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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
2.5.3 Discharge Manifold
(supplied by installer)
A discharge manifold may be used in a multiple cylinder system to direct the flow of agent from two or more
cylinders into a common pipe. Manifolds are to be supplied by the installer and may be constructed out of
threaded or welded pipe and fittings. When two or more cylinders are grouped together with a common
manifold, they must be of the same size and fill. A manifolded cylinder arrangement must be fitted with a
manifold check valve. Suggested manifold dimensions and arrangements are shown in Figure 2.5.3a, 2.5.3b,
and 2.5.3c. Actual manifold size and dimensions must comply with hydraulic flow calculations derived from
the Janus Design Suite® software.
Figure 2.5.3a Typical Cylinder Spacing for 200 lb Cylinders
20.5”
(521 mm)
20.5”
(521 mm)
20.5”
(521 mm)
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