UGSI Encore 700, Руководство по эксплуатации и обслуживанию

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CF.440.400.001.IM.0417
ENCORE
®
700 METERING PUMP
17
d. If a pulsation dampener is required to reduce pressure peaks, install it in the
discharge line. Refer to Dwgs. 440.400.110.010, 020, 030, and 040. The
dampener will minimize vibrations and reduce wear due to long lines and/
or high stroking speeds.
NOTE: Take care not to drip pipe primer or cement into valves. This could
damage ball checks and seats.
e. Connect rigid pipe to the suction connection on the pump and run a line
without traps to the bottom of the solution container. Install a strainer.
2.4 Pipe Line Diameter
To determine the proper diameter of the suction and discharge lines, take the
following into consideration:
• Cavitation
• Overloading (elbow, valves, tees, etc.)
To avoid cavitation for shorter runs of pipe (less than 10 feet), use pipe with a
diameter at least equal to the valve connection. To avoid cavitation for longer
runs of pipe (greater than 10 feet), use pipe with a diameter at least one size
larger than the valve connection.
The following formula can be used to compute the fl uid velocity in meters/second:
Velocity = {Discharge (Q) x 0.35}
d 2
where Q = feed rate in liters/hour
d = inside diameter of pipe in mm
Select an appropriate pipe diameter that keeps the velocity in the suction line
from exceeding 0.2 meters/second.
2.5 Installation