Quantcast Figure 4-6. Typical Compound Meter Installation

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when used for cold water service covers a range of approximately 70:1 to 100:1
depending upon manufacturer, model, and size.  Other limitations are as
follows:
Temperature limit is 80F.
q
Pressure limit is 150 psig.
q
Installation is permanent.
q
Failure to observe the manufacturer's recommendations for minimum lengths of
straight pipe to be installed, both before and after the meter, may result in
inaccurate measurement and premature component wear.
4 .  INSTALLATION.  Compound meters must be installed in the flow line,
upstream of the activity or outlet they are monitoring.  These meters do
require a minimum length of straight pipe be installed before and after the
meter.  Figure 4-6 shows a typical compound meter installation. When
installing a meter, be sure the following checks have been made and the
indicated items are available.
(a) Check for meter shutoff valve upstream and downstream of meter.
(b) Check for strainer immediately upstream of meter.
BYPASS (PERMANENT OR TEMPORARY)
BFP-BACKFLOW PREVENTION DEVICE
FIGURE 4-6.
Typical Compound Meter Installation
4-10





 


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