MP PUMPS FLOMAX 8 User manual

READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.
OPERATOR’S MANUAL FLOMAX 8
INCLUDING: OPERATION, INSTALLATION AND MAINTENANCE RELEASED: 12-17-21
(REV: A)
FLOMAX® 8
(Bronze and Aluminum 2” X 2”)
INGERSOLL RAND COMPANY INC
34800 BENNETT DR, FRASER, MI 48026
1-800-563-8006 [email protected] © 2021
www.gardnerdenver.com/en-us/mppumps
CC Models
Bronze
Pedestal Models
(Bronze / Aluminum)
Pedestal Engine
Mount Models (Bronze / Aluminum)
Clutch Models
(Bronze)
Hydraulic Models
(Bronze)
Aluminum
Figure 1

Page 2 of 24 FLOMAX 8 BZ AL (en)
GENERAL DESCRIPTION
FLOMAX 8:
2” x 2” Self Priming, Hydraulic Self Priming Pump
Flomax® 8 pumps utilize a semi-open impeller design to allow for passage of larger solid sizes. Several seal options are avail-
able in addition to the standard type 2100 carbon / Ceramic / Viton mechanical seal.
SPECIFICATIONS
Suction And Discharge ..............2” x 2” NPT
Application ..........................
Agricultural, Commercial, Industrial, Marine, OEM
Materials of construction ............Bronze, Aluminum
Flow
CC .................................Up to 150 gpm (548.8 lpm)
Hydraulic...........................Up to 200 gpm (662.4 lpm)
Head Feet
CC .................................Up to 100 ft (30.4 m)
Hydraulic...........................Up to 275 ft (70.1 m)
Suction lift ...........................Up to a 25 ft (7.6 m)
Impeller.............................. 5” (127 mm) Semi-open
Motor ................................Up to 3 HP (2.24 kw)
Hydraulic Motor .....................0.37 cu.in. (3.60 ml)
0.45 cu.in. (6.06 ml)
0.58 cu.in. (7.3 ml)
Hydraulic System Pressure...........Up to 1900 psi (175.8 bar)
Hydraulic Fluid Flow .................Up to 12 gpm (41.6 lpm)
Maximum Solid Size .................0.56” (14.2 mm) diameter
Drive Options ........................Close coupled 56C, Engine mount 5.5 HP, Engine mount 6.5 HP
Close coupled 145TC
Pedestal
PumPAK® (without motor)
Seal ..................................Standard carbon / Ceramic / Viton
Special seal material combinations available (Consult factory)
Max Solid Size .......................0.56”
Drive Sleeve .........................316 stainless steel
Options ..............................5 blade impeller available for higher ows, Base plate,
Double seal available for dry run applications, Flanges not included on SS models
Features .............................Renewable wear plate, Stainless steel drive sleeve,
Stainless steel fasteners.

FLOMAX 8 BZ AL (en) Page 3 of 24
OPERATING AND SAFETY PRECAUTIONS
READ, UNDERSTAND, AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE.
EXCESSIVE AIR PRESSURE
STATIC SPARK
HAZARDOUS MATERIALS
HAZARDOUS PRESSURE
WARNING
Be sure hoses and other components can
withstand fluid pressures developed by this pump.
Check any hoses for damage or wear. Be certain dis-
pensing device is clean and in proper working condi-
tion.
WARNING
IMPROPER GROUNDING. Can increase
spark and electrical shock risk, resulting in severe in-
jury or death. Ground pump and pumping system.
yThe pumping system must be grounded when it is
pumping, ushing, recirculating, or spraying amma-
ble materials such as paints, solvents, lacquers, etc.
or used in a location where surrounding atmosphere
is conducive to spontaneous combustion. Ground the
dispensing valve or device, containers, hoses, and any
object to which material is being pumped.
ySecure pump, connections, and all contact points to
avoid vibration and generation of contact or static
spark. Consult local building codes and electrical
codes for specific grounding requirements. After
grounding, periodically verify continuity of electrical
path to ground. Test with an ohmmeter from each
component (e.g., hoses, piping, pump, clamps, motor,
base plate, etc..) to ground to ensure continuity. Ohm-
meter should show 0.1 ohms or less.
WARNING
HAZARDOUS PRESSURE. Can result in
serious injury or property damage. Do not service or
clean pump while the system is pressurized.
WARNING
HAZARDOUS MATERIALS. Can cause se-
rious injury or property damage. Do not attempt to
return a pump to the factory or service center that
contains hazardous material. Safe handling practices
must comply with local and national laws and safe-
ty code requirements. Obtain Material Safety Data
Sheets on all materials from the supplier for proper
handling instructions.
CAUTION
Check pump seals, elastomers, and all
wetted parts to assure compatibility before using
commission of the product.
yVerify the chemical compatibility of the pump wetted
parts and the substance being pumped, flushed or
recirculated. Chemical compatibility may change with
temperature and concentration of the chemical(s)
within the substances being pumped, flushed or cir-
culated. For specific fluid compatibility, consult the
chemical manufacturer.
CAUTION
Maximum temperatures are based on
mechanical stress of seals and elastomers only. Cer-
tain chemicals will signicantly reduce maximum safe
operating temperature. Consult the chemical manu-
facturer for chemical compatibility and temperature
limits.
CAUTION
Be certain all operators of this equipment
have been trained for safe working practices, under-
stand it’s limitations, and wear safety goggles / equip-
ment when required.
CAUTION
Do not use the pump for the structural
support of the piping system. Be certain the system
components are properly supported to prevent stress
on the pump parts.
CAUTION
Prevent unnecessary damage to the
pump. Do not allow pump to operate in a dry run con-
dition or under cavitating conditions for extended
periods.
CAUTION
Use only genuine MP Pumps®replace-
ment parts to assure compatible pressure rating and
longest service life.
CAUTION
The mechanical seal in the pump must
not be operated dry.
CAUTION
If a pump will be idle in freezing weath-
er it should be drained or filled with the proper an-
ti-freeze.
NOTICE
Pump should be installed in the position
consistent with the manufactures specications.
NOTICE
Re-torque all fasteners before operation.
Creep of housing and gasket materials may cause
fasteners to loosen. Re-torque all fasteners to insure
against uid leakage.
WARNING
= Hazards or unsafe practices which could
result in severe personal injury, death or
substantial property damage.
CAUTION
= Hazards or unsafe practices which could
result in minor personal injury, product
or property damage.
NOTICE
= Important installation, operation or
maintenance information.
IOM INFORMATION NEEDED FOR CE
CAUTION
NOISE HAZARD. Long term noise expo-
sure while in close proximity to an operating pump
can lead to noise injuries and hearing loss. Noise can-
celling PPE and/or sound insulation is recommended
if long term exposure is unavoidable.
CAUTION
HIGH SURFACE TEMPERATURE: High sur-
face temperatures that can result in burns may devel-
op near the mechanical seal of the pump. Allow su-
cient time for pump to cool or use proper PPE before
interacting with the pump.
WARNING
EXTREME ENVIRONMENT CONDITIONS.
Consult local building, electrical, and construction
codes before installing pumps in environments prone
to extreme weather and/or geological activity.
WARNING
FLAMMABLE SUBSTANCES. Grease and
oil used in double seal pump is flammable. Avoid
exposing double seal pumps to high temperatures.
Grease Flashpoint 500°F (260°C). Oil ash point 300°F
(149°C).
WARNING
EXPLOSIVE ENVIRONMENTS. Flomax is
not ATEX Certied. Do not install pump in potentially
explosive environments.
WARNING
LIFTING AND TRANSPORT HAZARDS. Per-
sons that cannot lift more than 50lb (23Kg) should not
attempt to lift pump assemblies by hand. Do not at-
tempt to transport pumps by hand for large distances
or from high elevations. Pump and engine assemblies
should not be lifted or transported by hand.

Page 4 of 24 FLOMAX 8 BZ AL (en)
STORAGE PRECAUTIONS
Do not store filled with fluid at or below freezing temp of
process uid.
INSTALLATION
INSTALLATION FOR FLOMAX SELF PRIMING PUMPS :
For optimum performance, place pump as close to liquid
source as possible to reduce suction lift to a minimum. For
best results, pump should be installed not more than 15 feet
above the liquid supply. Set the unit on solid footing and as
nearly level as possible.
Pipe or hose of the same size as anges provided should be
used. Reinforced rubber suction hose is recommended be-
cause it provides greater flexibility and prevents collapsing
due to vacuum in the suction line when pump is in operation.
Suction line should be as short as possible and have as few el-
bows or bends as possible to keep friction loss at a minimum.
Use pipe dope on all connections and make certain that all
ttings are tight, particularly on the suction line where an air
leak can prevent priming or reduce pump capacity.
A good suction strainer should be used. Suction strainers are
available from your MP Distributor. Refer to the accessory
section of the GENERAL PUMP PRICE LIST for the correct part
number
INSTALLATION FOR FLOMAX PUMPAKS:
Be sure that the pump housing is filled with liquid before
starting the pump. THE MECHANICAL SEAL IN THE PUMP
MUST NOT BE OPERATED DRY.
Pipe or hose of the same size (or larger) as inlet and outlet
openings should be used on the installation. When using
pipe, avoid sharp bends and use long radius elbows wherev-
er possible. This will keep friction loss at a minimum and al-
low the pump to operate more eectively. Use pipe dope on
all connections and be sure all ttings are airtight, especially
on the suction side of the pump. An air leak on the suction
side of the pump will prevent proper operation. A section of
non-collapsible hose between piping and pump may be used
as a vibration dampener.
BEARING INSTALLATION (PEDESTAL MODELS):
Check the shaft to insure that it rotates freely. Shafts should
be aligned in accordance with the instructions of the cou-
pling manufacturer. Final alignment must be performed after
the pump has been completely installed and the pump and
driver are at operating temperature. Proper shaft alignment is
the responsibility of the installer.
Piping should include shuto valves on both the discharge
and suction to isolate the pump for maintenance. Provisions
for suction and discharge pressure gages are recommended
for trouble shooting. The suction line should be as short as
possible, at least as large as the pump suction connection,
include as few ttings as possible and those should be long
radius to keep friction losses at a minimum.
Both suction and discharge piping should be supported in-
dependently of the pump. Never use excessive force to move
the pipe into place. This may impose a strain that will result
in misalignment between the pump and driver or otherwise
adversely aect the operation of the pump. After connecting
pipe to the pump rotate the shaft several times to check for
rubbing or binding.
NSTALLATION FOR FLOMAX SELF PRIMING PUMPS
The permitted forces and moments on pump inlet
and outlet.
LEGENDS
F
L
- Longitudinal shear force
F
C
- Circumferential shear force
F
A
- Axial tension or compression force
M
L
- Longitudinal bending force
M
C
- Circumferential bending force
M
T
- Torsional moment
ALLOWABLE NOZZLE LOADS
Nozzle
Size
(in)
Small Flomax Flanges
Force lbs (N) Moment ft*lbs (N*m)
FL FC FA ML MC MT
1.5” 405
(1800)
405
(1800)
303
(1350)
100
(135)
149
(203)
129
(176)
2” 540
(2400)
540
(2400)
405
(1800)
177
(240)
266
(360)
230
(312)

FLOMAX 8 BZ AL (en) Page 5 of 24
MOTOR MOUNTING
Check rotation of the driver to be sure it coincides with the
required rotation of the pump. When viewed from the driver
end the rotation of the pump is CLOCKWISE.
A Pumpak shaft sleeve is machined to precisely t the shaft
of your driver. No provision is made for drive key and none is
required.
Loosen the drive clamp fasteners but do not remove. NOTE:
If the driver shaft is keyed, remove the key before attempting
to install the Pumpak. Slide the Pumpak assembly onto the
driver shaft, aligning the Cap Screw holes in the adaptor with
the tapped holes in the driver mounting face until the adap-
tor contacts the mounting face.
Install fasteners and tighten to secure Pumpak assembly to
the driver. First center then tighten the drive clamp assembly
to lock the shaft sleeve onto the driver shaft.
After all fasteners are tight including the drive clamp assem-
bly, remove the Assembly shim from the suction connection.
The shim was in place to establish clearance between the
face of the impeller and pump housing. Rotate the driver
slowly by hand to make certain that there is no rubbing.
Mounting Pumpak
Loosen impeller clamp nuts.
Do not use drive shaft key. Remove key if installed on drive
shaft.
Slide PUMPAK assembly onto the drive shaft. WARNING! If
PUMPAK does not slide freely STOP DO NOT HAMMER or
force PUMPAK. Be sure impeller clamp is loose. PUMPAK as-
semblies should slide on with hand pressure. Check for and
remove any burrs from drive shaft or bore of sleeve. Align
holes in adapter with holes in driver mounting face and slide
PUMPAK until adaptor contacts mounting face.
Attach Cap Screws and lockwashers and tighten to secure
PUMPAK assembly to driver. Tighten impeller clamp nuts to
lock impeller onto drive shaft.
TO ADJUST IMPELLER CLEARANCE:
NOTE: A shipping spacer was inserted at the factory for the
purpose of establishing the proper clearance between the
face of impeller and the wear plate.
1. Remove strip stock spacer only after tightening the
impeller.
2. Clearance between the impeller and wear plate is now
set to approximately 0.020”.
3. Turn over slowly to make certain pump rotates freely.
4. Loosen impeller clamp to adjust clearance between im-
peller and wear plate using a feeler.
5. Gauge in place of spacer. After clearance has been estab-
lished, tighten impeller clamp to lock impeller to shaft.
Torque Specications
Size Stainless Steel (ft-lbs) Steel GR5 (ft-lbs)
5/16” - 18” 10 - 14 14 - 20
3/8” - 16” 20 - 2 6 26 - 32
1/2” - 1 3” 34 - 42 70 - 80
1/2” - 20” 40 - 4 8 N/A
5/8” - 11” 75 - 85 N/A
SHIM
(24 GAUGE)
DISCHARGE
IMPELLER
WEAR PLATE
DISCHARGE
SUCTION
WEAR PLATE
IMPELLER
SHIM
(24 GAUGE)
Figure 2

Page 6 of 24 FLOMAX 8 BZ AL (en)
WORKING OF SELF PRIMING PUMP
Hd
DISCHARGE HEA
D
Hs
SUCTION HEAD
(NPSHr)
FILL PLUG
DRAIN PLUG
OVER HEAD
WATER TANK
SUCTION VALVE
UNION FLANGE
UNION FLANGE
DISCHARGE VALVE
DISCHARGE PIPE (2”)
SUCTION PIPE (2”)
MINIMIZE LENGTH & AVOID
SHARP BENDS NEAR INLET
Figure 3
OPERATING INSTRUCTIONS
The FLOMAX pump is a self-priming centrifugal pump and
only requires priming prior to its initial start. The pump will
retain sucient liquid for self priming thereafter.
Provision for a priming plug can be made by using a close
nipple and tee on the discharge opening.
A pipe plug installed in the top opening of the tee is easily
removed when necessary to prime pump. Prime pump by ll-
ing pump housing with liquid
If pump fails to prime or stops pumping, check for the follow-
ing possible causes:
1. No liquid in the pump housing.
2. Air leak in the suction line due to loose connections or
pin holes in the hose.
3. Collapsed suction line or clogged strainer.
4. Seal worn and leaking air.
5. Worn impeller - too much clearance between impeller
and wear plate.
6. Pump not running fast enough.
7. Suction lift is too high.
8. Trying to prime against too high a discharge head
Inspect the Pumpak as soon as it is received to make certain
that no parts are missing or have been broken in shipment.
Damage should be reported immediately to the shipping
company. CAUTION: Do not disturb the assembly shim in
the opening of the pump housing until after the Pumpak has
been completely assembled to the driver.
The Pumpak utilizes a single self-adjusting type mechanical
seal that is lubricated and cooled by the liquid in the pump.
NOTE: The Pump Must Never Be Operated Without Liquid
In The Housing.
WORKING OF SELF PRIMING PUMP:
A centrifugal pump operates through the transfer of rotation-
al energy from one or more driven rotors, called impellers.
The action of the impeller increases the fluid’s velocity and
pressure and directs it towards the pump outlet.
WEAR AND INSPECTION POINTS
Shaft: Inspect threads, keyways and shoulders. Replace if
damaged.
Ball bearings (Pedestal and hydraulic models): Replace if
worn, loose, or rough and noisy when rotated. If dirty, clean
with solvent, dry and coat with a good lubricant. New bear-
ings should not be unwrapped until ready for use.
Impellers: Replace if excessively worn or corroded. The im-
peller should have been statically and dynamically balanced
at the factory, and static and dynamic balance must be main-
tained for proper operation of your equipment.
Mechanical seals: Should be inspected for, lack of lubrica-
tion, misalignment, overheating, abrasive materials damage,
and corrosion.
Alignment: Proper alignment between pump shaft and
motor shaft is key to the performance of shaft seals and
bearings. Improper alignment can lead to premature pump
failure.
Pedestal Style: Inline shaft to shaft spacing is dependent
upon the coupling being used. Check the alignment carefully
between the pump and the drive.

FLOMAX 8 BZ AL (en) Page 7 of 24
SEAL REPLACEMENT INSTRUCTIONS
DISASSEMBLE THE PUMP:
Drain the system of liquid, break suction and discharge pipe
unions, and, if necessary, remove all piping from the suction
and discharge openings. Remove the fasteners holding the
pump adaptor to the driver, loosen the drive clamp assembly,
and remove the PUMPAK.
To disassemble, remove the washers and hexnuts holding the
motor adaptor to the housing. Remove the housing. The im-
peller, drive sleeve, seal bellows, and the spring assembly will
now slide forward Free of the pump adapter.
The seal seat and seat cup will remain in the pump adaptor.
If not damaged or worn, do not remove. If necessary, remove
from the adaptor counter bore with a piece of wood or a
screwdriver handle inserted through the adaptor from the
drive end. A sharp tap or two is usually sucient to knock out
the seal seat. Use caution in removing the seal seat so as not
to crack a ceramic seat.
REMOVE IMPELLER
Remove seal bellows and spring assembly. On some models,
spring keeper can also be removed now before removing im-
peller.
NOTE: The seal bellows will be bonded to the shaft sleeve
and will require some patience and caution in removal in or-
der not to damage the seal bellow and cage.
MP Pumps rebuild kits include a new drive sleeve to avoid the
possibility of damaging the drive sleeve. See back of manual
for list of seal kits and corresponding rebuild kits. Impellers
are also available if wear or damage is present.
Remove locknut from shaft; unscrew the impeller from the
shaft sleeve counter-clockwise from the impeller end.
INSPECTION:
Check all parts for wear. For ease of reassembly shaft sleeve
should have all nicks and burrs removed. Clean with light cro-
cus cloth. Replace damaged parts with new parts.
Inspect the seal seat and washer, seat cup, and seal bellows
for grooves, cuts, scumarks, or other deterioration. If any of
the parts are damaged, a complete new assembly should be
installed.
SEAL ASSEMBLY
7
654 3
2
1
ITEM NO. DESCRIPTIONQTY.
Mating Ring
2
3
4
5
6
7
1
1
1
1
1
1
1
1
O-ring
Primary Ring
Elastomer Bellows
Drive Band
Spring
Spring Holder
inspect the lapped sealing face of carbon washer (Part 3) for
wear which would necessitate replacement.
Inspect lapped sealing face of oating seat (Part 4) in adapter
housing counterbore for scung or cracks. If necessary to re-
place, press out old seat and ring, and proceed as outlined in
paragraph on MOUNTING ADAPTER.
If spring and/or bellows (Part 1 and 2) are damaged and re-
quire replacement, lubricate the impeller sleeve with a clean
light oil and slide parts o sleeve.
REASSEMBLY:
All dirt and foreign matter should be removed. Recommend
only using new seals and elastomers when reassembling a
pump.
Lubricate seal seat cup with liquid soap (P-80 emulsifier) or
clean grease and press seal seat into adaptor counter bore,
seating it firmly and squarely. Use caution so as not to mar
the lapped face of the seal seat.
Assemble shaft sleeve; seal spring keeper, impeller and im-
peller nut. Before installing seal bellows and spring assembly,
lubricate the shaft sleeve and rubber bellows with liquid soap
(P-80 emulsier) or clean grease and press bellows and spring
assembly onto the shaft sleeve. The spring should engage the
spring keeper at the impeller end of the shaft sleeve.
To be properly positioned the washer must be rmly against
the rubber bellows member and the driving lugs of the wash-
er properly engaged. The raised shoulder on the seal wash-
er should be facing away from the impeller to contact the
lapped surface of the seal seat in the adaptor.
Slide impeller and seal assembly into the adaptor. Install drive
clamp assembly on the shaft sleeve but do not tighten.
Make sure the shim is installed between the impeller and the
wear plate. Do not remove the shim material before the drive
sleeve clamp has been tightened to the motor drive shaft.
INSTRUCTIONS FOR SET SCREW TYPE SEAL:
Do not remove the seal retaining clips. Slide the seal into
place on the shaft. The end of the shaft will be recessed
approximately 0.080” ± 0.020” from the end of the seal. The
proper seal working height is achieved when the seal faces
are set ush with the seal clips in place.
With the seal clips still in place tighten the seal fasteners with
a ball end allen wrench. It is important that the allen wrench
not rest upon the seal housing during tightening as this may
aect the position of the seal on the shaft. After the seal fas-
teners have been tightened the seal clips should be removed
and saved.
Do not use the seal shim with setscrew type seal.
For bellows seal install the seal spacer on the backside of the
impeller. Use a light grease or similar tacky material. Thread
impeller onto shaft. Install jam nut. Place O-ring onto seal
plate. Install impeller/bearing housing assembly into pump
housing. Install lock washers and hex nuts. Rotate the shaft
several times to check for rubbing or binding.
BEARING REPLACEMENT INSTRUCTIONS
(PEDESTAL MODELS)
The pump utilizes a single self-adjusting type mechanical seal
that is lubricated and cooled by the liquid in the pump.
THE PUMP MUST NEVER BE OPERATED WITHOUT LIQUID
IN THE HOUSING.
Check rotation of the driver to be sure it coincides with the
required rotation of the pump. When viewed from the driver
end the rotation of the pump is CLOCKWISE.
The pump’s grease lubricated bearings are sealed. They have
been pre-lubricated at the factory and require no further
lubrication or maintenance for the life of the bearing.

Page 8 of 24 FLOMAX 8 BZ AL (en)
Electric motors or other rotating equipment used to drive the
pump should be lubricated in accordance with the manufac-
turer’s instructions.
DISASSEMBLY:
Drain the housing by removing the drain plug. Remove the
hex nuts and lock washers from the housing studs. Slide the
bearing housing/impeller assembly out of the housing. It
may be necessary to rotate the driver shaft out of the way.
With the bearing /impeller assembly on a bench secure shaft,
unthread impeller nut then unthread impeller. Remove the
seal from the shaft. Lift o the seal plate. Place the seal plate
face down on the bench and press the seal seat out.
Remove the snap ring from the backside of the bearing hous-
ing. With a soft mallet, loosen the shaft assembly by tapping
the impeller end then slide the bearing assembly from the
housing. Press the bearings from the shaft.
ASSEMBLY:
Press bearings onto the shaft. Slide the shaft / bearing assem-
bly into the bearing housing and install the snap ring. Place
seal housing face up on bench. Lubricate non-PTFE seal seat
with water-soluble lubricant and gently press into seal hous-
ing. If pinned seat is used be certain that pin is in place, lined
up with groove in seal seat. Place seal housing onto pilot of
bearing housing. Lubricate shaft with water-soluble lubricant.
Slide seal onto shaft.
MAINTENANCE
The FLOMAX pump is of simple construction with only one
moving part. The impeller on the FLOMAX 8 is threaded to
a stainless steel drive sleeve. The sleeve slips over the drive
shaft and is locked to the drive shaft with a two-piece clamp.
This means you use a standard drive shaft - no special tapers
or threads. It's easy to adjust or remove the impeller. FLO-
MAX pumps are available with either a selflubricated shaft
seal, or a grease lubricated shaft seal. The self-lubricated seal
is lubricated by the liquid in the pump. Operating the pump
dry will seriously damage the seal.
To lubricate the grease lubricated seal, turn the wing nut on
the grease cup to the left - counter clockwise. If the pump
is to be left standing idle for any length of time in freezing
conditions, the pump housing should be drained. Draining is
provided for by a drain plug located at the base of the pump
housing.
DISASSEMBLY
Disconnect power (or spark plug wire) to prevent accidentally
starting.
Disconnect lines and drain pump housing.
TO REMOVE PUMP HOUSING
Remove Cap Screws and nuts holding pump housing to mou-
nting base (where used).
Remove nuts and lockwashers holding pump housing to the
adapter.
Loosen the housing and remove carefully to prevent tearing
gaskets.
TO REMOVE IMPELLER
If pump is equipped with a grease lubricated seal, relieve
pressure in grease cup by turning wing handle to the right -
clockwise.
Remove impeller clamp nuts and clamp to unlock impeller
drive sleeve from drive shaft.
Use two “jimmy” bars or large screwdrivers diagonally across
from each other between adapter and end of drive sleeve.
Pry the sleeve o the drive shaft.
Before removing the seal from the impeller, inspect the
carbon washer. If nicked or worn - replace it with a new one.
Inspect the seal seat (still in the pump adapter). If no nicks,
scratches or cracks appear and surface is clean and smooth,
there is no need to replace it. If replacement is necessary,
remove adapter by removing four hex nuts and washers.
Place adapter on at surface, with impeller side down. Press
out seal seat by using wooden end of a screw driver or similar
tool.
TO REPLACE IMPELLER
On the two-piece impeller it is not necessary to remove the
seal. Place impeller drive sleeve between two pieces of wood
in a vise. Hold impeller sleeve carefully so you do not damage
the seal assembly. Hold rmly and unthread impeller by turn-
ing counterclockwise - left hand. Replace with a new impeller.
Be sure seal spring ts over hub on back of impeller.
TO REMOVE ADAPTER
Remove the four nuts and lockwashers. Loosen and remove
adapter.
TO REMOVE WEAR PLATE
After pump housing has been removed from the adapter,
inspect the wear plate. If wear plate is badly worn, it should
be replaced. To remove wear plate, loosen and remove acorn
nuts and gaskets on the outside of the pump housing.
CAUTION: When replacing wear plate, be sure to use new
gaskets under acorn nuts to seal against air leaking in on suc-
tion side during priming cycle.
INSPECTION
After pump has been disassembled, check all parts over care-
fully for wear or damage. When ordering parts for your pump,
be sure to specify model and serial numbers shown on name
plate.
REASSEMBLY
MOUNTING ADAPTER
Before mounting adapter, clean counterbore with cleanser.
Clean and lubricate with light oil the synthetic rubber mem-
ber on seal seat and press (do not drive) the assembly into
the adapter counterbore, seating it rmly and squarely.
Install adapter. Install lockwashers and tighten four nuts
evenly.
CAUTION: In handling, avoid dropping seat and take particu-
lar care not to scratch the lapped face.
MOUNTING SELF-LUBRICATED SEAL ASSEMBLY
Mount seat and seat ring (Part 4 and 5) as outlined above.
Inspect impeller sleeve for nicks and burrs. Polish sleeve with
fine emery or crocus cloth. Then clean and lubricate with a
clean light oil.
Slip the coil spring (Part 1) onto the impeller sleeve making
certain that it is seated properly on the shoulder of the impel-
ler.

FLOMAX 8 BZ AL (en) Page 9 of 24
Lubricate the inside of the washer and bellows assembly (Part
2 and 3) with a clean light oil and slide it onto the impeller
drive sleeve only until it clears the chamfer.
Slide the seal bellows and washer assembly onto the impeller
drive sleeve. Push the seal down over the drive sleeve with
even pressure. Pull the seal head back up to the position
where there is no spring load. This insures proper assembly
on the drive sleeve.
Before sliding the impeller onto the drive shaft, wipe the
lapped sealing faces of the oating seat (Part 4) in the adapt-
er counterbore and the carbon washer (Part 3) on the bellows
assembly perfectly clean. Then lubricate both faces with a
clean light oil.
NOTE: The assembly of impeller and seal to the drive shaft
should take place as soon as the bellows assembly is slipped
on the impeller sleeve so as to avoid bonding of the bellows
to the sleeve at improper working height.
CAUTION: Foreign matter between sealing faces will cause
leakage and shorten the life of the seal.
MOUNTING GREASE LUBRICATED SEAL ASSEMBLY
Apply P80 to seal seat bore in seal housing and around O-ring
on carbon seal seat. Then press seal seat, by hand, into seal
seat bore making sure marked side of seal seat is down. Clean
and inspect for cracks, chips and deformities.
Dot
Groove
O Ring
O Ring
Figure 5
Place gasket over studs and O-ring into groove then install
seal housing over studs with seal facing up with ¼ NPT holes
at 2 o’clock and 7 o’clock position. Inspect and wipe clean if
needed. Apply P80 to impeller drive sleeve and to interior
of seal bellows, and push onto drive sleeve with seal pusher
with silicon carbide seal facing downward towards impeller.
The silicon carbide face is a matte light gray. The carbon face
is a very dark gray/black. See the picture below. Some seals
have the same primary seal face and therefor the direction
does not matter.
Carbon
Seal Face (black)
Silicon Carbide
Seal Face (gray)
To
wards
Impeller
Figure 6
Install seal spring over drive sleeve onto backside of silicon
carbide seal. Apply P80 to interior seal bellows of carbon seal
and push over drive sleeve with seal pusher carbon face up.
Inspect and wipe clean, if necessary. Install gasket over studs
onto seal housing. Apply P80 to seal seat bore of adapter and
around O-ring on seal seat. Push seal seat, by hand, into seal
bore – clean and inspect.
Install O-ring into adaptor groove. Apply P80 to O-ring. Place
adapter onto seal housing gasket, handle hole up, and attach
using 6 hex nuts and lock washers. Assemble clamp assembly
over drive sleeve. Leave loose.
Apply Gasoila onto threads of grease fitting and install to
lower pipe tting hole at 10 o’clock position in seal housing
and tighten by hand. NOTE: Do not get sealant into grease
fitting. Apply Gasoila to 1/8” NPT plug and install into pipe
tting at 5 o’clock position. Apply Gasoila to pressure release
valve threads and install into upper pipe tting hole at the 10
o’clock position.
Fill seal cavity with grease until it comes out of the reservoir
hole. Assembly grease reservoir into adaptor as shown below.
Place smaller O-ring over the piston. Place the large O-ring
over the reservoir cover. Install the piston into the adaptor
hole. Place the spring within the piston. Thread the cover
into the adaptor.
Figure 7
Continue filling seal cavity until high-pressure grease reser-
voir is full. NOTE: When grease reservoir is full it will spit out
of the pressure release valve.

Page 10 of 24 FLOMAX 8 BZ AL (en)
MOUNTING SEVERE-SERVICE SEAL ASSEMBLY
The MP PUMPS Severe-Service Seal is a precision assembly
requiring care in installation. To insure proper operation it is
necessary to install this seal as follows:
1. Thoroughly clean the seal seat cavity in the pump adapter.
2. Lubricate the seal seat O-Ring with light oil and carefully
install the seat into the seal cavity that is inside the
adapter.
3. Using a soft clean cloth, clean and lubricate both seal faces
with light oil.
NOTE: Any foreign matter between seal faces will cause
leakage and shorten seal life.
4. Complete assembly of seal and pump - see above.
5. Rotate by hand before start up.
MOUNTING IMPELLER
Do not use drive key between drive shaft and impeller sleeve.
The clamp will drive the sleeve. Slide the impeller sleeve onto
the drive shaft. Replace impeller clamp and capscrews, lock-
washers and nuts.
Before tightening clamp adjust clearance between back face
of impeller and adapter allowing from 0.015” (0.381 mm) to
0.020” (0.508 mm) clearance. Tighten impeller clamp to lock
impeller onto drive shaft. This automatically sets face clear-
ance of impeller when housing is mounted.
MOUNTING PUMP HOUSING
Replace gaskets on pump housing and mount housing on
the adapter. Replace two lockwashers and nuts on studs di-
agonally across from each other and tighten. Tum drive shaft
over slowly by hand and listen at outlet opening on housing
for any rubbing of impeller on the housing or wear plate.
The clearance between the impeller and wear plate can be
checked with a feeler gauge. Normal clearance is 0.015” (0.381
mm) to 0.020” (0.508 mm). If clearance exceeds 0.025” (0.635
mm) readjust impeller. If the impeller rubs use an additional
gasket to space impeller.
After clearance has been established, replace lockwashers
and nuts on remaining studs and tighten. If capscrews and
nuts are used to hold housing to mounting base, rep{ace
these and tighten.

FLOMAX 8 BZ AL (en) Page 11 of 24
PARTS LIST / FLOMAX 8 CC (56C and 145TC) (BRONZE)
1
7
8
9
2
10
6
5
1
11
12 13
14
15 16
17 18
19
23
21
20
24
22
4
3
2
Figure 8
PARTS LIST / FLOMAX 8 (56C and 145TC) (BRONZE)
Item Description (size) Qty Part No. Mtl
1Cap Screw
(HH 5/16” - 18” x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 8 MP21238 304 SS
3 Suction Flange 1 MP22386 Federalloy I-836
4 Flapper Assembly 1 MP23022 Buna
5 Pipe Plug (HH 1/4” NPT) 1 MP21267 316 SS
6 Housing 1 MP22250 Federalloy I-836
7 Discharge Flange 1 MP22310 Federalloy I-836
8 Square Ring 1 MP39436 Viton
9 Pipe Plug 1 MP22656 303 SS
10 Wear Plate 1 MP22259 Brass
11 Screw (FHS 5/16” - 18” x 5/8”) 2 MP37137 304 SS
12 Hex Jam Nut 1 MP22655 304 SS
13 Impeller 1 MP22292 Federalloy I-836
Item Description (size) Qty Part No. Mtl
14 Drive Sleeve (7/8”) 1 MP25664 303 SS
Drive Sleeve (5/8”) 1 MP22253 303 SS
15 See Table for seal options
16 O-Ring AS-568-158) 1 MP34555 Viton
17 Seal Housing 1 MP38706 Federalloy I-836
18 Cap Screw (3/8”-16” x 7/8”) 4 MP21251 304 SS
19 Lockwasher (3/8” x 1/8”) 4 MP21266 304 SS
20 Adapter 1 MP38704 Aluminum T-6
Cast
21 Hex Jam Nut (1/2 “- 13”) 1 MP22637 Steel
22 Handle 1 MP21938 Steel
23 Cap Screw
(5/16” - 18” x 3/4” Patch) 6 MP24965 304 SS
24
Clamp Assembly
(3/4" and 5/8") 1 MP23002 316 SS
Clamp Assembly (7/8") 1 MP23003 316 SS
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS

Page 12 of 24 FLOMAX 8 BZ AL (en)
PARTS LIST / FLOMAX 8 PEDESTAL (BRONZE)
5
10
11
12 13
14
15 16
17
18
19 21
22
20
2
1
7
8
9
2
6
1
4
3
2
Figure 9
PARTS LIST / FLOMAX 8 PEDESTAL (BRONZE)
Item Description (size) Qty Part No. Mtl
1Cap Screw
(HH 5/16”-18” x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 14 MP21238 304 SS
3 Suction Flange 1 MP22386 Federalloy I-836
4Flapper Assembly 1 MP23022 Buna
Flapper Assembly 1 MP26097 EPDM
5 Pipe Plug (HH 1/4” NPT) 1 MP21267 316 SS
6 Housing 1 MP22250 Federalloy I-836
7 Discharge Flange 1 MP22310 Federalloy I-836
8Square Ring 1 MP39436 Viton
O-Ring (AS-568-149) 1 MP37142 Epdm
9 Pipe Plug 1 MP22656 303 SS
10 Wear Plate 1 MP22259 Brass
Wear Plate 1 MP27978 316 SS
11 Screw (FHS 5/16”-18” x 5/8”) 2 MP37137 304 SS
12 Hex Jam Nut 1 MP22655 304 SS
Item Description (size) Qty Part No. Mtl
13 Impeller (5.0”) 1 MP22292 Federalloy I-836
14 Drive Sleeve 1 MP22286 303 SS
15 See Table for seal options
16 O-Ring (AS-568-158) 1 MP34555 Viton
O-Ring (AS-568-158) 1 MP36911 Epdm
17 Gasket 1 MP22255 Lexide Ni-2085
18 Adapter 1 MP22246 Federalloy I-836
19 Cap Screw
(5/16” - 18” x 3/4” Patch) 6 MP24965 304 SS
20 Cap Screw SS
(HH 5/16” - 24” x 0.88”) 4 MP21278 304 SS
21 Clamp Assembly
(3/4" and 5/8") 1 MP23002 303 SS
22 Pedestal Assembly 1 MP26142 Cast Iron
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS
MP27969 21 1" Ceramic Carbon Epdm 18-8 SS

FLOMAX 8 BZ AL (en) Page 13 of 24
PARTS LIST / FLOMAX 8 CLUTCH (BRONZE)
5
10
11
12 13
14
15 16
17
18
19 21
20
2
1
7
8
9
2
6
1
4
3
2
22
26
27
29
23
24
28
25
30
Figure 10
PARTS LIST / FLOMAX 8 CLUTCH (BRONZE)
Item Description (size) Qty Part No. Mtl
1Cap Screw
(HH 5/16” - 18” x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 14 MP21238 304 SS
3 Suction Flange 1 MP22386 Federalloy I-836
4Flapper Assembly 1 MP23022 Buna
Flapper Assembly 1 MP26097 EPDM
5 Pipe Plug (HH 1/4” NPT) 1 MP21267 316 SS
6 Housing 1 MP22250 Federalloy I-836
7 Discharge Flange 1 MP22310 Federalloy I-836
8 O-Ring (AS-568-149) 1 MP37142 Epdm
9 Pipe Plug 1 MP22656 303 SS
10 Wear Plate 1 MP22259 Brass
Wear Plate 1 MP27978 316 SS
11 Screw (FHS 5/16” - 18” x 5/8”) 2 MP37137 304 SS
12 Hex Jam Nut 1 MP22655 304 SS
13 Impeller (5.0”) 1 MP22292 Federalloy I-836
Impeller (5.0”) 1 MP22294 316 SS
14 Drive Sleeve 1 MP22286 303 SS
Drive Sleeve 1 MP33592 Duplex 2205
15 See Table for seal options
Item Description (size) Qty Part No. Mtl
16 O-Ring (AS-568-158) 1 MP34555 Viton
O-Ring (AS-568-158) 1 MP36911 EPDM
17 Gasket 1 MP22255 Lexide Ni-2085
18 Adapter 1 MP22246 Federalloy I-836
19 Cap Screw
(5/16” - 18” x 3/4” Patch) 6 MP24965 304 SS
20 Cap Screw
(SS HH 5/16” - 24” x 0.88”) 4 MP21278 304 SS
21 Clamp Assembly 1 MP23002 303 SS
22 Pedestal Assembly 1 MP26289 Cast Iron
23 Clutch Bracket (Right) 1 MP24434 Cold Rolled
Steel
24 Clutch Bracket (Left) 1 MP24433 Cold Rolled
Steel
25 Yok e 2 MP24430 Zinc Plated Steel
26 Clutch (A-B Belt) 1 MP28905 Steel
27 Hexnut (1/4” - 20”) 3 MP21241 304 SS
28 Lockwasher (1/4") 3 MP33564 304 SS
29 Screw (1/4” - 20” x 3/4”) 3 MP21247 304 SS
30 Handle 1 MP24431 Zinc Plated Steel
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS

Page 14 of 24 FLOMAX 8 BZ AL (en)
PARTS LIST / FLOMAX 8 PEDESTAL ENGINE MOUNT (BRONZE)
1
7
8
9
2
10
6
5
1
11
12 13
14
15 16
17
18
19
20
21
22
4
3
2
Figure 11
PARTS LIST / FLOMAX 8 PEDESTAL ENGINE MOUNT (BRONZE)
Item Description (size) Qty Part No. Mtl
1 Cap Screw (HH 5/16”-18”x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 10 MP21238 304 SS
3 Suction Flange 1 MP22386 Federalloy
I-836
4 Flapper Assembly 1 MP23022 Buna
5 Pipe Plug (HH 1/4” NPT) 1 MP21267 316 SS
6 Housing 1 MP22250 Federalloy
I-836
7 Discharge Flange 1 MP22310 Federalloy
I-836
8 Square Ring 1 MP39436 Viton
9 Pipe Plug 1 MP22656 303 SS
10 Wear Plate 1 MP22259 Brass
11 Screw (FHS 5/16” - 18” x 5/8”) 2 MP37137 304 SS
12 Hex Jam Nut 1 MP22655 304 SS
Item Description (size) Qty Part No. Mtl
13 Impeller (5.0”) 1 MP22292 Federalloy
I-836
Impeller (5.0”) 1 MP22294 316 SS
14 Drive Sleeve 1 MP22286 303 SS
Drive Sleeve 1 MP33592 Duplex 2205
15 See Table for seal options
16 O-Ring (AS-568-158) 1 MP34555 Viton
O-Ring (AS-568-158) 1 MP36910 Buna
17 Gasket 1 MP22255 Lexide
Ni-2085
18 Adapter 1 MP22246 Federalloy
I-836
19 Cap Screw (5/16” - 18” x 3/4” Patch) 6 MP24965 304 SS
20 Hex Jam Nut (1/2” - 13”) 1 MP22637 Steel
21 Handle 1 MP21938 Steel
22 Clamp Assembly (3/4" and 5/8" ) 1 MP23002 304 SS
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS
MP25015 21 1" Ceramic Carbon Buna 18-8 SS

FLOMAX 8 BZ AL (en) Page 15 of 24
PARTS LIST / FLOMAX 8 HYDRAULIC (0.22, 0.37, 0.45 and 0.58) (BRONZE)
5
10
11
12 13
14
15 16
17
18
19 21
22
20
1
7
8
9
2
6
1
4
3
2
Figure 12
PARTS LIST / FLOMAX 8 HYDRAULIC (0.22, 0.37, 0.45 and 0.58) (BRONZE)
Item Description (size) Qty Part No. Mtl
1Cap Screw
(HH 5/16” - 18” x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 10 MP21238 304 SS
3 Suction Flange 1 MP22386 Federalloy I-836
4 Flapper Assembly 1 MP23022 Buna
5 Pipe Plug (1/4” NPT) 1 MP41475 Steel
6 Housing 1 MP22250 Federalloy I-836
7 Discharge Flange 1 MP22310 Federalloy I-836
8 Square Ring 1 MP39436 Viton
9 Pipe Plug 1 MP22656 303 SS
10 Wear Plate 1 MP22259 Brass
11 Screw (FHS 5/16”-18” x 5/8”) 2 MP37137 304 SS
Item Description (size) Qty Part No. Mtl
12 Hex Jam Nut 1 MP22655 304 SS
13 Impeller 1 MP22292 Federalloy I-836
14 Drive Sleeve 1 MP22286 303 SS
15 Seal Assembly 1 MP22272 Ccs Viton
16 O-Ring (AS-568-158) 1 MP34555 Viton
17 Gasket 1 MP22255 Lexide Ni-2085
18 Adapter 1 MP22246 Federalloy I-836
19 Cap Screw
(5/16”-18” x 3/4” Patch) 6 MP24965 304 SS
20 Cap Screw SS
(HH 5/16” - 24” x 0.88”) 4 MP21278 304 SS
21 Clamp Assembly 2 MP23002 303 SS
22 Hyd Ped Asy (0.372”) 1 MP36447 Cast Iron
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS

Page 16 of 24 FLOMAX 8 BZ AL (en)
PARTS LIST / FLOMAX 8 CC (56C and 145TC) (ALUMINUM)
1
9
10
11
2
7
8
12
6
5
1
13
14 15
16
17 18
19 22
23
21
20
24
4
3
2
Figure 13
PARTS LIST / FLOMAX 8 CC (56C and 145TC) (ALUMINUM)
Item Description (size) Qty Part No. Mtl
1Cap Screw
(HH 5/16” - 18” x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 10 MP21238 304 SS
3 Suction Flange 1 MP22385 Aluminum
T-6 Cast
4 Flapper Assembly 1 MP23022 Buna
5 Lockwasher (5/16” x 18”) 10 MP21238 304 SS
6 Housing 1 MP22248 Aluminum T356
7 Drive Screw 2 MP21122 304 SS
8 Name Plate 1 MP21183 Aluminum
9 Flange 1 MP22309 Aluminum 356
T-6 Cast
10 O-Ring (AS-149) 1 MP37141 Viton
11 Pipe Plug (1/2" NPT ) 1 MP37140 Zinc Plated Steel
12 Wear Plate 1 MP22258 Aluminum
#6061
13 Screw (FHS 5/16” - 18” x 5/8”) 2 MP37137 304 SS
14 Hex Jam Nut 1 MP22655 304 SS
Item Description (size) Qty Part No. Mtl
15
IMPELLER (4.6”) 1 MP26007 Aluminum
T-6 Cast
IMPELLER (5.0”) 1 MP22291 Aluminum
T-6 Cast
16 Drive Sleeve (5/8”) 1 MP22253 303 SS
Drive Sleeve (7/8”) 1 MP25664 303 SS
17 See Table For Seal Options
18 O-Ring (AS-568-158) 1 MP34555 Viton
19 Gasket 1 MP22255 Lexide Ni-2085
20 Adapter 1 MP25946 Aluminum
T-6 Cast
21 Cap Screw
(5/16” - 18” x 3/4” Patch)6 MP24965 304 SS
22 Cap Screw (3/8” - 16” x 7/8”) 4 MP21251 304 SS
23 Lockwasher (3/8” x 1/8”) 4 MP21266 304 SS
24
Clamp Assembly (7/8”) 1 MP23003 303 SS
Clamp Assembly
(3/4 “and 5/8”) 1 MP21946 303 SS
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS

FLOMAX 8 BZ AL (en) Page 17 of 24
PARTS LIST / FLOMAX 8 PEDESTAL (ALUMINUM)
5
10
11
12 13
14
15 16
17
18
19 21
22
20
2
1
7
8
9
2
6
1
4
3
2
Figure 14
PARTS LIST / FLOMAX 8 PEDESTAL (ALUMINUM)
Item Description (size) Qty Part No. Mtl
1Cap Screw
(HH 5/16” - 18” x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 14 MP21238 304 SS
3 Suction Flange 1 MP22385 Aluminum
T-6 Cast
4 Flapper Assembly 1 MP23022 Buna
5 Pipe Plug (HH 1/4” NPT) 1 MP21267 316 SS
6 Housing 1 MP22248 Aluminum T356
7 Flange 1 MP22309 Aluminum
356 T-6 Cast
8 O-Ring (AS-149) 1 MP37141 Viton
9 Pipe Plug (1/2" NPT ) 1 MP37140 Zinc Plated Steel
10 Wear Plate 1 MP22258 Aluminum #
6061
11 Screw (FHS 5/1”6 - 18” x 5/8”) 2 MP37137 304 SS
Item Description (size) Qty Part No. Mtl
12 Hex Jam Nut 1 MP22655 304 SS
13 Impeller 1 MP22291 Aluminum T-6
Cast
14 Drive Sleeve 1 MP22286 303 SS
15 See table for seal options
16 O-Ring (AS-568-158) 1 MP34555 Viton
17 Gasket 1 MP22255 Lexide Ni-2085
18 Adapter 1 MP22245 Aluminum
356 T-6 Cast
19 Cap Screw
(5/16” - 18” x 3/4” Patch) 6 MP24965 304 SS
20 Cap Screw SS
(HH 5/16” - 24” x 0.88”) 4 MP21278 304 SS
21 Clamp Assembly 1 MP23002 303 SS
22 Pedestal Assembly 1 MP26142 Cast Iron
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS
MP22560 21 1" Silicon Carbide Silicon Carbide Viton 316 SS

Page 18 of 24 FLOMAX 8 BZ AL (en)
PARTS LIST / FLOMAX 8 PEDESTAL ENGINE MOUNT (ALUMINUM)
1
7
8
9
2
10
6
5
1
11
12 13
14
15 16
17
18
21
19
20
22
4
3
2
Figure 15
PARTS LIST / FLOMAX 8 PEDESTAL ENGINE MOUNT (ALUMINUM)
Item Description (size) Qty Part No. Mtl
1Cap Screw
(HH 5/16” - 18” x 7/8”) 8 MP21242 304 SS
2 Lockwasher (5/16” x 18”) 10 MP21238 304 SS
3 Suction Flange 1 MP22387 Cast Iron
4 Flapper Assembly 1 MP23022 Buna
5 Pipe Plug (HH 1/4” NPT) 1 MP21267 316 SS
6 Housing 1 MP22248 Aluminum
T356
7 Flange 1 MP22311 Cast Iron
8 O-Ring (AS-149) 1 MP37141 Viton
9 Pipe Plug (1/2" NPT ) 1 MP37140 Zinc Plated
Steel
10 Wear Plate 1 MP22258 Aluminum
#6061
11 Screw (FHS 5/16” - 18” x 5/8”) 2 MP37137 304 SS
12 Hex Jam Nut 1 MP22655 304 SS
Item Description (size) Qty Part No. Mtl
13 Impeller (5.0”) 1 MP22291 Aluminum
T-6 Cast
Impeller (5.0”) (5BL) 1 MP33333 CF8M
14 Drive Sleeve 1 MP22286 303 SS
15 See table for seal options
16 O-Ring (AS-568-158) 1 MP34555 Viton
17
Gasket 1 MP22255 Lexide Ni-
2085
Gasket 1 MP35722 Klingersil
C-44332
18 Adapter 1 MP22245 Aluminum
356 T-6 Cast
19 Cap Screw
(5/16” - 18” x 3/4” Patch) 6 MP24965 304 SS
20 Handle 1 MP21938 Steel
21 Hex Jam Nut (1/2” - 13”) 1 MP22637 Steel
22
Clamp Assembly
(3/4” and 5/8”) 1 MP23002 303 SS
Clamp Assembly (7/8”) 1 MP35612 Brass
SEAL TYPE OPTIONS
Seal PN Seal Type Shaft Dia. Mating Ring Material
Primary Ring Elastomer Components
MP22273 21 1" Ceramic Carbon Viton 316 SS
MP35610 2 1" Silicon Carbide Carbon Viton 18-8 SS

FLOMAX 8 BZ AL (en) Page 19 of 24
SERVICE KITS
PUMP MODEL PUMP DESCRIPTION SEAL KIT IMPELLER KIT BEARING KIT
MP36503 FM8PMP A:1.5-3 56C FA 4.1 WBA MP51310 ---- ----
MP38702 FM8PMP A:3-1 56C MTO FA 5.0 WBA MP51310 ---- ----
MP21336 FM8PMP A:PED 5.0 MP51310 ---- MP51315
MP37945 FM8PMP A:PED 5.0 SSC ---- ---- MP51315
MP51157 FM8PMP A:PED/HYD .45 DISP W/FC 5.0 MP51310 ---- #N/A
MP51083 FM8PMP B: 3-3 182T XP 5.0SI SSWP WBA ---- ---- MP51315
MP35752 FM8PMP B:3-1 182T 5.0 WBA ---- ---- MP51315
MP30675 FM8PMP B:3-3 182T 5.0 WBA ---- ---- MP51315
MP21338 FM8PMP B:PED 5.0 ---- ---- MP51315
MP37003 FM8PMP B:PED 5.0SI EP SSWP DUP S-FLG ---- ---- MP51315
MP34138 FM8PMP B:PED 5.0SI T-21 EPDM SSWP DUP ---- ---- MP51315
MP33695 FM8PMP B:PED 5.0SSI SSWP ---- ---- MP51315
MP26858 FM8PMP B:PED/CL .50 SAE 5.0 RD ---- ---- MP51315
MP24550 FM8PMP B:PED/CL 5.0 ---- ---- MP51315
MP29726 FM8PPK A:7/8 SL CC MTR 4.63CAI MP51310 ---- ----
MP39967 FM8PPK A:CCMTR 5/8FA 4.62 MP51310 ---- ----
MP26266 FM8PPK A:CCMTR 7/8 FA 5.0 MP51310 ---- ----
MP21325 FM8PPK A:PEM 3/4 5.0 MP51310 ---- ----
MP21330 FM8PPK A:PEM 3/4 5.0 BCF MP51310 ---- ----
MP30040 FM8PPK A:PEM 3/4 5.0 CI FLANGE MP51310 ---- ----
MP39032 FM8PPK A:PEM 3/4 5.0HF-SI MP51310 ---- ----
DIMENSIONAL DATA
FM8 BZ CC
9.16
12.79
.38
3.00 3.25
8.50
2" NPT
DISCHARGE
1.50 7.84
3.63
10.15
6.06
4.17
.45
1/4" NPT
PIPE PLUG
2" NPT
SUCTION
1.26
5.50
2.74
4.50
(4)
.344
HOLES
3.450
4.506
4.502
45° TYP.
(4)
.438 THRU HOLES
EQ. SPACED AS SHOWN
ON A
5.875 B.C.
Figure 16

Page 20 of 24 FLOMAX 8 BZ AL (en)
FM8 BZ PED
6.25
12.79
8.50
3.253.00
9.16
1/2"
PIPE PLUG
1.504.69
6.06
14.60
3.63
4.561.56
4.17
1.79
.750
.749
2" NPT
DISCHARGE
2" NPT
SUCTION
1/4" NPT
PIPE PLUG
(4)
.41
HOLES
5.00
6.00
2.44
Figure 17
FM8 BZ CLUTCH
6.25
12.79
8.50
3.253.00
9.16
1/2"
PIPE PLUG
1.50
4.17
4.56
16.61
6.06
3.63
4.69
.75
2" NPT
DISCHARGE
2" NPT
SUCTION
1/4"
PIPE PLUG
1.56
2.44
5.006.00
.41
(4) HOLES
Figure 18