Page 124 - HVAC Pump Handbook

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Physical Description of HVAC Pumps

Physical Description of HVAC Pumps 121

Figure 5.11 Horizontal, regenerative turbine, flexible coupled. (Courtesy Aurora
Pumps.)

The description that follows pertains to most of the HVAC pumps.
Understanding the basic parts of a pump, regardless of the type, will
be helpful in selecting and observing the operation of a pump.

5.6.1 Typical parts of a centrifugal pump
Figure 5.12 describes a typical cross section of a single-suction, flexi-
bly connected pump. The purpose of this drawing is to familiarize
designers with the generic parts of a pump. This pump drawing illus-
trates the case rings mentioned below, and it also points out most of
the parts found in HVAC pumps; some of the more important parts
are as follows:

Part name Part number
Casing, body, or volute 01
Impeller 02
Shaft 06
Inboard bearing 16
Outboard Bearing 18
Case rings 7

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