Installation
06-237619-001 4-13 April 2020
4-6.2 Manifold Safety Device
Wherever there are closed sections of pipe, install a manifold safety device. This device pre-
vents any unlikely overpressure within the pipe.
Note: The manifold safety device may be vented to atmosphere or connected to the down-
stream pipe work (after any selector valves if applicable) to prevent accidental exposure
to the Agent in quantities that may exceed exposure limits within the cylinder storage
room.
• Locate the venting for the manifold safety device in an area where the Agent can be safely
discharged without exposing personnel.
• Ensure that the maximum allowable working pressure of the closed section of pipe is equal
to or greater than the maximum operating pressure of the manifold safety device, which is
1450 psi (100 bar) for part number 38-400006-002.
• The device must be installed upstream of any selector or lockout valve (if applicable).
Figure 4-11 shows an example of an installed manifold safety device. In this example, the
manifold safety device’s 3/4” NPT fitting is connected to a reducer. The reducer is connected
to a Tee pipe which is also connected to the manifold via a BSP to NPT adapter. The other side
of the Tee pipe connects to the extended manifold, selector valve, lockout valve or other
system piping.
Note: When installing. attach the wrench to the body of the manifold safety device. Do not
tighten or loosen the retaining nut containing the safety burst disc.
Figure 4-11. Manifold Safety Device Installation Example
Table 4-8. Components for Manifold Safety Device Installation Example
Item Description
1Manifold
2 2” BSP to NPT Adapter
3 NPT Tee Pipe
42” to 3/4” NPT Reducer
5 Manifold Safety Device
To Extended Manifold,
Selector Valve,
or Lockout Valve
1
2
4
5
3
Vent to Atmosphere
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