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4.8 Monitored blocking
FIGURE 4-14: Monitored blocking device
The monitored blocking device is comprised of a ball valve, electrical monitoring component, and
a manually operated lever. The blocking is to be installed before the pressure reducer, and is rated
for both 2901 psi and 4351 psi systems. Lock is NOT included. Refer to the appropriate technical
data sheet for more information.
4.9 Pressure reducer
The pressure reducer reduces the pressure of the high pressure pipe system. The pressure reduc-
tion occurs by means of a orifice, the diameter of which is dependent on the extinguishing agent
throughput and is determined by the pipe system via the DesignManager Oxeo. It is installed
between the high pressure pipe system (3408 psi and 5294 psi or 235 bar and 365 bar) and the
nozzle pipe system, whereby any combination (if available) of the inlet and outlet connection
threads are possible. The pressure reducer is produced with conical inner thread in accordance
with two different standards:
•
ISO 7
•
ANSI/ASME B1.20.1-NPT
The pressure reducer can only fulfill its function in conjunction with the complete system. Every
deviation of the system from the design calculation (e.g. different nozzle holes) can restrict the
function of the pressure reducer. In this instance, the pressure reducer is to be redesigned.
Orifice diameters are indicated by a four digit suffix. For example, part number 25014-0118 would
correspond to a 2" NPT inlet / 2" NPT outlet pressure reducer with a 0.118" orifice diameter. See
tech data for all available pressure reducer configurations and maximum orifice sizes.
The pressure reducer is moreover available in two different variants:
Operator's Manual | Oxeo PR LCP | F_101821 Rev 02 | 08-2022 | en
Design and Function
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