SHURflo 316 User manual

Description
SHURflo pedestal cast iron, bronze or 316 stainless steel units pump continuously, producing high flow rates under low-head
conditions. Designed for continuous low-pressure circulation and transfer of nonflammable liquids, utility, boiler feed,
general transfer, filtration, cooling towers, condensate return, marine applications, fountains, boosters, water circulation,
irrigation, spraying systems, jockey pump service, chemical processing, aggressive liquid applications and other general-
purpose pumping compatible with pump component materials where no suction lift or no self-priming is required.
• Capacities to 170 GPM, heads to 74 ft.
• 1/3 to 3 HP AC requirements (motors not included).
•Clog-resistant, semi-open metallic impellers.
•Pumps feature maintenance-free ball bearings and an easily accessible front drain plug for draining liquid.
• Maximum casing working pressure is 200 PSI.
• 3/4" to 2" female NPT inlet and outlet ports.
•Discharge port can be rotated at 90-degree intervals.
• Standard pump models (at 3450 RPM) will handle specific gravities to 1.1 (at 100 SSU or less). For specific gravities to 1.4
(at 100 SSU or less), increase motor HP by one size but not to exceed standard 3 HP motor at 3450 RPM or 65 in.-lbs. of torque
maximum. Higher specific gravity fluids are not recommended.
•Standard pump models (at 3450 RPM) will handle viscosity to 100 SSU (at 1.1 specific gravity or less) and up to 200 SSU
(specific gravity of 1.0 or less). For viscosity up to 400 SSU (specific gravity of 1.0 or less), increase motor HP by one size but not
to exceed standard 3 HP motor at 3450 RPM or 65 in.-lbs. of torque. For fluids with a viscosity greater than 400 SSU, pump
speed must be reduced below 3450 RPM.
• Cast Iron and Bronze units handle temperatures to 200° F; Stainless Steel units handle temperatures to 250° F.
• Seals: Pumps are equipped with a carbon ceramic mechanical seal having 316 stainless steel components. These seals
protect the pump shaft, which is 316 series stainless steel, from chemical exposure. Buna-N seal and o-ring in cast iron and
bronze models, with Viton seal and o-ring in 316 stainless steel models. Aftermarket options listed below.
SHURFLO CLOSE-COUPLED PUMPS – Motor-driven models with NEMA 56J motor frame and base are available.
REPAIR SEALS AND OPTIONS – Standard (Viton & Buna-N) and an upgraded (Silicon Carbide) seal are available. If abrasive
or small, particulated fluids are being pumped, an upgrade to the silicon carbide mechanical seal with Viton elastomers is
recommended. Standard and upgraded seals can be located in the repair parts list pages in this manual.
Do not use to pump flammable or explosive fluids such as gasoline, fuel oil,
kerosene, etc. Do not use in flammable and/or explosive atmospheres. When
pumping hazardous or dangerous materials, use only in room or area designated for
that purpose. For your protection, always wear proper clothing, eye protection, etc. in
case of any malfunction. For proper handling techniques and cautions, contact your
chemical supplier, insurance company and local agencies (fire dept., etc.). Failure to
comply with this warning could result in personal injury and/or property damage.
Pumps are not self-priming and cannot suction lift, flooded inlet
is required. If inlet is not flooded when the pump is running,
seal failure will result and is not covered under the manufacturer’s warranty.
Please read and save this Repair Parts Manual. Read this manual and the General Operating Instructions carefully before attempting to assemble, install, oper-
ate 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.
316 Stainless Steel, Bronze
and Cast Iron Models
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
Refer to form L-4077 for General Operating and Safety Instructions and Applicable Warranty.
Form L-4075 (12/09)
SHURflo Pedestal-Mount Centrifugal Pumps
316 Stainless Steel, Bronze and Cast Iron Models

2
316 Stainless Steel, Bronze
and Cast Iron Models
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
2
SHURflo Pedestal-Mount Centrifugal Pumps
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)
M: Motor (with base)
P: Pedestal
Model Ordering Codes and Options
Example Model: COPSV4 (will require 1 HP ODP motor with >1.15 Service Factor*)
(motor not supplied with pedestal pump)
(1) (2) (3) (4) (5) (6) (7)
CO P SV 4
CO: Centrifugal
Semi-Open
Impeller
M: Motor
(with Base)
P: Pedestal
S: 316 SS Body
and Impeller
B: Bronze Body
and Impeller
C: Cast Iron Body
and Impeller
B: Buna-N
(Stainless Steel Case)
C: Viton
(Stainless Steel Case)
(Silicon Carbide Seal
and Seat Faces)
V: Viton
(Stainless Steel Case)
1 (3⁄4"- 1")
2(1"- 11⁄4")
3(1"- 11⁄4")
4(11⁄4"- 11⁄2")
5(11⁄4"- 11⁄2")
6(11⁄4"- 11⁄2")
7(11⁄2"- 2")
1: 1⁄3
2: 1⁄2
3: 3⁄4
4: 1
5: 11⁄2
6: 2
7: 3
X: 56J
Frame
Motor
”wet-
end kit”
Example:
COMSV1X
Blank: no code
single phase
ODP motor
3: 3 phase ODP
motor
T:1phase TEFC
3T: 3 phase TEFC
1st 2nd 3rd 4th 5th 6th 7th
Series Mounting Material Seal** Impeller Sz. Motor-Mounted Only
(Mech) (NPT Ports) HP AC Type
NOTE: Not all order code combinations (configurations) are standard
models available from the manufacturer. Custom model configurations
may require ordering standard components and/or optional parts that
will need to be assembled by the customer.
Manufacturer reserves the right to change model order codes, standard
models, specifications and performance without notification.
(*) ODP motors have > 1.15 service factors. Due to service factor, it is
recommended TEFC motors are oversized by one HP increment.
Pedestal Pumps are not supplied with a motor.
(**) Unless otherwise noted, seal faces are carbon on ceramic.
To identify
your impeller
size, see chart
in owner’s
manual.

3
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)
Performance – Standard Models (Water at 70°)
COPSV1 COPBB1 COPCB1 1/3 41 37 34 25 10 - - - - 44
COPSV3 COPBB3 COPCB3 3/4 72 68 63 53 41 22 - - - 55
COPSV5 COPBB5 COPCB5 11/2115 110 104 94 81 64 40 - - 67
COPSV7 COPBB7 COPCB7 3 168 164 155 148 137 124 110 80 40 83
3450 RPM Pump Driven Speed
316 SS Bronze Cast Iron GPM of water at Total Head in Feet* Max.
Models Models Models HP** 10 15 20 30 40 50 60 70 80 Head
COPSV1 COPBB1 COPCB1 1/4 34 31 28 21 8 - - - - 30
COPSV3 COPBB3 COPCB3 1/2 59 56 52 44 34 18 - - - 38
COPSV5 COPBB5 COPCB5 1 95 91 86 78 67 53 33 - - 46
COPSV7 COPBB7 COPCB7 2 139 135 128 122 113 102 91 66 33 57
2850 RPM Pump Driven Speed
316 SS Bronze Cast Iron GPM of water at Total Head in Feet* Max.
Models Models Models HP** 7 10 14 20 27 34 41 48 55 Head
COPSV1 COPBB1 COPCB1 1/4 21 19 17 13 5 - - - - 11
COPSV3 COPBB3 COPCB3 1/3 36 34 32 27 21 11 - - - 14
COPSV5 COPBB5 COPCB5 1/2 58 55 52 47 41 32 20 - - 17
COPSV7 COPBB7 COPCB7 3/4 84 82 78 74 69 62 55 40 20 21
1725 RPM Pump Driven Speed
316 SS Bronze Cast Iron GPM of water at Total Head in Feet* Max.
Models Models Models HP** 3 4 5 8 10 13 15 18 20 Head
SS = Stainless Steel
(*) Test data taken with water at 70° F (to convert data to PSI, divide feet of head by 2.31).
Pump performance when pump is new. As pump wears, the performance will decrease.
(**) AC HP required at specified RPM is HP rated to handle up to 100 SSU at full flow, with a maximum specific gravity of 1.1, or up to 200 SSU at 1.0
specific gravity or less.
NOTES: Max. Viscosity = For viscosity up to 400 SSU (at 1.0 specific gravity or less), increase motor HP by one size but not to exceed standard 3 HP motor
at 3450 RPM or 65 in.-lbs. of torque. For fluids with a viscosity greater than 400 SSU, pump speed must be reduced below 3450 RPM.
Max. Casing PSI = 200 Max. RPM = 3450
Max. Specific Gravity = up to 1.1 for standard models (at 100 SSU or less); HP must be increased by one size for specific gravities up to 1.4.
Driver data is subject to change without notice; see label on driver for actual specifications.
Manufacturer reserves the right to change performance without notification.

SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
4
316 Stainless Steel, Bronze
and Cast Iron Models
SHURflo Pedestal-Mount Centrifugal Pumps
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)
Specifications – Standard Models
DRIVER PUMP CONSTRUCTION (Wet End)
Shaft Pedestal Port Size Ship Wt.
Model Dia. Base FNPT Shaft Housing Impeller Body Seals* (lbs.)
316 Stainless Steel Models
COPSV1 5/8" 316 SS 1" x 3/4" 316 SS 316 SS 316 SS 316 SS Viton 12
COPSV3 5/8" 316 SS 11⁄4"x 1" 316 SS 316 SS 316 SS 316 SS Viton 13
COPSV5 5/8" 316 SS 11⁄2" x 11⁄4" 316 SS 316 SS 316 SS 316 SS Viton 17
COPSV7 5/8" 316 SS 2" x 11⁄2" 316 SS 316 SS 316 SS 316 SS Viton 21
Bronze Models
COPBB1 5/8" BR 1" x 3/4" 316 SS BR BR BR Buna-N 12
COPBB3 5/8" BR 11⁄4" x 1" 316 SS BR BR BR Buna-N 13
COPBB5 5/8" BR 11⁄4" x 11⁄4" 316 SS BR BR BR Buna-N 17
COPBB7 5/8" BR 2" x 11⁄2" 316 SS BR BR BR Buna-N 21
Cast Iron Models
COPCB1 5/8" Cl 1" x 3/4" 316 SS CI CI CI Buna-N 12
COPCB3 5/8" Cl 11⁄4"x 1" 316 SS CI CI CI Buna-N 13
COPCB5 5/8" Cl 11⁄2" x 11⁄4"316 SS CI CI CI Buna-N 17
COPCB7 5/8" Cl 2" x 11⁄2"316 SS CI CI CI Buna-N 21
SS = Stainless Steel BR = Bronze CI = Cast Iron
(*) Viton shaft seals also contain 316 stainless steel, ceramic and carbon components.
Buna-N shaft seals also contain 18-8 stainless steel, ceramic and carbon components.
NOTE: Manufacturer reserves the right to change specifications without notification.

Figure 1
COPSV1 1" 3⁄4" 6.66 2.84 3.5 2.843 3 .406 3 1.875 1.437 1.875 2.656
COPSV3 11⁄4" 1" 6.63 3.31 3.5 3.312 3 .406 3.125 2.375 1.375 2.093 2.968
COPSV5 11⁄2"1
1⁄4" 6.78 3.44 3.5 3.437 3 .406 3.687 2.5 1.406 2.031 3.062
COPSV7 2" 11⁄2" 7.72 3.56 3.5 3.562 3 .406 4.187 3.5 1.593 2.875 4.25
COPBB1 1" 3⁄4"6.66 2.84 3.5 2.843 3 .406 3 1.875 1.437 1.875 2.656
COPBB3 11⁄4" 1" 6.63 3.31 3.5 3.312 3 .406 3.125 2.375 1.375 2.093 2.968
COPBB5 11⁄2"1
1⁄4" 6.78 3.44 3.5 3.437 3 .406 3.687 2.5 1.406 2.031 3.062
COPBB7 2" 11⁄2"7.72 3.56 3.5 3.562 3 .406 4.187 3.5 1.593 2.875 4.25
COPCB1 1" 3⁄4" 6.66 2.84 3.5 2.843 3 .406 3 1.875 1.437 1.875 2.656
COPCB3 11⁄4"1" 6.63 3.31 3.5 3.312 3 .406 3.125 2.375 1.375 2.093 2.968
COPCB5 11⁄2"1
1⁄4" 6.78 3.44 3.5 3.437 3 .406 3.687 2.5 1.406 2.031 3.062
COPCB7 2" 11⁄2" 7.72 3.56 3.5 3.562 3 .406 4.187 3.5 1.593 2.875 4.25
(*)Standard NPT (female) pipe thread.
NOTE: Dimensions have a tolerance of ±1/8".
Model Inlet* Outlet* CP AB D DD E H L X Y Z ZZ
Specifications
Outlet
NPT*
Inlet
NPT*
5
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
Dimensions (inches)
316 Stainless Steel, Bronze and Cast Iron Models
Keyway
Form L-4075 (12/09)

6
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
316 Stainless Steel, Bronze
and Cast Iron Models
Figure 8 -Pulley Alignment
Push the belt midway
between the pulleys,
check the deflections
(d) and adjust:
d=0.016 X L
Flexible
Coupling End
Flexible
Coupling End
Flexible
Coupling Center
Engine/Motor
Shaft
Pump
Shaft
Installation Guidelines
Make certain
that the unit is
disconnected from the power source
before attempting to service or remove
any components! Do not exceed 3600
rpm operating speed.
1. Pumps should not be directly driven
by engines.
2. Never use a rigid coupling between
apump and its driver (electric
motor, gas engine, etc.). Some
degree of flexibility must be allowed
to avoid excessive side loading of
the drive and pump bearings.
3. Flexible couplings should be rated
for the horsepower load and speed.
4. The pump and drive shaft must be
properly aligned. Misalignment will
cause unnecessary loads on the
pump and driver bearings. Shims
may be used to assist in flexible
coupling of the pump to the motor.
5. Check the impeller for proper
rotation. When viewing the pump
inlet, the impeller should rotate
counterclockwise. Test the motor
or drive for correct rotation as
indicated on the pump housing
prior to placing the pump in service.
Safety shields are
required and must be
mounted and kept in place while power is
supplied to pump drive.
Belt/Pulley Drive Installation
1. For pulley driven pumps, a single
1/2" [12.7 mm] (A or 4L section) “V”
belt is satisfactory for drive sizes
and speed up to 1 HP, 3450 RPM.
For larger sizes, double “V” belts
are recommended.
2. Mount pulleys as close to the pump
and motor engine shaft bearings as
possible. Check alignment with a
straight edge as shown in Figure 9.
Make sure the belt is properly
adjusted. Too much tension will
cause bearing failure and too little
tension will result in belt slippage
(See Figure 9). Check with the belt
and pulley suppliers for specific
information and recommendations.
3. To calculate the proper diameter of
the pump pulley,multiply the motor/
engine RPM by the diameter of the
motor/engine pulley and divide that
figure by the desired pump speed.
Pump
Pulley = Motor RPM x Motor Pulley Size
Size Desired Pump Speed
4. A safety shield (belt shield)
must be installed over the pump and
motor shafts, pulleys and belt.
NOTE:Refer to pump performance
charts to determine the desired speed
to obtain the desired maximum flow.
Direct Drive – Flexible Coupling
Installation
1. Slide the flexible coupling ends
onto the motor/engine and pump
shafts as far as possible (see
Figure 10).
2. Secure but do not tighten the
engine/motor and pump to the
selected base or location.
3. Laser alignment of the pump
shaft and the engine/motor shaft
is recommended. If this is not
possible, determine the parallel
misalignment of the pump shaft
and engine/motor shaft by placing
astraight edge across the shaft and
measuring the maximum offset
around the periphery of the shafts.
Make the necessary corrections to
keep the shafts within the parallel
misalignment limits (0.015").
4. When aligned, slide the flexible
coupling ends over the flexible
coupling center; then secure the
flexible coupling ends to the
motor/engine and pump shafts
(see Figure 10).
5. Tighten the fasteners securing the
pump and engine/motor in the
desired location.
6. A safety shield (coupling guard) must
be installed over the pump and
motor shafts and coupling.
Figure 9 - Belt Tension
Figure 10 - Flexible Coupling Installation
SHURflo Pedestal-Mount Centrifugal Pumps
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)

7
Figure 2 – Repair Parts Illustration
1
3
4
56
2
7
8
9
10
11 12
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
To order parts, contact a SHURflo Distributor or Order Direct.
Distributors can be found at www.shurfloindustrial.com.
Mech.
Seal
Slinger
o-ring
Form L-4075 (12/09)

8
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
316 Stainless Steel, Bronze
and Cast Iron Models
1Retaining ring 19942 19942 19942 19942 19942 19942 19942 19942 19942 19942 19942 19942 1
2 Shaft assembly (316 SS shaft) 23471 23471 23471 23471 23471 23471 23471 23471 23471 23471 23471 23471 1
3 Spacer 23544 23544 23544 23544 23544 23544 23544 23544 23544 23544 23544 23544 1
4 Centrifugal body 23302S 23303S 23304S 24473S 23302B 23303B 23304B 24473B 23302C 23303C 23304C 24473C 1
5 Seal & Seat Assy, Viton (Standard) 24276S 24276S 24276S 24276S – – – – – – – – 1
Seal & Seat Assy, Buna-N (Standard) – – – – 24275S 24275S 24275S 24275S 24275S 24275S 24275S 24275S 1
†Seal & Seat Assy, Viton – – – – 24276S 24276S 24276S 24276S 24276S 24276S 24276S 24276S
†Seal & Seat Assy, Buna-N 24275S 24275S 24275S 24275S – – – – – – – –
†Silicon Carbide Seal & Seat Assy 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S 2120-0039S
6 Shim Kit 24503 24503 24503 24503 24503 24503 24503 24503 24503 24503 24503 24503 1
7 Impeller 24444S 24446S 24448S 23312 24444B 24446B 24448B 15847 24444C 24446C 24448C 15970 1
8 O-ring, Viton (Standard) 23361 23362 23543 18047 – – – – – – – – 1
O-ring, Buna-N (Standard) – – – – 22848 22849 22889 18046 22848 22849 22889 18046 1
†O-ring, Buna-N 22848 22849 22889 18046 – – – – – – – –
†O-ring, Viton – – – – 23361 23362 23543 18047 23361 23362 23543 18047
9 Centrifugal housing 22858S 22859S 22860S 23364 22858B 22859B 22860B 15837 22858C 22859C 22860C 15968 1
10 Drain plug 1* 24441 24441 24441 24441 00336 00336 00336 00336 23182 23182 23182 23182 2
11 Lockwasher 2*23402 23402 23402 N/A 23402 23402 23402 N/A 23402 23402 23402 N/A 4
12 5/16-18 Hex head bolt 2* 23389 23389 23389 N/A 23389 23389 23389 N/A 23389 23389 23389 N/A 4
7/16-14 Long hex head bolt 2* N/A N/A N/A 23426 N/A N/A N/A 23426 N/A N/A N/A 23426 2
7/16-14 Short hex head bolt 2*N/A N/A N/A 23392 N/A N/A N/A 23392 N/A N/A N/A 23392 1
SS = Stainless Steel
(†) Optional
(1) Drain plug material is 316 Stainless Steel for 316 Stainless Steel models, Brass for Bronze models and Zinc-Plated Steel for Cast Iron models.
(2) Material is Stainless Steel for 316 Stainless Steel models, Zinc-plated Steel for all other models.
(*) Standard hardware item, available locally.
(**) Viton and Buna-N seals have carbon on ceramic faces.
Silicon carbide seals have Viton bellows.
All seals have 316 SS metal components.
Ref. 316 Stainless Steel Units Bronze Units Cast Iron Units
No. Description COPSV1 COPSV3 COPSV5 COPSV7 COPBB1 COPBB3 COPBB5 COPBB7 COPCB1 COPCB3 COPCB5 COPCB7 Qty
Repair Parts List
SHURflo Pedestal-Mount Centrifugal Pumps
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)

9
Maintenance
Make certain
that the unit is
disconnected from the power source before
attempting to service or remove any com-
ponents!
REMOVAL OF OLD SEAL ASSEMBLY
Should the mechanical seal (Ref. No. 5)
require repair, proceed as follows and
refer to Figures No. 2 thru 7.
IMPORTANT: Always replace both the
seal seat and seal as an assembly to
ensure proper mating of components!
1. Remove bolts (Ref. No. 12) connect-
ing the casing housing (Ref. No. 9)
to the body (Ref. No. 4).
2. Remove the casing housing (Ref.
No. 9).
Care should be taken
not to pinch or
”shave” the o-ring
gasket (Ref. No. 8) between the body and
the casing housing.
3. Remove the impeller (Ref. No. 7).
NOTE: Pump shaft must be held in
place to remove impeller.
IMPORTANT: Care should be taken to
ensure that the same number and
thickness of shim washers (Ref. No. 6)
are replaced behind the impeller as was
removed. The shim washers are located
directly behind the impeller and become
loose as the impeller is removed.
4. The seal (part of Ref. No. 5) can
now be pulled from the shaft
(see Figure 4).
5. Remove the retaining ring (Ref. No. 1)
and press the shaft assembly (Ref.
No. 2) out of the body. Take care not
to damage the impeller threads.
6. Use a wooden dowel to push out the
seal seat (part of Ref. No. 5) from the
body (Ref. No. 4). (See Figure 5.)
INSTALLATION OF NEW SEAL ASSEMBLY
The precision
carbon/ceramic faces
on the mechanical seal are easily damaged.
Handle your repair seal carefully. Do not
touch the carbon/ceramic seal faces.
IMPORTANT: Be sure that shaft
shoulder does not damage carbon face.
1. Thoroughly clean all surfaces of the
seal seat cavity in body (Ref. No. 4).
2. Using a clean cloth, wipe the shaft
and shaft sleeve and make certain
that they are perfectly clean.
NOTE: Inspect the shaft for scratches
or spiral grooves. If they exist, replace
shaft assembly (Ref. No. 2).
3. Wet the rubber portion of the new
seal seat (part of Ref. No. 5) with a
light coating of soapy water. While
wearing clean gloves or using a
clean light rag, press seal seat
squarely into body recess (Ref. No.
4). Use the cardboard washer (usu-
ally supplied with new seal) to place
over the polished ceramic surface
and use a piece of pipe or dowel
rod to press in firmly but gently (See
figure 6). Avoid scratching the
ceramic face, usually white.
4. Dispose of cardboard washer.Check
again to see that ceramic surface is
free of dirt and all other foreign
particles and that it has not been
scratched or damaged.
5. Install the pump shaft assembly
(Ref. No. 2). Replace the retaining
ring (Ref. No. 1). Be careful not to
damage the seal seat when sliding
over the pump shaft.
6. Wet the inside rubber portion of
the new seal (part of Ref. No. 5)
with a light coating of soapy water.
Slide seal onto the pump shaft
with the precision sealing surface
(carbon) facing the seal seat
ceramic face (see Figure 7). This
completes seal installation.
NOTE: Ashort “run-in” period may be
necessary to provide completely
leakproof seal operation.
7. Screw impeller (Ref. No. 7) onto
shaft. To hold the shaft from
turning, clamp with a web wrench
to prevent marring the shaft. A
drop of removable thread lock
should be applied to the impeller
threads. Impeller should be torqued
to 15 to 18 ft-lbs. (180 to 210 in-
lbs.).
8. By replacing the original shims that
came with the pump, the impeller
height should be properly set. The
chart accompanying figure 3 gives
the correct body to impeller height
dimension for optimum pump
performance. After installing, check
if shaft turns freely by spinning
impeller. If rubbing or binding is
found, remove impeller and add a
shim (Ref. No. 6) to shaft, then
recheck. Repeat procedure until all
rubbing is eliminated.
9. Place o-ring (Ref. No. 8) on pump
body. Attach housing (Ref. No. 9)
using bolts (Ref. No. 12) being care-
ful not to pinch or “shave” o-ring.
As the housing is being tightened,
periodically spin impeller to check
for interference with housing.
Seal assembly will produce minor
drag when spinning drive shaft, but rub-
bing anywhere else must be eliminated!
Otherwise, damage to pump and/or motor
may occur.
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
Impeller # Position “A”
1 0.634"-0.674"
3 0.742"-0.782"
5 0.874"-0.914"
7 0.840"-0.870"
Figure 3
IMPELLER CLEARANCE DIMENSIONS
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)

10
SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
316 Stainless Steel, Bronze
and Cast Iron Models
Figure 4 - Seal Removal Figure 5 - Seal Seat Removal
Figure7-Seal and Impeller Assembly Figure6-Seal Seat Assembly
Seal Assembly Removal and Installation (Figures 4 thru 7)
SHURflo Pedestal-Mount Centrifugal Pumps
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)

SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
Pump runs but no fluid 1. Faulty suction piping 1. Replace
2.Pump located too far from fluid source 2. Relocate
3. Gate valve closed 3. Open
4. Clogged strainer 4. Clean or replace
5. Fouled foot valve 5. Clean or replace
6. Discharge height too great 6. Lower the height
7. Suction lift too great 7. Lower pump
Pump will not prime or 1. Air leak in suction line 1. Repair or replace
retain prime after 2. Clogged foot valve or strainer 2. Clean or replace
operating 3. Leaking foot valve 3. Repair or replace foot valve
Pump starts and stops 1. Fouled impeller 1. Clean
pumping 2. Faulty mechanical seal 2. Replace
3. Leak in suction line 3. Repair
4. Leak in foot valve 4. Repair or replace
Flow rate is low 1. Incorrect speed 1. Check drive
2. Piping is fouled or damaged 2. Clean or replace
3. Clogged impeller or worn impeller 3. Clean or replace
4. Discharge line restricted or undersized 4. Flush out piping or replace
5. High discharge pressure 5. Check and reduce
Excessive noise while 1. Pump not secured to firm foundation 1. Secure properly
pump in operation 2. Piping not supported to relieve 2. Make necessary adjustments
strain on pump assembly
3. Restricted suction line 3. Clean or correct
4. Cavitation (noise like marbles in pump) 4. a. Reduce speed
b. Increase inlet size
c. Too viscous (thickness of
material being pumped
too large)
Liquid drips from point 1. Damaged mechanical seal 1. Replace (See Mechanical Seal
where shaft enters the Replacement)
pump casing when pump 2. Liquid being pumped is over 200°F 2. Lower fluid temperature
is full of liquid on Cast iron or Bronze and 250°Fon Stainless Steel
Pump runs but 1. Check pump rotation to see if it is CCW 1. On three-phase motors, switch any two
poor performance as viewed from motor face. On three-phase motor wire leads to reverse rotation.
motors, rotation must be checked prior to
running pump under load.
Troubleshooting Chart
Symptom Possible Cause(s) Corrective Action
11
316 Stainless Steel, Bronze and Cast Iron Models
Failure to check rotation before
pump is run can result in severe damage to the
pump and motor unit.
Form L-4075 (12/09)

SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
FLOW TECHNOLOGIES GROUP
5900 Katella Ave. • Cypress, CA 90630
Phone: [phone] • [phone] • Fax: [phone]
w
www.shurfloindustrial.com
Impeller Identification Chart
Impeller HP 316SS Brass Cast Iron Diameter Thickness
Number Required Part# Part# Part# inches inches
1 1/3 24444S 24444B 24444C 3.38 0.60
21/2 24445S 24445B 24445C 3.50 0.71
33/4 24446S 24446B 24446C 3.63 0.71
4 1 24447S 24447B 24447C 3.90 0.83
51-1/2 24448S 24448B 24448C 4.25 0.83
6** 223311 18021 19569 4.57 0.52
7** 3 23312 15847 15970 4.63 1.11
NOTES: **Tapered impellers
All impellers are semi-open.
Impeller Identification Chart
SHURflo Pedestal-Mount Centrifugal Pumps
316 Stainless Steel, Bronze and Cast Iron Models
Form L-4075 (12/09)
Printed in the USA