Goulds Pumps 3180-86 - IOM - Manual (Page 18)

Impeller
Impeller option Description
Open with suction
sideplate (not available
on XL1, XL2-S, and
XL2)
• Provided as standard with models 3180 and 3185 (except on XL1, XL2-S,
and XL2)
• Provided as optional with models 3181 and 3186
• Available for all sizes of pumps (except on XL1, XL2-S, and XL2)
• Is fully open, end-suction type
• Contains Francis or radial design inlet
• Constructed with large balance holes and back pump-out vanes that reduce
stuffing box pressure and axial thrust
• Keyed to the shaft and held in position by an impeller locknut
• Sealed by a Viton O-ring
• Sealed on the sleeve side by a Teflon O-ring for a dry shaft design
• Handles the tough paper stock and process services
The suction sideplate has these benefits:
• Protects against casing wear
• Removed easily
• Secured to the casing with corrosion-resistant studs and capnuts
• Sealed with a gasket and O-ring
Enclosed with wear rings
(standard on XL1, XL2-
S, and XL2)
• Standard with the 3181 and 3186
• Optional with selected sizes of the S, M, L, and XL 3180 and 3185. Standard
on XL1, XL2-S, and XL2 3180 and 3185.
• Uses replaceable impeller wear ring and casing wear ring
• Wear ring configuration allows for axial impeller adjustment to renew and
maintain proper wear ring clearances
• Can handle fine solids
Shearpeller TM with
suction sideplate
• Provided as optional with eight sizes of models for 3180 and 3185
• Is fully open, end-suction type
• Constructed with radial design inlet
• Has scalloped shroud and back pump-out vanes that reduce axial thrust
• Can handle the tough recycle mill applications
• Can handle long, stringy solids without plugging or clogging
Stuffing box cover/seal chamber
The cover functions both as a way to seal the chamber and as a replaceable wear part. It is secured with a
series of clamping lugs at the outside diameter of models 3180 and 3185, and it is through-bolted with
capscrews on models 3181 and 3186. XL1, XL2-S, and XL2 sizes are through-bolted using a frame adapter
to secure the stuffing box cover or seal chamber.
The table shows the four available design options:
Seal chamber option Description
Packed box • Uses five rings of 1/2 in. (12.5 mm) packing, plus a lantern ring
• Has a single flush connection at the lantern ring
• Has an optional second connection at the lantern ring and the stuffing box
throat
• Has a plain split gland
• Has a throat bushing
TaperBore ™ PLUS • Used with mechanical seals
• Uses an optional Vane Particle Ejector (VPE) ring for increased seal life
Product Description
16 Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual