Goulds Pumps JC - IOM - Manual (Page 16)

SUCTION PIPING
1. Excessive friction losses will cause cavitation.
2. Must be kept free of air leaks, particularly in long lines
or conditions of high suction lift.
3. Flow regulating valves must not be located on suction
side of the pump.
DISCHARGE PIPING
1. Excessive friction losses result in insufficient head.
2. A check valve should be located in the discharge line
to protect the pump from reverse flow and excessive
pressure.
PIPING SUPPORT
The pumps are not designed to carry loads imposed by the
weight of the pipeline. Suction and discharge piping must
be supported near the pump, unless otherwise specified.
Pumps and subbases can be designed to carry loads due to
thermal expansion.
FOUNDATION
The foundation must be a permanent, rigid support for the
subbase or floorplate. It should be an industrially accepted
design capable of absorbing excessive vibration.
Foundations are typically concrete with anchor bolts cast in
to secure the pump.
An anchor bolt assembly consists of a bolt and washer with
a sleeve 2-½ times the diameter of the bolt. When the
assembly is cast in concrete, the washer prevents the sleeve
and bolt from being pulled. The sleeve I.D. provides an
adjustment allowance around the bolt. A lug is generally
welded on the bolt to prevent rotation when tightening.
Anchor bolts should be located in the concrete by a
template dimensioned from the pump installation drawing.
The top of the sleeve should be temporarily sealed with
waste material to prevent concrete from entering during the
concrete pouring operation. A typical anchor bolt
arrangement is shown in Figure W1.
INSTALLING PUMP ON
FOUNDATION
If subbases or floorplates were directly anchored to poured
concrete foundations, surface irregularities would cause
distortion. Rectangular metal blocks and shims, or metal
wedges having a small taper, are placed beside each anchor
bolt to level the subbase or floorplate (see Fig. W2 and Fig.
W3 on the following page). The anchor bolts are then
drawn tight enough to maintain position and level.
To secure the shims in place and provide a level surface for
the base or plate, grout is poured over the concrete
foundation. A ¾" to 1-½" grout allowance is recommended.
When subbases have cavities, grout holes are provided to
fill all spaces. After the grout has hardened, permanently
tighten the anchor bolts.
14
JC IOM 5/08