Flow rate adjustment
The flow rate is adjusted as follows:
Complete closing and opening of the valve
The valve can be completely closed and opened. A slot on the control
stem indicates the valve position. When the control stem is turned
fully clockwise (the slot is
perpendicular to the axis
of the valve), the valve is
fully closed (A). When the
control stem is turned
fully counter-clockwise
(the slot is parallel to the
axis of the valve), the
valve is fully open (B).
7
6
5
4
3
2
7
6
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3
2
CALEFFI
7
6
5
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3
2
CALEFFI
7
6
5
4
3
2
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2
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2
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2
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6
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4
3
2
CALEFFI
7
6
5
4
3
2
CALEFFI
7
6
5
4
3
2
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3
2
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2
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CALEFFI
7
6
5
4
3
2
CALEFFI
7
6
5
4
3
2
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6
5
4
3
2
7
6
5
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3
2
7
6
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2
7
6
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2
CALEFFI
7
6
5
4
3
2
CALEFFI
7
6
5
4
3
2
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6
5
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3
2
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2
132 series
132 series
5D
Pump
10D
A. With the aid of the flow rate indicator (1), mark the desired flow rate.
C.
While holding the bypass valve open, use a wrench to turn the valve
control stem (4) to adjust the flow rate slowly. The resulting flow rate
is indicated by the metal ball (5) that slides up and down inside a
transparent channel (6) marked by a graduated scale in gpm.
D. Once the flow rate is properly adjusted, release the operating
ring (2) of the bypass valve. The valve will automatically return to
the closed position by means of an internal spring.
E. A replacement bypass valve stem (7) with operating ring is available
in event it is damaged and inoperable. Order code F19346.
A B
Completely closed Completely open
Installation
Install the balancing valve in a location that ensures free access to
the flow meter shutoff valve, control stem and flow rate indicator. To
ensure accurate flow measurement, straight sections of pipe installed
as shown is recommended.
The valve can be installed in any position with respect to the flow
direction shown on the valve body. Additionally, the valve can be
installed either horizontally or vertically.
B.
Use the operating ring (2) to open the bypass valve slowly. This
allows fluid to flow through the flow meter (3). The bypass valve is
automatically closed under normal operating conditions.
A
B
C
D
E
