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INSTALLATION
Use pipe thread cement on the outside of male threads only.
The flowmeter may be located at any convenient point on the discharge line from the pump. On
Preset Models the base of the flowmeter casing is above the bottom of the valve. Do not clamp it in
position without using the spacers provided or making a hole for the valve.
Be sure to allow room for the removal of the strainer basket, register, and air release mecha-
nism. (See Figure 15.)
The piping on the outlet side of the flowmeter should be arranged so as to eliminate the possi-
bility of draining the measuring chamber.
All piping connected to the flowmeter must be firmly secured to prevent strain on the flowmeter
casing. The use of flexible connections to the pump or tank is recommended.
There must be no bypass connection around the flowmeter. Experience has shown that the
valve in this line will eventually leak, work open or be accidentally left open.
In order to obtain a maximum rate of delivery, the compartment outlets and the piping should be
as large as practical and the number of elbows should be reduced to a minimum. Sweep elbows
should be used wherever possible.
Blowing The Hose:
As it is impossible to blow all the liquid from the hose, the amount of liquid left
in the lines on the discharge side of the flowmeter will not be the same before and after every
delivery. It is therefore recommended that provision be made to keep the hose and outlet piping full
of liquid at all times. For this purpose a hose nozzle with a check valve should be used.
Pumping Out Underground Tanks:
In making provisions for pumping out underground tanks, DO
NOT provide any connection between the outlet of the flowmeter and the compartments or manifold.
A valve in this line which is leaky or carelessly left open will allow part of the metered liquid to be
diverted.
Air Vent Line:
The vent pipe from the air release should be
3
⁄
4
″
pipe or
1
⁄
2
″
inside diameter tubing.
Care should be taken to prevent any possible obstruction to the free flow of air through this line.
It should either be connected to the top of one of the compartments or run into a container of
about 5 gallons capacity to collect any liquid discharged with the air.
INSTALLATION
Piping
Page 1
FIGURE 1
TRUCK INSTALLATION – PETROLEUM
CAUTION
CONTAINERS EMPLOYED TO COLLECT VAPOR OR LIQUID DISCHARGED FROM THE METER VAPOR RELEASE
SHOULD BE OF SUFFICIENT SIZE TO PREVENT ANY LIQUID ESCAPE DURING NORMAL OPERATION, AND SHOULD
HAVE A SUITABLE FLAME ARRESTOR VENT. ALL VENT LINES AND FITTINGS SHOULD BE OF METAL CONSTRUC-
TION, AND ALL VALVES SHOULD BE DESIGNED SO THAT NORMAL VIBRATION DOES NOT CAUSE ACCIDENTAL
OPENING.