Page 348 - Centrifugal Pumps 2E

Chemical Pumps Metallic and NonmetalHc 313

Figure 15-19. NonmetalHc overhung single-stage pump built to ANSI dimen-
sions (courtesy of Ingerso!l-Rand Company).

Table 15*2
Comparison of Thermosets with Thermoplastics
Process Thermoset Thermoplastics
Average range of .030 to 2.0 .06 to .38
molded thickness
Weight range of 1 to 500 pounds .5 to 5 pounds
material per molded
piece
Glass content range by 50 % -60 % 30 % -40 % (glass
volume degrades when put
through the auger of
the injection machine)
Length of glass fiber .25 inch .060 inch
Strength Not uniform Basically uniform
throughout
(anisotropic)
Minimum annual 1,000 10,000
quantities for design
criteria