27
Pressure Reducing valve (PRV)
The PRV can be fitted with
pressure connectors to
monitor the inlet and outlet
pressure, sometime these
access points are on the body
of the PRV (as shown in the
diagram) or on the pilot or
pilot rail.
(Image shown is for illustration
purposes only)
Sentinel 2 Control box
A Sentinel 2 control box is shown
opposite.
The unit has an interface for
connection to the Hydroswitch unit.
The unit has an electrical connection
to an Antenna (not shown).
The unit receives water flow
information from a flow meter
(not supplied) via a MIL-spec
co
nnector labelled “Flow”.
The unit receives upstream water
pressure information via the
connection labelled “PRV Inlet
Pressure”. This could be either
via a
plumbed-in connection to the water
(for a unit which has internal
pressure transducers) or via a MIL-
spec connector (for installations
where external pressure transducers
are being used).
The unit receives downstream water pressure information via the connection labelled
“PRV Outlet Pressure”. This could be either a plumbed
-in connection to the water (for a
unit which has an internal pressure transducer) or via an MIL-spec connector (where
external pressure transducers are used).
Detect
Inlet
Pressure
Detect
Outlet
Pressure
Detect
Water
Flow
(To Hydroswitch)