 2.25% total unclosable openings. Each nozzle
is stamped with the nozzle part number and orifice diameter. Blow-Off Cap MUST be ordered separately
(see section 2.6.3). NOTE: JSH-360 and JSH-180 Discharge Nozzles have not been evaluated for use in
Vehicle Paint Spray Booth or Open Front Spray Booth applications.
360° Center Room Nozzle (8 Port)
180° Sidewall Nozzle (6 Port)Top ViewSide Cut View
Table 2.6.2 - JSH Discharge Nozzle Sizes
Nozzle Part Number
Nominal
Pipe
Size
Nozzle Dimensions
Brass Stainless Steel A B C
360° 180° 360° 180° in mm in mm in mm
19529 19522 20445 20438 3/8 in (10mm) 1.436 36.5 1.125 28.57 1.30 33.02
19530 19523 20446 20439 1/2 in (15 mm) 1.722 43.7 1.250 37.75 1.44 36.58
19531 19524 20447 20440 3/4 in (20 mm) 1.926 48.9 1.500 38.10 1.73 43.94
19532 19525 20448 20441 1 in (25 mm) 2.176 55.3 1.750 44.45 2.02 51.31
19533 19526 20449 20442 1 1/4 in (32 mm) 2.500 63.5 2.250 57.15 2.60 66.04
19534 19527 20450 20443 1 1/2 in (40 mm) 2.689 68.3 2.250 57.15 2.60 66.04
19535 19528 20451 20444 2 in (50 mm) 3.100 78.7 3.000 76.20 3.46 87.88
Ordering Instructions: Specify the Nozzle P/N followed by a dash and the three digits representative of the drill
code as provided by the Janus Design Suite software.
Example:19529-XXX=Nozzle:360°,3/8”(10mm),Brass(withdrillcodeasspecied)
Figure2.6.2JSH-360andJSH-180DischargeNozzleCongurations
B
C
A
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