Berkeley BVM2-30, BVM2-40, BVM2-60, BVM2-50, BVM2-80 Owner's Manual

OWNER’S MANUAL

INSTALLATION AND OPERATING INSTRUCTIONS

VERTICAL MULTISTAGE PUMPS

Single and Three Phase 60 Cycle

Record the following information from the motor and pump
nameplates for future reference:

Pump Model No.

Bill of Material No.

Motor Model No.

Motor Serial No.

H.P. Volts/Hz/Ph

Rated Amp Draw

United States

Berkeley Pumps, 293 Wright St., Delavan, WI 53115

WICOR Canada Co.

1800 Courtney Park Drive East, Unit 5-7, Mississauga, Ontario, L5T 1W1

Printed in U.S.A. BE473 (Rev. 10/10/02)

TABLE OF CONTENTS

Safety Instructions..............................................................2

Applications and Operating Ranges................................2-4

Installation......................................................................4-5

Electrical.........................................................................5-6

Operation.......................................................................6-7

Maintenance ................................................................8-11

Repair Parts ................................................................12-13

Troubleshooting Guide....................................................14

Warranty .........................................................................14

Carefully read and follow all safety instructions
in this manual or on pump.

This is the safety-alert. When you see this symbol on

your pump or in this manual, look for one of the
following signal words and be alert to the potential for
personal injury.

warns about hazards that will cause serious

personal injury, death or major property damage if ignored.

warns about hazards that can cause serious

personal injury, death or major property damage if ignored.

warns about hazards that will or can cause

minor personal injury or property damage if ignored.

The word NOTICE indicates special instructions which are
important but not related to hazards.

To avoid serious or fatal personal injury and possible
property damage, carefully read and follow the safety
instructions.

1. Install pump according to all code requirements.

2. Compare pump nameplate data with desired operating

range.

3. Pump only liquids compatible with pump component

materials (that is, liquids that will not attack the pump).

4. Make sure plumbing is adequate to handle system

pressure.

5. Periodically perform maintenance inspection on pump

and system components.

6. Wear safety glasses at all times when working on

pumps.

INSPECT THE SHIPMENT

The vertical multistage centrifugal inline pump has been
carefully inspected and packaged to assure safe delivery.
Inspect the pump and fittings and report to the carrier any
items which are damaged or missing.

CONFIRM THAT YOU
HAVE THE RIGHT PUMP

APPLICATIONS AND
OPERATING RANGES

Berkeley multistage in-line centrifugal pumps are designed
for liquid transfer, circulation, and pressure boosting of hot
or cold clean water or other thin, non-explosive liquids, not
containing solid particles or fibers, which will not
chemically attack the pump materials.

Typical applications include:

• Municipal water supply and pressure boosting

• Boiler feed and condensate systems

• Cooling water systems

• Irrigation

• Fire fighting

Maximum Ambient Temperature....................104° F(40° C)

Liquid Temperature Range .............................5° F to 250° F

(-15° C to +121° C)

Maximum Permissible

Operating Pressure Curves................................See Figure 4

Maximum Inlet Pressure: ....... Table II shows the maximum

permissible inlet pressure. However,

the actual inlet pressure plus the pressure

when the pump is running against a closed

valve must always be lower than the

“Maximum Permissible Operating Pressure”.

Electrical Data: ..................................See Motor Nameplate

Dimensions and Port to

Port Lengths : ...................................See Figures 2A, 2B, 3A

and 3B, Pages 3 and 4

2

FIGURE 1 - Model Plate Information

BVM_2-30/2

Berkeley Vertical
Multistage Pump

Material Code (SS only)
I = all wetted surfaces 304SS;
X = all wetted surfaces 316SS

Nominal flow rate in m3/hr
(multiply by 4.4 to get GPM)

Number of stages (÷ 10)
Number of impellers - only used if pump

has fewer impellers than chambers (stages)

MODEL #

GPM

HP

BERKELEY PUMPS, GRAND ISLAND, NE 68801

PART #

FEET

PRESS.
MAX (PSI)

MFG. DATE

RPM

TEMP. MAX (F)

3

Allow Space

FIGURE 2A - Height, width and baseplate dimensions for BVM2
and BVM4 Series pumps

FIGURE 2B - Height, width, and baseplate dimensions for BVM8
and BVM16 Series pumps

Model

Dimension in Inches

Number A B C D E F

BVM2-30/2 11-3/8 9-1/4 4-7/8 2 22-5/8 6

BVM2-30 11-3/8 9-7/8 4-7/8 2 23-1/4 6

BVM2-40 12 11-1/8 5-1/4 2 25-1/4 7-1/8

BVM2-50 12-3/4 11-1/8 5-3/4 2-1/8 26 7-1/4

BVM2-60 13-1/2 11-1/8 5-3/4 2-1/8 26-5/8 7-1/4

BVM2-70 14-1/8 12-1/8 5-3/4 2-1/8 28-1/4 7-1/4

BVM2-80 14-7/8 12-1/8 5-3/4 2-1/8 29 7-1/4

BVM2-100 16-5/8 13-5/8 2-7/8 2-7/8 33-1/4 8-1/2

BVM2-120 18-1/8 13-5/8 6-7/8 2-7/8 34-5/8 8-1/2

BVM2-150 20-1/4 15-1/4 8 3-3/8 38-7/8 10-5/8

BVM2-180 22-3/8 15-1/4 8 3-3/8 41 10-5/8

BVM4-20/1 11-3/8 9-1/4 4-7/8 2 22-5/8 6

BVM4-20 11-3/8 9-7/8 4-7/8 2 23-1/4 6

BVM4-30 12-3/8 11-1/8 5-1/4 2 25-5/8 7-1/8

BVM4-40 13-1/2 11-1/8 5-3/4 2-1/8 26-5/8 7-1/4

BVM4-50 14-1/2 12 5-3/4 2-1/8 28-5/8 7-1/4

BVM4-60 16 13-5/8 6-7/8 2-7/8 32-1/2 8-1/2

BVM4-80/7 18-1/8 13-5/8 6-7/8 2-7/8 34-5/8 8-1/2

BVM4-80 18-1/8 13-5/8 6-7/8 2-7/8 34-5/8 8-1/2

BVM4-100 20-1/4 15-1/4 8 3-3/8 38-7/8 10-5/8

BVM4-120 22-3/8 15-1/4 8 3-3/8 41 10-5/8

BVM4-140 24-1/2 15-1/4 8 3-3/8 43-1/8 10-5/8

BVM4-160 26-5/8 15-1/4 8 3-3/8 45-1/4 10-5/8

BVM8-20/1 15 9-7/8 4-7/8 2 27 6

BVM8-20 15 11-1/8 5-3/4 2-1/8 28-1/4 7-1/4

BVM8-30 17-3/4 13-5/8 6-7/8 2-7/8 34-1/4 8-1/2

BVM8-40 18-7/8 13-5/8 6-7/8 2-7/8 35-1/2 8-1/2

BVM8-50 20-1/8 15-1/4 8 3-3/8 38-3/4 10-5/8

BVM8-60 21-1/4 15-1/4 8 3-3/8 40 10-5/8

BVM8-80 23-5/8 15-1/4 8 3-3/8 42-1/4 10-5/8

BVM8-100 26 15-1/4 8 3-3/8 44-5/8 10-5/8

BVM8-120 28-3/8 16-1/2 8-3/4 3-3/8 48-1/4 10-5/8

BVM8-140 30-3/4 16-3/8 8-3/4 3-3/8 50-1/2 10-5/8

BVM8-160 33-5/8 19-5/8 9-1/2 4-1/4 57-1/2 13

BVM16-30/2 19-1/2 15-1/4 8 3-3/8 38-1/4 10-5/8

BVM16-30 19-1/2 15-1/4 8 3-3/8 38-1/4 10-5/8

BVM16-40 21-3/8 15-1/4 8 3-3/8 40 10-5/8

BVM16-50 23-1/8 16-3/8 8-3/4 3-3/8 42-7/8 10-5/8

BVM16-60 25-3/8 19-5/8 9-1/2 4-1/4 49-1/4 13

BVM16-70 27-1/8 19-5/8 9-1/2 4-1/4 51 13

BVM16-80 28-7/8 19-5/8 9-1/2 4-1/4 52-7/8 13

BVM16-100 32 21-3/4 9-1/8 4 57-3/4 11-1/2

BVM16-120 35-3/8 21-3/4 9-1/2 3-1/4 60-3/8 13

TABLE I – Maximum Height and Width Dimensions*

* Measurements represent the largest number possible for each Model.

to Remove

D

B

F F

C

Motor

3/4" NPT

C

D

B

Vent Plug

1/4" NPT
Gauge Tap

E

A

ANSI 250 lb
1-1/4" Flange

1-1/4"

1/4" NPT
Gauge Tap

E

A

NPT

3"

10"

3-15/16"

8-1/4"

3365 0199

8-1/4"

9-7/8"

3-15/16"

7-1/16"

1/2" Dia. – 4 Places

Allow Space

D

B

F F

E

A

11-13/16"

C

1/4" NPT
Gauge Tap

to Remove
Motor

3/4" NPT
Vent Plug

ANSI 250 lb
2" Flange

2" NPT

3-1/2"

12-5/64"

5-1/8"5-1/8"

C

1/4" NPT
Gauge Tap

D

B

E

A

9-3/4"

17/32" Dia. – 4 Places

8-1/2"

9-3/4"

3364 0199

4

Allow Space

FIGURE 3A - Height, width and baseplate dimensions for
BVMI/X2 and BVMI/X4 Series pumps

FIGURE 3B - Height, width, and baseplate dimensions for
BVMI/X8 and BVMI/X16 Series pumps

Model

Dimension in Inches

Number A B C D E F

BVMI/X2-30/2 11-3/4 9-1/4 4-7/8 2 23 6

BVMI/X2-30 11-3/4 9-7/8 4-7/8 2 23-5/8 6

BVMI/X2-40 12-3/8 11-1/8 5-1/4 2 25-5/8 7-1/8

BVMI/X2-50 13-1/8 11-1/8 5-3/4 2-1/8 26-3/8 7-1/4

BVMI/X2-60 13-7/8 11-1/8 5-3/4 2-1/8 27 7-1/4

BVMI/X2-70 14-1/2 12-1/8 5-3/4 2-1/8 28-5/8 7-1/4

BVMI/X2-80 15-1/4 12-1/8 5-3/4 2-1/8 29-3/8 7-1/4

BVMI/X2-100 17 13-5/8 2-7/8 2-7/8 33-5/8 8-1/2

BVMI/X2-120 18-1/2 13-5/8 6-7/8 2-7/8 35 8-1/2

BVMI/X2-150 20-5/8 15-1/4 8 3-3/8 39-1/4 10-5/8

BVMI/X2-180 22-3/4 15-1/4 8 3-3/8 41-3/8 10-5/8

BVMI/X4-20/1 11-3/4 9-1/4 4-7/8 2 23 6

BVMI/X4-20 11-3/4 9-7/8 4-7/8 2 23-5/8 6

BVMI/X4-30 12-3/4 11-1/8 5-1/4 2 26 7-1/8

BVMI/X4-40 13-7/8 11-1/8 5-3/4 2-1/8 27 7-1/4

BVMI/X4-50 14-7/8 12 5-3/4 2-1/8 29 7-1/4

BVMI/X4-60 16-3/8 13-5/8 6-7/8 2-7/8 32-7/8 8-1/2

BVMI/X4-80/7 18-1/2 13-5/8 6-7/8 2-7/8 35 8-1/2

BVMI/X4-80 18-1/2 13-5/8 6-7/8 2-7/8 35 8-1/2

BVMI/X4-100 20-5/8 15-1/4 8 3-3/8 39-1/4 10-5/8

BVMI/X4-120 22-3/4 15-1/4 8 3-3/8 41-3/8 10-5/8

BVMI/X4-140 24-7/8 15-1/4 8 3-3/8 43-1/2 10-5/8

BVMI/X4-160 27 15-1/4 8 3-3/8 45-3/8 10-5/8

BVMI/X8-20/1 15 9-7/8 4-7/8 2 27 6

BVMI/X8-20 15 11-1/8 5-3/4 2-1/8 28-1/4 7-1/4

BVMI/X8-30 17-3/4 13-5/8 6-7/8 2-7/8 34-1/4 8-1/2

BVMI/X8-40 18-7/8 13-5/8 6-7/8 2-7/8 35-1/2 8-1/2

BVMI/X8-50 20-1/8 15-1/4 8 3-3/8 38-3/4 10-5/8

BVMI/X8-60 21-1/4 15-1/4 8 3-3/8 40 10-5/8

BVMI/X8-80 23-5/8 15-1/4 8 3-3/8 42-1/4 10-5/8

BVMI/X8-100 26 15-1/4 8 3-3/8 44-5/8 10-5/8

BVMI/X8-120 28-3/8 16-1/2 8-3/4 3-3/8 48-1/4 10-5/8

BVMI/X8-140 30-3/4 16-3/8 8-3/4 3-3/8 50-1/2 10-5/8

BVMI/X8-160 33-5/8 19-5/8 9-1/2 4-1/4 57-1/2 13

BVMI/X16-30/2 19-1/2 15-1/4 8 3-3/8 38-1/4 10-5/8

BVMI/X16-30 19-1/2 15-1/4 8 3-3/8 38-1/4 10-5/8

BVMI/X16-40 21-3/8 15-1/4 8 3-3/8 40 10-5/8

BVMI/X16-50 23-1/8 16-3/8 8-3/4 3-3/8 42-7/8 10-5/8

BVMI/X16-60 25-3/8 19-5/8 9-1/2 4-1/4 49-1/4 13

BVMI/X16-70 27-1/8 19-5/8 9-1/2 4-1/4 51 13

BVMI/X16-80 28-7/8 19-5/8 9-1/2 4-1/4 52-7/8 13

BVMI/X16-100 32 21-3/4 9-1/8 4 57-3/4 11-1/2

BVMI/X16-120 35-3/8 21-3/4 9-1/2 3-1/4 60-3/8 13

TABLE II – Maximum Height and Width Dimensions*

* Measurements represent the largest number possible for each Model.
NOTE: BVMI models are 304 stainless steel; BVMX models are 316

stainless steel.

to Remove

D

B

F

Motor

C

C

F

Vent Plug

behind

Coupling Guard

E

A

ANSI 250 lb
1-1/4" Flange

1-1/4"
Victaulic

3"

8-1/4"

3-15/16"

4176 0502

8-3/16"

9-7/8"

3-15/16"

7-3/32"

17/32" Dia. – 4 Places

Allow Space

D

B

F F

E

A

C

to Remove
Motor

3/4" NPT
Vent Plug

ANSI 250 lb
2" Flange

2" Victaulic

3-1/2"

C

D

B

A

8-3/16"

D

B

E

A

E

9-5/8"

11-13/16"

8-1/2"

17/32" Dia. – 4 Places

10-1/4"

5-1/8"5-1/8"

9-5/8"

4175 0502

5

INSTALLATION

Hazardous voltage. Voltage can shock, burn,

or cause death. Ground pump motor correctly before

connecting to power supply, per article 250-80 of the
National Electrical Code (NEC) in the U.S., or the Canadian
Electrical Code (CEC), as applicable.

Location

Locate pump in a dry, well ventilated area, not subject to
freezing or extreme variations in temperature.

Mount pump a minimum of 6” from any obstruction or hot
surface. Install the pump with the motor shaft vertical.
Make sure that an adequate supply of cool air reaches the
motor cooling fan. Maximum ambient air temperature is
104° F (40° C).

For open systems requiring suction lift, locate the pump as
close to the water source as possible.

Foundation

Foundation should be concrete or a similarly rigid
foundation to provide a secure, stable mounting base for
the pump.

Secure pump to foundation using all bolt holes. Refer to
Figures 2 and 3 for bolt plate dimensions. Be sure that all
four pads on the base are properly supported.

Shim pump base to make sure that pump is level.

Piping

Explosion and burn hazard. Do not run
pump with discharge valve closed; the water in the pump
may boil, with risk of explosion and steam burns to
anyone near. If there is any danger of the pump running

against a closed discharge valve, install a pressure relief or
by-pass valve in the discharge pipe to allow for minimum
liquid flow through the pump. Minimum liquid flow
through the pump is needed for cooling and lubrication of
the pump (See Table IV). Run the bypass/relief valve and
discharge pipe to a floor drain or a tank for collection.

Suction pipe should be adequately sized (See Table V) and
run as straight and as short as possible to keep friction
losses to a minimum. Pipes, valves, and fittings must have a
pressure rating equal to or greater than the maximum
system pressure.

Pressure check the discharge piping as required by codes
or local regulations.

“Inlet” and “Outlet” are marked on the pump base to show
the direction of the liquid flow through the pump.

Install anti-vibration mountings on either side of the pump
if a minimum noise level is desired.

Liquid Temperature

Type +5° F to +250° F

BVM2 1 GPM

BVM4 2 GPM

BVM8 4 GPM

BVM16 8 GPM

TABLE IV – Minimum Pumping Rates

Type Pipe Size

BVM2 1-1/4” Nominal Diameter, Schedule 40 Pipe

BVM4 1-1/4” Nominal Diameter, Schedule 40 Pipe

BVM8 2” Nominal Diameter, Schedule 40 Pipe

BVM16 2” Nominal Diameter, Schedule 40 Pipe

TABLE V – Minimum Suction Pipe Sizes

FIGURE 4 - Maximum Inlet Pressure and Maximum Permissible
Operating Pressure Curves

0

30

60

90

120

150

180

210

240

270

300

330

360

390

420

212

0 to100 120 140 160 180 200 220 240

250

260

280

Pressure in PSI

Temperature in Degrees F

3355 1298

Curve 2

Curve 1

Curve 1 Curve 2

BVM2-30/2 to BVM2-120 BVM2-150 to BVM2-180

BVM4-20/1 to BVM4-120 BVM4-140 to BVM4-160

BVM8-20/1 to BVM8-120 BVM8-140 to BVM8-160

BVM16-30/2 to BVM16-80 BVM16-100 to BVM16-120

TABLE III – Permissible Operating Pressure Curves

Maximum Inlet

Model Number Pressure (PSI)

BVM2

30/2 - 60 145
70 - 180 220
20/1 - 20 90

BVM4 30 - 80/7 145

80 - 160 220

BVM8

20/1 - 40 90
50 - 160 145

BVM16

30/2 - 30 90
40 - 120 145

6

Install isolation valves in both inlet and outlet pipes near
the pump (see Figure 5). This allows for removal of pump
for service without draining the system and isolation of the
pump in case of a flooded suction condition.

If the system pressure is greater than the pumps maximum
inlet pressure the limits of the pump can be exceeded if the
discharge pressure backs up to the inlet side of the pump.
Installation of a check valve in the discharge pipe is
recommended to prevent this condition.

Make sure, especially on the inlet side of the pump, that
there are no airlocks in the system. See Figure 6 for correct
pipe work to avoid airlocks. The suction pipe should be
level or slightly rising.

Support all piping independently of the pump so the weight
of the piping system does not strain the pump case. Make
sure that the expansion and contraction of the piping
system from temperature variations cannot put a strain on
the pump.

If the system or pump must be drained periodically
(especially if the discharge pipe is horizontal or slopes
downward away from the pump), install a loop and
vacuum valve as shown in Figure 7 to protect the pump
against running dry. The highest point of the loop should
be at least as high as the lowest point of the motor. This
loop/valve combination will allow the pump and the
system to be drained independently of one another.

ELECTRICAL

Hazardous voltage. Can shock, burn or

cause death. All electrical work should be performed by a

qualified electrician in accordance with the National
Electrical Code and all local codes and regulations. Make
sure that the motor voltage, phase, and frequency match
the incoming electrical supply. The proper operating
voltage and other electrical information can be found on
the motor nameplate. These motors are designed to run up
to ±10% of the nameplate-rated voltage. The wiring
connection diagram can be found on either a plate
attached to the motor or on a diagram inside the terminal
box cover.

• If voltage variations are greater than ±10% do not

operate the pump.

• Incorrect voltage can cause fire or serious damage to the
motor and voids warranty.

• Ground the pump motor correctly before connecting it
to the power supply.

• Follow the wiring instructions when connecting the
motor to the power lines.

Position of Terminal Box

To turn the motor so that the terminal box faces the right
direction, proceed as follows:

1. Disconnect the power to the pump motor.

FIGURE 6 - Install Pipe Correctly to Prevent Air Locks

FIGURE 7 - Loop and Vacuum Valve Installation

FIGURE 5 - Bypass required if pump might operate with
discharge valve closed. See Table IV for minimum required flow
through pump to prevent overheating and to ensure lubrication.

Inlet

Outlet

Nipple
Orifice

Bypass Line

12" Min.

to prevent

erosion

Isolation Valves

Vacuum Valve

3346 1198

O.K.

O.K.

3347 1198

7

2. Remove the coupling guards (use a screwdriver).

3. Remove the couplings.

4. Remove the bolts that fasten the motor to the pump.

5. Turn the motor to the required position (in quarter-turn
increments).

6. Follow steps 10 - 20 under “Motor Replacement”, on
Page 9.

Field Wiring

All wiring connections and wiring sizes must meet National
Electrical Code and local requirements.

Motor Protection

See the motor nameplate for electrical connection/wiring
diagram.

Berkeley pumps must be used with the proper size and type
of motor starter to ensure protection against damage from
low voltage, phase failure, current imbalances, and
overloads. The overload should be sized to trip at the full­load current rating of the motor.

OPERATION

Priming

Hazardous pressure. Do not run the pump

with the discharge valve closed; the water in the pump may
boil, causing risk of explosion and steam burns to anyone
nearby.

Hazardous voltage. Disconnect all power to

the pump before servicing or working on the pump. Make
sure that the power is locked out and that the pump cannot
be accidentally started.

NOTICE: Under no circumstances should the pump be
operated without flow through the pump. Never operate
the pump dry.

Operation of closed systems or open systems with the
liquid level above the pump priming plug:

1. Close the discharge isolating valve and loosen the
needle valve located in the assembly in the pump head
(Figure 8). Do not remove the needle valve.

NOTICE: On BVMI(X)2/4 models, remove the coupling
guard for access to the vent plug.

Risk of water damage and injury. Watch the
direction of the priming plug and make sure that the liquid
escaping from it does not injure persons nearby or damage
the motor or other components. In hot water installations,
pay particular attention to the risk of injury from scalding
hot water.

2. Slowly open the isolation valve in the suction pipe until

a steady stream of liquid runs out the vent in the priming
port.

3. Tighten needle valve to 25 inch-pounds. Completely open

isolation valves.

NOTICE: Please turn to “Starting”, Page 8, before
proceeding any further.

Operation of open systems with the liquid level below the
top of the pump:

NOTICE: The suction pipe requires a check valve or

isolation valve.

1. Close the discharge isolation valve.

2. Remove the vented priming plug.

3. Pour liquid through the priming port until the suction

pipe and the pump are completely filled with liquid.

4. Replace the vented priming plug and tighten it securely.

5. Repeat steps 1-4 until the pump is primed.

NOTICE: Please turn to “Starting”, Page 8, before
proceeding any further.

Checking Direction of Rotation

NOTICE: Do not disconnect the motor from the shaft to

check the direction of rotation. If you remove the coupling,
then you must adjust the shaft position when you reinstall
it. This must be done before starting the pump.

Arrows on the pump head show the correct direction of
rotation. When seen from the motor fan, the pump should
rotate counterclockwise (). For pump motors without a
fan remove one of the coupling guards and look at the
coupling to determine the direction of rotation. Turn off the
pump and replace coupling guard.

NOTICE: Do not check the direction of rotation until the
pump has been filled with liquid. See “Priming”, at left and
above.

1. Switch power off.

2. Remove the coupling guard and rotate the pump shaft to

be certain it can turn freely. Replace the coupling guard.

3. Verify that the electrical connections are in accordance

with the wiring diagram on the motor.

4. If the fan is visible, turn on and off to verify rotation.

5. To reverse the direction of rotation, first switch OFF the

power supply.

FIGURE 8 - Priming and Drain Plugs

Vented
Priming
Plug

Drain
Plug

Back off needle valve
to vent air. Retighten
to 25 in.-lbs. when vent
port runs a steady stream
of water.

6. On three-phase motors, switch 2 of the 3 power leads
on the load side of the starter. On single-phase motors,
see the connection diagram on the motor nameplate.
Change the wiring as indicated.

Hazardous voltage. Voltage can shock, burn

or cause death. Ground the pump motor correctly before
connecting to power supply per article 250-80 of National
Electrical Code (NEC) in the U.S., or the Canadian
Electrical Code (CEC), as applicable.

7. Switch on the power supply and recheck the direction of
motor rotation.

Starting

1. If a suction line isolation valve has been installed, check
to be sure that it is completely opened.

2. For initial starting, the isolation valve in the discharge
pipe should be almost closed.

3. Start the pump.

4. When the piping system has been filled with liquid,
slowly open the discharge isolation valve until it is
completely open. Opening the valve too fast may result
in water hammer in the discharge pipe. If the pump or
system start to rattle, the pump is cavitating; to avoid
damage to the pump, reduce the flow through the
discharge isolation valve until the rattling stops. If this
does not give adequate flow for your installation, call
your installer or system designer.

5. Record the voltage and amperage of the motor. Adjust
the motor overloads if required.

6. If pressure gauges have been installed, check and record
operating pressures.

7. Check all controls for proper operation.

Motor Bearings

For the greasing schedule and greasing procedure of the
motor bearings follow the motor manufacturers
recommendations.

Calculating Minimum Inlet Pressure:

Minimum inlet pressure is required to avoid cavitation in
the pump and is calculated as follows:

H = Pb - NPSHR - Hf- Hv- H

s

H = Minimum Inlet Pressure in Feet of Head
Pb = Barometric Pressure in Feet
1 Bar = 29.53 inches of Mercury (Hg)
1 PSI = 2.31 Ft of Head
1 Bar = 33.5 Ft. of Head
NPSHR = Net Positive suction head required. To be read

from the NPSHR curve, Figure 9, at the highest flow the
pump will be delivering.

Hf= Friction Loss in suction pipe in ft of head
Hv= Vapor pressure in feet of head (See Table VI).
Hs= A safety margin of 1.64 ft of head

Example for BVM8:

If: Flow = 60 GPM

Pb = 1 Bar = 29.53 Inches of Mercury*
(Convert from Bar to Feet of Head)

1 Inch of mercury = 1.13’ feet of water
T = 100° F
NPSHR = 10’ (See Figure 9)
Hf= 10’ of 2” Steel Pipe @ 11.9’ of loss per 100’

of Pipe (Hf= 11.9’/10’ = 1.19’)

Hv= 2.195’ (from Table VI)

Hs= 1.64’ (safety factor from above)

Then: H = 33.5’* - NPSHR** - Hf- Hv- H

s
H = 33.5’ - 10’ - 1.19’ - 2.195’ - 1.64 = 18.475’
H = 18.475’ = Minimum Inlet Pressure

* 1 Bar = 14.5 PSI x 2.31 Ft of Head = 33.5’

8

FIGURE 9 - BVM2 through BVM16
Net Positive Suction Head Requirement (NPSHR)

Temperature Vapor Pressure Absolute Pressure

in °F (°C) in PSIA (kPa) in Feet (M) of Water

32 (0) 0.089 (.61) 0.205 (.062)

40 (4.4) 0.122 (.84) 0.281 (.086)

60 (15.6) 0.256 (1.77) 0.592 (.180)

80 (26.7) 0.507 (3.50) 1.172 (.358)

100 (37.8) 0.95 (6.55) 2.195 (.669)

120 (48.9) 1.695 (11.69) 3.914 (1.193)

140 (60.0) 2.892 (19.94) 6.681 (2.036)

160 (71.1) 4.745 (32.72) 10.961 (3.341)

180 (82.2) 7.515 (51.84) 17.36 (5.291)

200 (93.3) 11.529 (79.49) 26.632 (8.117)

210 (98.9) 14.125 (97.39) 32.629 (9.945)
212 (100) 14.698 (101.34) 33.952 (10.349)

220 (104.4) 17.188 (118.51) 39.704 (12.102)

230 (110.0) 20.78 (143.28) 48.002 (14.631)

240 (115.6) 24.97 (172.17) 57.681 (17.581)

248 (120.0) 28.79 (188.51) 66.505 (20.271)

TABLE VI – Vapor Pressure of Water

30

25

BVM 2

20

15

NPSHR in Feet

10

5

0102030405060708090100 110 120

BVM 4

BVM 8

Flow in GPM

BVM 16

MAINTENANCE

Motor Replacement

For Key Numbers, refer to the Exploded View, Figure 14,
Page 14 for BVM2 and BVM4 Series Models, Figure 16,
Page 16 for BVMI/X2 and BVMI/X4 Models, Figure 15,
Page 15 for BVM8 and BVM16 Series Models, and Figure
17, Page 17 for BVMI/X8 and BVMI/X16 Series Models.

Hazardous voltage. Disconnect all power to

the pump before servicing or working on pump. Make sure
that power is locked out and that pump cannot be
accidentally started.

1. Disconnect the power to the pump motor.

2. Close the nearest suction and discharge valves.

3. Remove the coupling guards (Key No. 4) by prying
them loose with a screw driver.

4. Remove the socket head screws (Key No. 3) and the
coupling halves (Key No. 2) from the shaft (Key No.
16A). For additional reference, see Figure 12, Page 10.

NOTICE: Socket head screws are metric. See Table VIII
on Page 12 for specific metric driver sizes.

5. Remove the shaft pin (Key No. 5).

6. Remove the capscrews (Key No. 12), flatwashers (Key
No.10), and lockwashers (Key No.11) that hold the
motor (Key No. 1) and the motor bracket (Key No. 7)
together.

7. Pull the old motor up and off of the motor bracket.
NOTICE: Note the location of the conduit box on the
motor.

8. Thoroughly clean the surfaces of the mounting flanges
on the new motor and the pump end.

9. Install the new motor on the pump with the conduit
box in the desired position.

10. Lubricate the capscrews (Key No. 12) with oil.

11. Reinstall the lockwashers, flatwashers, and capscrews
that hold the motor and the motor bracket together,
then tighten evenly and diagonally. See Table VIII,
Page 12 for torque specifications.

12. Reinstall the shaft pin (Key No. 5) in the shaft.

13. Reinstall the coupling halves (Key No. 2) on the pump
and motor shaft. Make sure to engage the shaft pin (Key
No. 5).

NOTICE: Be sure coupling surfaces are thoroughly
clean prior to assembly.

14. Snug up the socket head screws (Key No. 3) until the
coupling begins to bind and then loosen 1/2 turn.

15. Draw up the capscrews evenly so the gap between the
coupling halves is equal on both sides (See Figure
10A).

16. Insert a screw driver under the coupling (See Figure
10B).

17. Raise the pump shaft to its highest point.

18. Lower the shaft halfway back down the distance you
just raised it and retighten the capscrews. See Figure

10.

NOTICE: Torque settings are critical to prevent
coupling movement. Refer to Table VIII, Page 12 for
torque specifications.

19. Rotate the shaft to make sure that there is no inter­ference. If rubbing is noted repeat steps 16, 17, and 18
above and readjust pump shaft height.

20. Reinstall the coupling guards by snapping them into
place.

NOTICE: The guards should be in place before the unit
is run.

21. Open the suction and discharge valves. Turn the power
back on.

9

FIGURE 10A - Make Sure that the Coupling Halves are Evenly
Tightened

FIGURE 10B - Vertically (axial) Centering the Coupling

Raise Coupling
as far as it will go;
then tighten at
one-half the
height of total
axial play.

Coupling
Setting

Axial
Play

3359 1298

Motor

Pump

Replacing Pump Stack

For Key Numbers, refer to the Exploded View, Figure 14 on
Page 14, for the BVM2 and BVM4 Series Models and
Figure 15 on Page 15 for BVM8 and BVM16 Series Models.

Hazardous pressure. Do not run pump with

discharge valve closed; the water in the pump may boil,
causing risk of explosion and steam burns to anyone
nearby.

1. Follow steps 1-8 under “Motor Replacement” section
on Page 9; then proceed with step 2 below.

2. Remove the four staybolt nuts, flatwashers, and
lockwashers (Key Nos. 8, 9A, and 9B) from the
staybolts (Key No. 19).

NOTICE: It is not necessary to remove the staybolts
when replacing the stack.

3. Lift the motor bracket (Key No. 7) off of the pump
body.

NOTICE: Note the position of the priming plug. The
priming plug must be returned to its original position
during reassembly.

4. Remove and discard upper sleeve gasket (Key No. 17).

5. Clean gasket seat.

6. Remove and replace round spring ring (BVM2 and
BVM4) or stack spring (BVM8 and BVM16) (Key No.

13).

7. Pull the old stack (16A through 16L) out of the stainless
steel sleeve (Key No. 18) by pulling straight up on the
pump shaft (Key No. 16A).

8. Remove the stainless steel sleeve (Key No. 18).

9. Remove and discard the bottom sleeve gasket (Key No.

17).

10. Clean the gasket seat.

11. Remove and discard the O-Ring (Key No. 21A) from
the suction/discharge (Key No. 21 BVM2 and BVM4
only).

12. Cast Iron Models Only: Clean the O-Ring seat and
install a new O-Ring (Key No. 21A).

13. Install a new lower sleeve gasket.

14. Install the new stack without the stainless steel sleeve.

NOTICE: Be sure to align either the small priming hole
or the suction interconnector pin hole (located on the
bottom stage of the stack) properly in the base of the
Suction/Discharge (Key No. 21). See Figure 11 (not
necessary on BVMI/X models).

15. Use a rubber mallet to tap the stainless steel sleeve
(Key No. 18) into place.

16. Install a new mechanical shaft seal (Key Nos. 14A and
14B, or Key Nos 15A through 15G). Refer to
“Mechanical Seal Disassembly and Mechanical Seal
Reassembly” sections, Pages 11 and 12.

17. Install a new upper sleeve gasket (Key No. 17).

18. Install a new round spring ring or stack spring (Key No.

13).

19. Reinstall the motor bracket (Key No. 7) on the pump
body. Align the priming plug (Key No. 6) to its original
position.

20. Oil the threads on the staybolts (Key No. 19).

21. Replace the lockwashers, flatwashers, and staybolt nuts
(Key Nos. 8, 9A and 9B) and cross-torque the staybolts.
See Table VIII, Page 12, for torque specifications.

22. Reinstall the motor (Key No. 1) on the motor bracket
(Key No. 7) and turn the motor to the desired terminal
box position.

23. Follow steps 10 - 21 under “Motor Replacement”, Page

9. You have now finished changing out the impeller
stack.

10

FIGURE 12 - Remove the Socket Head Screws and the Coupling
Halves

FIGURE 11 - BVM2, BVM4 – Align Small Priming Port. BVM8,
BVM16 – Align Interconnector Pin. No alignment is necessary
on BVMI/X models.

Suction

Priming
Hole

Interconnector

Housing
Knob

Suction/Discharge

3358 1298

Interconnector
Pin

Two Part Mechanical Seal/Disassembly:

See Table VII to determine which seal your model has.

See Figures 14 and 15 for Key Numbers.

NOTICE: The assembly and disassembly procedure for this
seal does not require extraordinary force.

Hazardous voltage. Can Shock, burn or
cause death. Disconnect power to pump before
disassembly.

1. Follow Steps 1-8 under “Motor Replacement” Page 9,

and proceed with step 2 below.

2. Remove the four nuts, lockwashers, and washers (Key

Nos. 8, 9A, and 9B) from the staybolts (Key No. 19).

3. The shaft seal consists of a stationary half (Key No.

14A) and a rotating half (Key No. 14B). Turn the motor
bracket upside down and remove the stationary part of
the seal (Key No. 14B) from the seal seat in the base of
the motor bracket.

NOTICE: Use care not to chip or scratch the seal seat
during disassembly and assembly.

4. Clean the seal seat with a wet cloth.

5. Remove and discard the rotating parts of the seal by

twisting and pulling up on them until they come off of
the shaft.

Two Part Mechanical Seal Reassembly:

NOTICE: Before assembly check and clean all sealing and

gasket surfaces with a clean wet cloth. Replace all seals,
gaskets and O-Rings.

1. Turn the motor bracket upside down.

2. Moisten the seal seat (in the motor bracket) and the

O-ring (cup seal) portion of the stationary half of the
mechanical seal (Key No. 14A) with a small amount of
water.

3. Press the cup-seal onto the stationary half of the shaft

seal and then press the shaft seal into the seal seat of
the pump head (Cup-seal portion first), using finger
pressure only. NOTICE: If a tool is used, protect the
seal face from tool with a clean cloth.

NOTICE: The cup-seal must be placed evenly on the
seal and the seal must be installed evenly in the seal
seat to avoid pinching the cup-seal.

4. Moisten the internal parts of the rotating portion of the
mechanical seal (14B).

5. Install the rotating half of the seal onto the shaft. Push
and twist the seal onto the shaft to the stop ring.

NOTICE: Use care when installing the new seal on the
shaft. Do not scratch or mar seal on the shaft shoulder.

6. Follow Steps 11 - 23 under “Replacing Pump Stack”,
Page 10.

Seven Part Mechanical Seal/Disassembly:

See Figures 14 and 15 for Key Numbers.

Hazardous voltage. Can Shock, burn or cause

death. Disconnect power to pump before disassembly.

1. Follow Steps 1-8 under “Motor Replacement” Page 9,
and proceed with step 2 below.

2. Remove the four nuts, lockwashers, and washers (Key
Nos. 8, 9A, and 9B) from the staybolts (Key No. 19).

3. The shaft seal consists of an O-Ring (Key No. 15A), the
stationary half of the mechanical seal (Key No. 15B),
the rotating half of the mechanical seal (Key No. 15C),
a second O-Ring (Key No. 15D - inside No. 15C), a flat
washer (Key No. 15E), a spring (Key No. 15F), and a
mechanical drive ring (Key No. 15G), in that order, see
Figure 13, below. Turn the pump head upside down
and remove the stationary part of the seal (Key No.
15B) from the seal seat in the base of the motor
bracket.

NOTICE: Use care not to chip or scratch the seal seat
during disassembly and assembly.

11

FIGURE 13

2 Part 7 Part

Low Pressure Seal High Pressure Seal

B78038 B78039

BVM2-30/2 through BVM2-120 BVM2-150, BVM2-180
BVM4-20/2 through BVM4-120 BVM4-140, BVM4-160

B78040 B78041

BVM8-20/1 through BVM8-120 BVM8-140, BVM8-160

BVM16-30/2 through BVM16-80 BVM16-100, BVM16-120

TABLE VII – Seal Type Identification

15A

15B

15C

15D
15E

15F

15G

16A

16B

16C

16A

12

4. Clean the seal seat with a wet cloth.

5. Remove the rotating parts of the seal by twisting and
pulling up on them until they come off of the shaft (Key
Nos.15C and 15D, 15E, 15F, and 15G). Discard the
old seal.

Seven Part Mechanical Seal Reassembly:

NOTICE: Before assembly check and clean all sealing and

gasket surfaces with a clean wet cloth. Replace all seals,
gaskets, and O-Rings.

1. Turn the motor bracket (Key No.7) upside down.

2. Moisten the seal seat (in the motor bracket) with a
small amount of water.

3. Lubricate the larger diameter O-Ring (Key No. 15A)
with a small amount of water and install it on the
stationary half of mechanical seal (Key No. 15B).

4. Press the stationary half of the shaft seal (Key No. 15B)
with O-Ring (Key Nos. 15A and 15B) into the seal seat
of the motor bracket. Use finger pressure only. If a tool
is used, protect the seal face from tools with a clean
cloth.

NOTICE: Be sure the seal is installed evenly to avoid
pinching the O-Ring.

5. Lubricate smaller diameter O-Ring (Key No. 15D) with
water and press it into the rotating half of the
mechanical seal (Key No.15C).

6. Install the mechanical drive ring (Key No. 15G) on the
shaft (Key No. 16A). Be sure the drive ring butts up
against the mechanical seal spacer (Key No. 16C).

7. Install the spring (Key No.15F) up against the drive ring
on the shaft .

8. Install the flatwasher (Key No.15E) on the shaft, against
the spring.

9. Install the rotating half of the mechanical seal (Key
No.15C) on the shaft. Align the grooves on the rotating
half of the mechanical seal with the teeth on the
mechanical drive ring (Key No. 15G).

10. Follow Steps 11 - 23 under “Replacing Pump Stack”,
Page 10.

Frequency of Starts and Stops

Check pump cycling frequency and make sure that the
pump is not starting more than:

Frost Protection

1. If you do not use your pump during seasons of frost,
drain it and add a glycol based antifreeze (50/50
mixture) to avoid damage.

Risk of water damage and injury. Watch the
direction of the priming plug and make sure that liquid
escaping from it does not injure persons nearby or damage
the motor or other components. In hot water installations,
pay particular attention to the risk of injury from scalding
hot water.

2. Upon restart dispose of spent antifreeze properly.

3. Do not replace the drain plug or tighten the priming plug

until you put the pump back in service again.

Regular Maintenance Checks

The following checks should be made at regular intervals:

1. The pump meets required performance and is operating

smoothly and quietly.

2. There are no leaks.

3. The motor is not overheating.

4. Remove and clean all strainers and filters in the system.

5. Verify amp draw – check motor amperage.

6. Pump wear rings and shaft require no regular

maintenance.

Coupling Motor Staybolt Stack Nut

Socket Head Socket Head Socket Head Capscrew Capscrew Hex Hex Hex Hex

Screw Screw Screw Hex Head Hex Head Nut Nut Nut Nut

M6 x 20 M8 x 25 M10 x 25 3/8 x 1-1/2 1/2 x 1-1/2 1/2 - 13 5/8 - 11 M8 M12

Hardware
Part Numbers M11369 M11398 M11491 S23568 S23623 S26460 S26462 M11385 M11419

Pump Model
Number

BVM2 Series 20 35 – 30 35 45 – 10 –

BVM4 Series 20 35 – 30 35 45 – 10 –

BVM8 Series 20 35 45 30 35 – 75 – 30

BVM16 Series – 35 45 – 35 – 75 – 30

TABLE VIII – Torque Specifications (foot-lbs.) For Cast Iron and Stainless Steel Models

Cycles Motor HP Rating

20 times per hour 1/2 - 5 HP motors

15 times per hour 7- 1/2 - 15 HP motors

10 times per hour 20 and 25 HP motors

TABLE IX – Maximum Number of Cycles

13

BERKELEY LIMITED WARRANTY

Berkeley/Wicor Canada Company (“Wicor”) warrants to the original consumer purchaser (“Purchaser”) of its products that they are free from defects in material or
workmanship.

If within twelve (12) months from the date of installation or twenty-four (24) months from the date of manufacture any such product shall prove to be defective, it shall
be repaired or replaced at Berkeley’s/Wicor’s option, subject to the terms and conditions set forth below.

General Terms and Conditions

Purchaser must pay all labor and shipping charges necessary to replace product covered by this warranty. This warranty shall not apply to products which, in the sole
judgement of Berkeley/Wicor, have been subject to negligence, abuse, accident, misapplication, tampering, alteration; nor due to improper installation, operation,
maintenance or storage; nor to other than normal application, use or service, including but not limited to, operational failures caused by corrosion, rust or other
foreign materials in the system, or operation at pressures in excess of recommended maximums.

Requests for service under this warranty shall be made by contacting the installing Berkeley/Wicor dealer as soon as possible after the discovery of any alleged defect.
Berkeley/Wicor will subsequently take corrective action as promptly as reasonably possible. No requests for service under this warranty will be accepted if received
more than 30 days after the term of the warranty.

The warranty on all three phase submersible motors is void if three-leg overload protection of recommended size is not used.

This warranty sets forth Berkeley’s/Wicor’s sole obligation and purchaser’s exclusive remedy for defective products.

BERKELEY/WICOR SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, OR CONTINGENT DAMAGES WHATSOEVER.

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS WARRANTIES. IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED
TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL NOT EXTEND BEYOND THE DURATION OF THE
APPLICABLE EXPRESS WARRANTIES PROVIDED HEREIN.

Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts, so the above
limitations or exclusions may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

In the U.S.: Berkeley, 293 Wright St., Delavan, WI 53115

In Canada: Wicor Canada Company, 1800 Courtney Park Drive East, Unit 5-7, Mississauga, Ontario L5T 1W1

TROUBLESHOOTING GUIDE

Hazardous voltage and risk of sudden starts. Disconnect all power to the pump before servicing or working

on pump. Make sure that power is locked out and that pump cannot be accidentally started.

PROBLEM CAUSE

1. Motor does not run when started A. Power failure
B. Fuses blown
C. Motor starter overload has tripped out
D. Main contacts in motor starter are not making contact or the coil is faulty
E Control circuit fuses are defective
F. Motor is defective

2. Motor starter overload trips out immediately A. One fuse has blown

when power supply is switched on B. Contacts in motor overload relay are faulty

C. Cable connections are loose or faulty
D. Motor winding is defective
E. Pump mechanically blocked
F. Overload setting is too low

3. Motor starter overload trips out occasionally A. Overload setting is too low
B. Low voltage at peak times

4. Motor starter has not tripped out but the motor A. Check 1 A), B), D,) and E)

does not run

5. Pump capacity is not constant A. Pump inlet pressure is too low
B. Suction pipe/pump partly blocked
C. Pump is sucking air

6. Pump runs but gives no water A. Suction pipe/pump blocked
B. Foot or non-return valve is blocked in closed position
C. Leakage in suction pipe
D. Air in suction pipe or pump
E. Motor rotates in the wrong direction

7. Pump runs backwards when switched off A. Leakage in suction pipe
B. Foot or non-return valve is defective
C. Foot valve is blocked in open or partly open position
D. Non return valve leaks or is blocked in open or partly open position
E. Discharge valve is defective

8. Leakage from shaft seal A. Pump shaft position is incorrect
B. Shaft seal is defective

9. Noise A. Cavitation is occurring in the pump
B. Pump does not rotate freely (That is, there is increased frictional resistance)

because of incorrect shaft position

14

FIGURE 14 - Exploded View BVM2 and BVM4

Key

No. Description

1 Motor
2 Coupling Half
3 Socket Head Screw
4 Coupling Guard
5 Coupling Pin
6 Vented Priming Plug
7 Motor Bracket

8 Staybolt Nut
9A Staybolt Lockwasher
9B Staybolt Flat Washer
10 Flatwasher
11 Lockwasher
12 Capscrew
13 Spring Ring
14 Two part Mechanical Seal (Includes 14A and 14B)

14A Stationary Half of Mechanical Seal
14B Rotating Half of Mechanical Seal

15 Seven Part Mechanical Seal (Includes 15A thru 15G)

15A O-Ring, Larger Diameter
15B Stationary Half of Mechanical Seal
15C Rotating Half of Mechanical Seal

15D O-Ring, Smaller Diameter

15E Flat Washer
15F Spring

Key

No. Description

15G Mechanical Drive Ring

16 Replacement Stack Kit (Incl. Key Nos. 16A thru 16L)
16A Shaft
16B Stop Ring
16C Mechanical Seal Spacer
16D Upper Intermediate Chamber

16E Spacer

16F Impeller
16G Diffuser
16H Spacer

16I Bearing

16J Shaft Washer
16K Nut

16L Chamber without Diffuser

17 Sleeve Gasket
18 Stainless Steel Sleeve
19 Staybolt
20 Pipe Plug
21 Suction/Discharge

21A O-Ring (Bottom Chamber)

22 Drain Plug Gasket
23 O-Ring
24 O-Ring
25 Drain Plug

REPAIR PARTS LIST FOR BVM2 AND BVM4 SERIES MODELS

BVM2
BVM4

16D

1

16E

2

16F

16G

3

4

5

8

9A
9B

16F
16G

17

16H

18

19

17

20

21

11

12

10

6

7

13

2

3

16F
16G

16F
16G

16E

16I

16F
16E
16J

16K

21A
20

14B

16A

14A

15A
15B

15C
15D
15E
15F
15G

4

16L

16B

16C

3362 0199

22

23

24

25

15

REPAIR PARTS LIST FOR BVM8 AND BVM16 SERIES MODELS

1

Figure 15 - Exploded View BVM8 and BVM16

Key

No. Description

1 Motor
2 Coupling Half
3 Socket Head Screw
4 Coupling Guard
5 Coupling Pin
6 Vented Priming Plug
7 Motor Bracket

8 Staybolt Nut
9A Staybolt Lockwasher
9B Staybolt Flat Washer
10 Flat Washer
11 Lock Washer
12 Capscrew
13 Spring Ring
14 Two Part Mechanical Seal (Includes 14A and 14B)

14A Stationary Half of Shaft Seal
14B Rotating Half of Shaft Seal

15 Seven Part Mechanical Seal (Includes 15A thru 15G)

15A O-Ring, Larger Diameter
15B Stationary Half of Mechanical Seal
15C Rotating Half of Mechanical Seal

15D O-Ring, Smaller Diameter

15E Flat Washer
15F Spring

Key
No. Description

15G Mechanical Drive Ring

16 Replacement Stack Kit (Incl.16A thru 16L)

16A Shaft

16B Stop Ring
16C Mechanical Seal Spacer
16D Upper Intermediate Chamber

16E Spacer

16F Impeller
16G Diffuser
16H Spacer

16I Bearing

16J Shaft Washer
16K Nut
16L Chamber without Diffuser

17 Sleeve Gasket
18 Stainless Steel Sleeve
19 Staybolt
20 Pipe Plug
21 Suction/Discharge

21A O-Ring (Bottom Chamber)

22 Drain Plug Gasket
23 O-Ring
24 O-Ring
25 Drain Plug

BVM8

BVM16

16D

16E

2

3

4

5

7

10

11

12

14A

14B

16A

13

15A
15B

15C
15D
15E
15F
15G

16B

16C

8

2

3363 0199

9A

9B

16F

6

3

4

16H

16D

16G

16F

16G

16D

16F

16H

16I

16G

16F

16G

16J

16K

16L

17

18

19

17

20

20

21

22

23

25

16

FIGURE 16 - Exploded View BVMI/X2 and BVMI/X4

Key

No. Description

1 Motor
2 Coupling Half
3 Socket Head Screw
4 Coupling Guard
5 Coupling Pin
6 Motor Bracket

7 Staybolt Nut
8A Staybolt Lockwasher
8B Staybolt Flat Washer

9 Vented Priming Plug
10 Flatwasher
11 Lockwasher
12 Capscrew
13 Spring Ring
14 Two part Mechanical Seal (Includes 14A and 14B)

14A Stationary Half of Mechanical Seal
14B Rotating Half of Mechanical Seal

15 Seven Part Mechanical Seal (Includes 15A thru 15G)

15A O-Ring, Larger Diameter
15B Stationary Half of Mechanical Seal
15C Rotating Half of Mechanical Seal

15D O-Ring, Smaller Diameter

15E Flat Washer
15F Spring

Key

No. Description

15G Mechanical Drive Ring

16 Replacement Stack Kit (Incl. Key Nos. 16A thru 16L)
16A Shaft
16B Stop Ring
16C Mechanical Seal Spacer
16D Upper Intermediate Chamber
16E Spacer
16F Impeller
16G Diffuser
16H Spacer

16I Bearing

16J Shaft Washer
16K Nut
16L Chamber without Diffuser

17 Sleeve Gasket
18 Stainless Steel Sleeve

19 Staybolt
21A Suction/Discharge
21B Base
21C Base Reinforcement

22 O-Ring

23 O-Ring

24 Drain Plug (Low Pressure Side)

25 Drain Plug (High Pressure Side)

REPAIR PARTS LIST FOR BVMI/X2 AND BVMI/X4 SERIES MODELS

BVMI/X2
BVMI/X4

16D

1

16E

2

6

7

16F
16G

3

4

10

5

13

11

12

14A

15A
15B

14B

15C
15D
15E
15F

16A

15G

8A

8B

9

2
3

16F

17

16G

16H

18

16F
16G

19

16F
16G

16E

4

16I

17

16F
16E
16J

16K

23

25

16L

16B

16C

21A

22

23

24

21B

21C

4177 0502

17

REPAIR PARTS LIST FOR BVMI/X8 AND BVMI/X16 SERIES MODELS

1

Figure 17 - Exploded View BVMI/X8 and BVMI/X16

Key

No. Description

1 Motor
2 Coupling Half
3 Socket Head Screw
4 Coupling Guard
5 Coupling Pin
6 Vented Priming Plug
7 Motor Bracket

8 Staybolt Nut
9A Staybolt Lockwasher
9B Staybolt Flat Washer
10 Flat Washer
11 Lock Washer
12 Capscrew
13 Spring Ring
14 Two Part Mechanical Seal (Includes 14A and 14B)

14A Stationary Half of Shaft Seal
14B Rotating Half of Shaft Seal

15 Seven Part Mechanical Seal (Includes 15A thru 15G)

15A O-Ring, Larger Diameter
15B Stationary Half of Mechanical Seal
15C Rotating Half of Mechanical Seal

15D O-Ring, Smaller Diameter

15E Flat Washer
15F Spring

Key

No. Description

15G Mechanical Drive Ring

16 Replacement Stack Kit (Incl.16A thru 16L)

16A Shaft

16B Stop Ring
16C Mechanical Seal Spacer
16D Upper Intermediate Chamber

16E Spacer

16F Impeller
16G Diffuser
16H Spacer

16I Bearing

16J Shaft Washer
16K Nut
16L Chamber without Diffuser

17 Sleeve Gasket
18 Stainless Steel Sleeve
19 Staybolt

21A Suction/Discharge

21B Base

22 O-Ring
23 O-Ring
24 Drain Plug (Low Pressure Side)
25 Drain Plug (High Pressure Side)

BVMI/X8

BVMI/X16

16D

16E

2

3

4

5

7

10

11

12

14A

14B

16A

13

15A
15B

15C
15D
15E
15F
15G

16B

16C

8

9A

9B

6

3

2

4

16H

16F

16D

16G

16F

16G

16D

16F

16H

16I

16G

16F

16G

16J

16K

16L

17

21A

17

18

19

23

25

21B

22

23

24

4178 0502

18