26
3
C
ONFIGURATION OPTIONS
(
DIAGRAMS
)
The following sections illustrate some of the possible installation configurations that are
achievable using the basic Sentinel 2 system.
3.1
K
EY TO COMPONENTS WITHIN THE DIAGRAMS
To assist understanding of the diagrams, details of the various other components
surrounding the PRV are shown below.
Inlet water filter
Helps prevent blockages due to water quality.
3-way valve
The 3-way valve provides a means to manually switch
between control by the Sentinel2 system or an
alternative setting (typically used to be able to manually
drive the PRV pilot to give a High downstream pressure
or safety override).
HWM mechanical actuator
Provides a means to set mechanical Maximum and Minimum
on the pilot.
Pilot valve
The pilot valve fitted to the PRV.
(Image shown is for illustration purposes only)
Needle valve
The needle valve provides a restrictor that slows down
the water flow into the PRV upper chamber.
The needle valve is normally situated on the pilot rail.
(Image shown is for illustration purposes only)
Flow meter
The diagrams shows a flow meter (fitted within pipework of the outlet side).
The Sentinel2 system provides models
that can interface with various types of
flow meters (e.g. Pulse or analogue).
Input port
Output ports
Control port
Common
(to Actuator)
(to Hydroswitch
valve Common)
Pressure
Feed
