Dimensions in mm
This data sheet is designed as a guide and should not be regarded as wholly accurate in every detail. We reserve the right to amend the specification of any product without notice.
ART24 Differential Pressure
Control Valve (DPCV)
Page 8
Δ
p
b
Pressure drop across Cim 787DP
Δ
p
v
Pressure drop across Cim 767LP
Δ
p
c
Necessary pressure for the circuit
Δ
p
a
Available pressure for the riser
Δ
p
a
=
Δ
p
b
+
Δ
p
c
+
Δ
p
v
Δ
p
v
Δ
p
b
Δ
p
c
Q
Δ
p
a
Δ
p
b
Pressure drop across ART28DP
Δ
p
v
Pressure drop across ART24
Δ
p
c
Necessary pressure for the circuit
Δ
p
a
Available pressure for the riser
Δ
p
a
=
Δ
p
b
+
Δ
p
c
+
Δ
p
v
Δ
p
a
Δ
p
b
Δ
p
v
Δ
p
c
Q
Δ
p
r
Δ
p
r
Set pressure
r
=
Δ
p
b
+
Δ
p
c
Δ
p
ART24 DPCV can be installed in two configurations:
• Partner valve inside the control loop;
• Partner valve outside the control loop.
The first configuration is suitable for the plants where there are balancing valves for the
regulations of the maximun flow rates or thermostatic valves with pre-setting.
In this way, the ART28DP, or a generic regulating valve, is used to regulate the pressure
drop across the DPCV.
By closing the partner valve the pressure across the DPCV decreases and the shutter opens,
in the other way, by opening the partner valve the pressure across the DPCV increases and
the shutter closes.
This configuration does not permit to regulate the total flow rate in the branch.
This installation has the best performance in terms of control of the pressure and energy
saving. If a ART28DP is used, it is possible to measure the flow rate using a differential
pressure instrument (for quick reference use the ART28 data sheet).
The other configuration is suitable for plants where there are not devices for the limitation
and regulation of the flow rates in each emitters. The partner valve is used to set the total
flow rate in the branch. If an ART28DP is used, it is possible to measure the flow rate using
a differential pressure instrument (for quick reference use the ART28 data sheet).
Con
fi
gurations: