4
3
2
1
5
7
The balancing valve is a hydraulic device that
controls flow rate. The control mechanism is a
ball valve (1), operated by a control stem (2).
The flow rate is manually and properly set by
use of the convenient onboard flow meter (3)
housed in a bypass circuit on the valve body.
This circuit is automatically shut off during
normal operation. The flow rate is indicated
by a metal ball (4) sliding inside a transparent
channel (5) with an integral graduated scale (6).
The Quic also includes a inlet check
valve (7) to prevent reverse flow.
Flow meter bypass valve
The bypass valve (1) opens and closes the circuit between the flow
meter and the valve. The bypass valve is easily opened by pulling the
operating ring (2), and is automatically closed by the internal return
spring (3) when finished reading the flow rate. The spring and the
EPDM seal (4) provide a reliable seal to isolate the flow meter during
normal operation.
The operating ring (2) material has low thermal conductivity to avoid
burns if the flow meter is opened while hot fluid is passing through the
valve.
Ball/magnet indicator
The metal ball (4) that indicates the flow rate is not
in direct contact with the fluid passing through the
flow meter.
This is an effective and innovative measuring system
in which the ball slides up and down inside a
transparent channel (5) that is isolated from the fluid
flowing through the body of the flow meter. The ball
is moved by a magnet (6) connected to a float (7).
In this way the flow rate indication system
remains
perfectly clean and provides reliable readings
over time
.
Construction details
Flow meter
When activated by pulling the
operating ring (2), the flow rate
is indicated on the flow meter
housed in a bypass circuit on the
valve body. When finished reading
the flow rate, the flow meter is
automatically shut off, isolating
it during normal operation.
Use of a flow meter greatly
simplifies the process of system
balancing since the flow rate can
be measured and controlled at any
time without differential pressure
gauges or reference charts. The
onboard flow meter eliminates the
need to calculate valve settings
during system setup. Additionally,
the unique onboard flow meter
offers unprecedented time and cost
savings by eliminating the long and
difficult procedure of calculating
pre-settings associated with using
traditional balancing devices.
3
2
1
1
2
3
4
4
6
7
5
7
6
5
4
3
2
3
5
6
4
1
15
2
100
0.1
1
0.2
0.3
0.5
200
500
∆
p
(psi)
G
(l/h)
(
gpm
)
10
2
3
5
20
0.1
1
0.2
0.3
0.5
(psi) (bar)
10
2
3
5
20
0.01
0.1
0.02
0.03
0.05
1.0
0.2
0.3
0.5
4
0.4
0.4
4
0.04
0.4
1000
2000
5000
10000
20000
1
0.2
0.5
2
5
10
2
0
5
0
100
2
00
5
0
2 - 7 gpm
46.00
20.00
10.00
9.00
7.00
5.00
2.00
1.50
1.00
0.70
0.50
0.20
(feet of head)
1/2 - 1-3/4 gpm
0.05
0.05
3.00
0.30
0.11
0.003
0.005
25000
45000
Hydraulic characteristics at 100% open
2
Operating principle
Connection
Flow rate (gpm)
Fully open Cv
½" sweat
0.5 - 1.75
1.0
¾" sweat/press
0.5 - 1.75
1.0
1" sweat
0.5 - 1.75
1.0
½" sweat
2.0 - 7.0
6.3
¾" sweat/press
2.0 - 7.0
6.3
1" sweat
2.0 - 7.0
6.3
