1 . 9
Installation & Start-Up/Operation
Apply pipe compound to male threads, to install the two
companion flanges. Tighten to a position, that allows
the meter to bolt to the companion flanges, free of pipe
stress.
When installing the flow meter, consider future mainte-
nance of both flow meter and accessories. The meter
can be serviced in place, provided block (isolation) valves
are included, and adequate space allowed.
Flow meters are designed to withstand a certain level of
vibrations, such as might be experience on retail delivery
tank trucks. If the flow meter will be used in a system
with higher levels of vibration, it must be protected with:
Vibration isolating pad under the mounting pedestal.
Vibration isolators (flexible hose) on both inlet & outlet.
In critical installations a by-pass line is recommended,
so flow can continue while flow meter is being serviced.
When an Air Eliminator is included in the flow meter
assembly, the strainer/air eliminator must be in horizontal
position, since the air eliminator operates on a gravity
principle. A few drops of liquid may be expelled when the
air eliminator vents, so vent ports should be piped back to
storage or to a collection tank (sloping towards the tank).
If an Air Check Valve is included in the flow meter as-
sembly, a modified air eliminator is used. One of the air
eliminator vents must be connected to the port on the air
check valve, using pipe, tubing or a flexible hose.
This connection must be made in the field, as we do not
know what would be a convenient/practical path for the
connection. Similarly, we do not know whether local reg-
ulations or codes dictate materials to be used for this con-
nection.
Thermal relief valves are recommended, and should be
installed whenever it is possible to block (isolate) the flow
meter between two valves. The pressure rise in a closed
system, from just a few degrees increase in temperature,
can be many times normal working pressure.
Connections for calibration should be provided during
installation. An easy means for diverting flow into a cali-
bration vessel (or master meter) should be considered.
The ideal installation incorporating all of these recommenda-
tions is shown at the bottom of the page.
Start-Up/Operation
Very slowly fill the system with liquid, to avoid operating
the flow meter on air or vapor. This can be accomplished in
the following manner:
1. Throttle the meter inlet valve, and allow the system to fill
slowly by gravity.
2. Crack open the outlet valve. Start the pump, and then
slowly crack open the inlet valve, filling the meter slowly
before fully opening the inlet and outlet valves.
In normal operations:
Avoid sudden changes in temperature.
Avoid sudden changes in flow rate.
Gradually increase or decrease the flow rate.
TRV protects portion of system, which can be
isolated between valves IV1, CV1 & IV2.
Calibration Connection valves
Therm al Relief valve
IV1 & IV2:
V1 & CV2:
BPV :
TRV:
BY-PASS LINE
IV1 IV2
TRV
TEM PORARY M ASTER M ETER
CV2
OPERATING FLOW M ETE
BPV
CV1
Isolation Valves
By-Pass valve
(or Prover Tank)
OPTIONAL
: IV2 & BPV closed, other valves open
: IV1 & IV2 closed (by-pass open)
During Calibration
: BPV, CV1 & CV2 closedNormal Operation
Service/Maintenanc
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