PIPING
Guidelines for piping are given in the Centrifugal Pump
section of the “Hydraulic Institute Standards” and should
be reviewed prior to pump installation.
s
!
WARNING
Never draw piping into place by forcing at the flanged
connections of the pump. This will impose dangerous
strains on the unit and cause misalignment between
pump and driver. Pipe strain can adversely effect the
operation of the pump. That could result in serious
personal injury and damage to equipment.
!
Flange loads from the piping system, including
those from thermal expansion of the piping, must
not exceed the limits of the pump. Casing deforma-
tion can result in contact with rotating parts and
result in excess heat generation, sparks and
premature failure.
1.
All piping must be supported independently and must
line up naturally with the pump flanges.
2.
Piping runs shall be designed to minimize friction
losses.
3.
DO NOT make final connection of piping to pump
until grout has hardened and pump and driver
hold-down bolts have been tightened.
4.
It is suggested that expansion loops or joints, if used,
be properly installed in suction and/or discharge lines
when handling liquids at elevated temperatures, so
linear expansion of piping will not draw pump out of
alignment (Fig. 24 & 25).
5.
The piping should be arranged to allow pump flushing
prior to removal of the unit on services handling
corrosive liquids.
6.
System should be thoroughly cleaned prior to
installation.
SUCTION PIPING
s
!
WARNING
NPSH
A
must always exceed NPSH
R
as shown on
Goulds performance curves received with order.
Reference Hydraulic Institute for NPSH and pipe
friction values needed to evaluate suction piping.
Properly installed suction piping is a necessity for trouble
free pump operation. Suction piping should be flushed
BEFORE
connection to the pump.
1.
Use of elbows close to the pump suction flange should
be avoided. There should be a minimum of 2 pipe
diameters of straight pipe between the elbow and
suction inlet. Where used, elbows should be long
radius (Fig. 26)
3298 Family Rev. 4/07
23
A
A
Fig. 24
Fig. 25
3
Summary of Contents for Goulds Pumps V 3298
Page 6: ...6 3298 Family Rev 4 07 ...
Page 26: ...26 3298 Family Rev 4 07 ...
Page 32: ...32 3298 Family Rev 4 07 ...
Page 38: ...38 3298 Family Rev 4 07 ...
Page 112: ...112 3298 Family Rev 4 07 ...
Page 115: ...3298 Family Rev 4 07 115 7 ...
Page 116: ...INTERCHANGEABILITY 3298 XS GROUP 116 3298 Family Rev 4 07 ...
Page 117: ...INTERCHANGEABILITY 3298 S GROUP 3298 Family Rev 4 07 117 7 ...
Page 119: ...INTERCHANGEABILITY 3298 L GROUP 3298 Family Rev 4 07 119 7 ...
Page 120: ...INTERCHANGEABILITY SP 3298 S GROUP 120 3298 Family Rev 4 07 ...
Page 121: ...INTERCHANGEABILITY V 3298 S GROUP 3298 Family Rev 4 07 121 7 ...
Page 122: ...INTERCHANGEABILITY V 3298 M GROUP 122 3298 Family Rev 4 07 ...
Page 124: ...124 3298 Family Rev 4 07 ...
Page 125: ...APPENDIX I 3298 HYDRAULIC COVERAGE CHARTS 3298 Family Rev 4 07 125 8 ...
Page 126: ...3298 HYDRAULIC COVERAGE CHARTS 126 3298 Family Rev 4 07 ...
Page 127: ...SP 3298 HYDRAULIC COVERAGE CHARTS 3298 Family Rev 4 07 127 8 ...
Page 128: ...SP 3298 HYDRAULIC COVERAGE CHARTS 128 3298 Family Rev 4 07 ...
Page 129: ...V 3298 HYDRAULIC COVERAGE CHARTS 3298 Family Rev 4 07 129 8 ...
Page 130: ...V 3298 HYDRAULIC COVERAGE CHARTS 130 3298 Family Rev 4 07 ...
Page 134: ...134 3298 Family Rev 4 07 ...
Page 136: ...IMPELLER TRIM PROCEDURE 136 3298 Family Rev 4 07 Fig III 2 Group S M Fig III 3 Group L ...
Page 142: ...142 3298 Family Rev 4 07 ...
