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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 3 Fill Components
3.2 Cylinder Fill Assembly
P/N 99517 (See Figure 3.2)
e cylinder fill assembly is formed from a series of interconnected fittings and valves to serve as a connection
point between the agent fill station and the cylinder assembly.
e manual agent fill valve is a 1/4 in (8 mm)
manually actuated ball valve used to open and
close the cylinder fill assembly, allowing agent
to flow from the fill station into the cylinder
assembly.
e cylinder fill assembly has four connection
points. When connected to the cylinder valve
and fill station as recommended, two connection
points are oriented vertically and two connection
points are oriented horizontally as depicted in
Figure 3.2. e vertical connection points are
referred to as the gauge connection port and
the nitrogen pressurization port. e horizontal
connection points are referred to as the pump
connection port and cylinder connection port.
3.2.1 Pump Connection Port
e pump connection port is a 1/4 in (8 mm) male quick-connect fitting attached directly to the manual
agent fill valve and serves as the connection point for the agent fill station. e male quick-connect fitting
of the pump connection port contains an internal check valve that prevents agent from flowing through the
fitting unless it is connected to the fill station.
3.2.2 Cylinder Connection Port
e cylinder connection port is located opposite of the pump connection port and is a 1/4 in (8 mm) female
quick-connect fitting that serves as the connection point for the 1/4 in (8 mm) male quick-connect fitting
on the fill adapter (refer to section 3.1). e female quick-connect fitting of the cylinder connection port
contains an internal check valve that prevents agent from flowing through the fitting unless it is connected
to the fill adapter.
3.2.3 Gauge Connection Port
e gauge connection port is a 1/4 in (8 mm) male quick-connect fitting that serves as the connection point
for the fill pressure gauge. It is located on the same side of the cylinder fill assembly as the handle for the
manual agent fill valve. When connected to the cylinder valve, the cylinder fill assembly must be oriented
so that the gauge connection port is perpendicular to the ground and pointing upwards. e male quick-
connect fitting of the gauge connection port contains an internal check valve that prevents agent from
flowing through the fitting unless the fill pressure gauge has been installed to it.
1/4" (8 mm)
Male Quick-Connect
Nitrogen Pressurization Port
1/4" (8 mm)
Male Quick-Connect
Pump Connection Port
1/4" (8 mm)
Female Quick-Connect
Cylinder Connection Port
1/4" (8 mm)
Male Quick-Connect
Gauge Connection Port
1/4" (8 mm)
Manually Actuated Ball Valve
Manual Agent Fill Valve
Figure 3.2 Cylinder Fill Assembly
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