Page 134 - HVAC Pump Handbook

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Physical Description of HVAC Pumps

Physical Description of HVAC Pumps 131

Figure 5.20 Pump casing ring construction.

5.8 Mechanical Devices for Pumps
Most HVAC pumps do not require many special mechanical devices
for them to sustain long life. Their useful life is much more depen-
dent on their selection and operation. All of this will be covered in
detail in the remaining chapters of this book. Air is a bothersome
entity to pumps, so it never hurts to find methods to get air out of a
pump. The best way, of course, is to never let it in the pump. A useful

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