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REFILL MANUAL FOR 3M™ NOVEC™ 1230 FIRE PROTECTION FLUID
Revision E
Document # DOC181
Issued: May 31, 2011
Revised: June 23, 2020
Section 2 Cylinder Assembly
2 CYLINDER ASSEMBLY
e cylinder assembly consists of the cylinder, dip tube, and cylinder valve.
2.1 Cylinder
e Novec 1230 fluid is stored as a liquid inside a welded steel cylinder. e cylinders are superpressurized
with dry nitrogen to a pressure of 360 psig (24.8 bar) at 70°F (21°C). Every cylinder has a minimum fill
density of 35 lb/ft
3
(561 kg/m
3
) and a maximum fill density of 70 lb/ft
3
(1121 kg/m
3
). e capacity of a
cylinder varies according to the design requirements and the Series designation (See Table 2.1.1 for a list of
available capacities).
Standard domestic cylinders
are manufactured according
to the requirements of
the U.S. Department of
Transportation (USDOT)
and Transport Canada
1
(TC)
for compressed gas and are
fitted with an identification
label indicating the fill
quantity of Novec 1230
fluid. Each cylinder has
internal neck threads to
allow for connection to the
cylinder valve.
2.1.1 Rupture Disc
A frangible rupture disc is fitted to the Lv Series cylinder body. It functions as an emergency relief device in
the event of excessive internal pressure within the cylinder. Its rupture point is between 850 psi (58.6 bar)
and 1000 psi (68.9 bar).
is feature is not found on the Sv Series or Mv Series cylinder. Instead, a rupture disc is located on the side
of Sv Series and Mv Series cylinder valve as detailed in sections 2.3.1 and 2.3.2.
2.1.2 Liquid Level Indicator
e liquid level indicator consists of a sealed non-magnetic tube containing an external measurement tape
fitted with a magnet. A second magnet with an opposing polarity is installed on the outside of the tube
and is exposed to the liquid Novec 1230 fluid. As the tape is extracted from the tube, it will engage with
the second magnet creating a noticeable change in tension. e measure on the tape when this change in
tension occurs indicates the current liquid level inside the cylinder and can then be compared to a chart
located in Appendix B of this manual to determine the current fill weight of the cylinder.
e liquid level indicator assembly is threaded into an outlet on the head (top) of the Mv Series and Lv
Series cylinders.
is feature is not found on the Sv Series cylinder.
Table 2.1 Cylinder Capacities
Valve
Series
Nominal
Cylinder
Size
P/N
Fill Capacity
Empty
Weight
Minimum Maximum
lb kg lb kg lb kg
Sv 40 lb 20503 22 10.0 49 19.5 36 16.3
Sv 80 lb 20504 41 18.6 81 36.7 65 29.5
Sv 130 lb 20505 66 29.9 131 59.4 77 35.0
Mv 250 lb 20506 126 57.2 252 114.3 213 96.6
Mv 420 lb 20507 211 95.7 422 191.4 279 126.6
Lv 600 lb 20508 304 137.9 609 275.3 346 157.0
Lv 900 lb 20509 455 206.4 910 412.7 471 213.6
Lv 1000 lb 20510 561 254.5 1000 453.6 766 346.5
Ordering Instructions: Specify the Cylinder Assembly P/N followed by a dash
and the ll weight in pounds expressed in three digits.
1 1000 lb Cylinders are not Transport Canada approved.
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