Specifications
Suction inlet
3161-99 . . . . . . . . . . . . . . . . . . 1
1
/
2
" NPT
3160-99. . . . . . . . . . . . . . . . . . . . 2" NPT
Discharge outlet
3161-99 . . . . . . . . . . . . . . . . . . 1
1
/
2
" NPT
3160-99. . . . . . . . . . . . . . . . . . . . 2" NPT
Dimensions . . . . 15
1
/
8
"L x 7
7
/
8
"W x 8
7
/
8
"H
Weight . . . . . . . . . . . . . . . . . . . . . . 41 lbs.
Basic construction . . . . . . . . . . . . cast iron
Maintenance
Make certain
that unit is
disconnected from power source before
attempting to service or remove any
component!
CLEANING
This unit has been designed with a
removable volute enabling pump to be
cleaned or unclogged with ease.
Remove casing and volute as described
in steps 1 and 2 under MECHANICAL
SEAL REPLACEMENT. Remove any debris
found inside unit, reassemble as
described in steps 16 and 17 under
MECHANICAL SEAL REPLACEMENT.
NOTE:
Depending on application it
may be necessary to remove suction and
discharge hoses.
MECHANICAL SEAL REPLACEMENT
Refer to Figures 1 and 2.
IMPORTANT:
Always replace seal seat
(Ref. No. 14), seal head (Ref. No. 13),
and shaft sleeve (Ref. No. 12) to insure
proper mating of mechanical seal
components!
1. Unthread fasteners (Ref. No. 3) and
remove casing (Ref. No. 5) and
casing seal (Ref. No. 15) from
adapter (Ref. No. 16).
2. Unthread fasteners (Ref. No. 8) and
remove volute (Ref. No. 7) from
adapter.
3. Unscrew impeller (Ref. No. 10) from
pump shaft. Remove impeller shim(s)
(Ref. No. 11), shaft sleeve, and seal
head from pump shaft.
4. Unthread fastener (Ref. No. 19) and
remove adapter from pedestal
mounting face.
5. Push seal seat from adapter recess
with a screwdriver.
6. Clean adapter recess before
inserting a new seal seat.
7. Carefully wipe polished surface of
new seal seat with a clean cloth.
8. Wet the outside of rubber portion of
seal seat with a light coating of
soapy water.
9. Press new seal seat squarely into
cavity in adapter. Use finger pressure
only to avoid scratching seal seat.
(This is a lapped surface and must be
handled very carefully.)
10. After seal seat is in place, insure that
it is clean and has not been marred.
11. Using a clean cloth, wipe shaft and
make certain that it is perfectly
clean.
12. Secure adapter on pedestal
mounting face.
Tighten hex flange
screws EVENLY to
avoid cocking rabbet on pedestal
mounting face.
13. Apply a light coating of soapy water
to the inside rubber portion of seal
head and slide onto shaft sleeve. Slip
shaft sleeve with seal head onto
pump shaft with polished face
toward polished seal seat.
Do not touch or
wipe face of
polished surface part of seal head.
14. Replace any impeller shim(s)
removed in disassembly.
15. Screw impeller back in place,
tightening until it is against shaft
sleeve.
16. Remount volute and position casing
seal in place.
IMPORTANT:
Always inspect casing
seal. Replace when cracked or worn.
Please read and save this Repair Parts Manual. Read this manual and the General Operating Instructions carefully before attempting to
assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. The Safety
Instructions are contained in the General Operating Instructions. Failure to comply with the safety instructions accompanying this product
could result in personal injury and/or property damage! Retain instructions for future reference.
Solids-Handling
Pedestal Pumps
Refer to form 1808-633-00 for General Operating and Safety Instructions.
3160-252-00
07/2002
Specifications Information and Repair Parts Manual
3160-99 and 3161-99
Description
These self-priming (to 20 ft. lift) centrifugal pumps include a clog resistant impeller
capable of handling solids as large as 3/8" diameter (up to 25% by volume). A built-
in check valve assists in priming and a mechanical shaft seal prevents leakage.
Handle liquids from 40º to 180º F (4º to 82º C). For use with nonflammable, non-
abrasive liquids compatible with pump component materials.
Performance Chart
HP
GPH of Water at Total Head in Feet
Max**
Model
Req.
10'
20'
30'
40'
50'
60'
70'
80'
90'
Head
3161-99
3
6720
6420
6000
5460
4740
3700
2500
1200
—
87 ft.
3160-99
3
9000
8400
7800
6960
6000
4800
3120
1250
—
87
(**) Shut-off; to convert to psi, divide by 2.31.