Dover PSG Blackmer G Series User manual

BLACKMER GEAR PUMP
960701
INSTRUCTIONS NO. 1902-a00
INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS
MODELS: G-SERIES
Section
Effective
Replaces
1902
October 2022
September 2022
G Series
Sealed Internal
Gear Pumps
1902-a00
Where InnovationFlows

Always read the most current version of this manual before performing any work on or around this pump.
The most current version of this manual is freely available on the web at www. blackmer.com
Blackmer pumps are specifically configured for your unique application conditions. Those application
conditions and the details of the pump configuration were documented during the ordering process. Keep
that information available in a safe place, as it may be needed when troubleshooting pump problems or
when ordering spare parts or repairs.
Blackmer Gear Pumps are covered by one or more of the following patents: U.S.Patent Nos. 7549205,
7137793, 7183683, 8,608,465B2 Australian Patent No. AU2005233534B2; Korean Patent No. 10-2006-
7023162; Mexican Patent No. PA/2006/011436, Russian Patent No. 2006138540(041952); China Patent
No. ZL 201280031563.6; and other patents pending.

1902-a00
Table of Contents
SECTION 1 CAUTIONS—READ FIRST! .................................................................................................................... 4
SECTION 2 PUMP DESIGNATION SYSTEM ........................................................................................................... 5
SECTION 3 HOW IT WORKS—INTERNAL GEAR TECHNOLOGY ........................................................... 9
SECTION 4 SUGGESTED INSTALLATION & OPERATION ........................................................................ 10
SECTION 5 MAINTENANCE ............................................................................................................................................ 15
SECTION 6 DISASSEMBLY ............................................................................................................................................. 17
SECTION 7 REASSEMBLY............................................................................................................................................... 19
SECTION 8 TROUBLESHOOTING ............................................................................................................................... 24
SECTION 9 WARRANTY .................................................................................................................................................... 26

1902-a00 4
S E C T I O N 1
Cautions—Read First!
CAUTION: Only personnel who are familiar with the
operation and repair of mechanical products should perform
the necessary maintenance. You must familiarize yourself
with the entire contents of this manual prior to operating
and/or performing any maintenance.
CAUTION: When selecting a G Series pump for an
application, you must first ensure that the pump components
are compatible with the process media.
CAUTION: Prior to startup, review and understand end-
clearance adjustments. Following these guidelines will
ensure proper end-clearance adjustment avoiding
interference between the gears and head. Interference may
cause heat generation and premature wear.
CAUTION: Do not operate this pump in excess of its rated
capacity, pressure, speed and temperature.
CAUTION: Before any maintenance and repair is
attempted, disconnect the drive.
CAUTION: Before any maintenance or repair is attempted,
bleed all pressure from the pump through the suction or
discharge lines.
CAUTION: Do not remove any pressure-containing
components during pump operation.
CAUTION: All G Series pumps contain residual hydraulic oil
from the factory production test. Hypar-FG 15 food-grade oil
is the standard production test fluid, but any certified
performance testing may be done on a non-food grade oil,
such as Unilube 32 (ISO 32) or Unilube 100 (ISO 100).
Determine if this is compatible with the fluid you are
pumping. If the fluid is incompatible, then the pump must be
fully flushed prior to use.
CAUTION: When pumping fluids at elevated temperatures,
care should be taken to gradually increase temperature.
Rapid temperature increase can damage internal
components.
CAUTION: Ensure that the pump has cooled to a safe
temperature, especially pumps equipped with a jacket,
before any maintenance or repair is attempted.
CAUTION: When pumping fluids at elevated temperatures
the piping may expand, resulting in excessive stress on the
pump. This can cause pump failure. Care must be taken
when considering pipe design to avoid damage from thermal
expansion.
CAUTION: Do not run the pump dry. This can cause
damage to internal components and generate heat, creating
a hazardous condition for volatile fluids.
CAUTION: Prevention of static sparking –If static sparking
occurs, fire or explosion could result. Pump, valves and
containers must be grounded to a proper grounding point
when handling flammable fluids and whenever discharge of
static electricity is a hazard.
CAUTION: The packing in a packed pump is designed to
leak. Therefore, when pumping hazardous liquids, a
mechanical seal is recommended to minimize any potential
source of leakage that could result in a hazardous condition.
CAUTION: Do not adjust packing while pump is in operation.
CAUTION: All inlet and discharge plumbing should be clean
and free from foreign material prior to startup of pump.
CAUTION: Keep hands and fingers away from any pump
opening while the pump is connected to the drive.
CAUTION: When connecting to an electric motor, follow all
safety recommendations provided by the motor
manufacturer.
WARNING: In any positive-displacement pump system, a
reliable pressure-protection device must be used in the
discharge piping to avoid a dangerous pressure increase,
which could cause the pump or any component in the
discharge piping to burst and can lead to serious injury. A
pump-mounted integral relief valve is not intended to be
used in this manner.
WARNING: During operation the pump surface temperature
can exceed 140°F (60°C). Allow for proper cooling before
any handling.
CAUTION: Never remove safety guards from shafts,
couplings, V-belts or pulleys during operation. Doing so
could result in injury.
CAUTION: When pumping high-temperature fluids, avoid
contact with the pump. Serious injury could occur.
CAUTION: Do not wear loose or dangling clothing or jewelry
near the equipment. These items could become caught in
the equipment and cause injury.
CAUTION: Before any maintenance or repair is attempted,
ensure that the pump has been thoroughly flushed of any
hazardous fluids. Review the Material Safety Data Sheet
(MSDS) applicable to the fluid for proper handling.

1902-a00 5
S E C T I O N 2
Designation System
EXAMPLE:
G1-133SNB/4ALT/C9TCN/N/NNNN/000
G
JACKET
-
MODEL
EXTERNALS
INTERNALS
CLEARANCE
/
PORTS
ORIENTATION
/
BUSHINGS
SEAL TYPE /
MATERIAL
SEAL
FACES
/
RELIEF
VALVE
/
JACKET
OPTIONS
/
SPECIALTY
CODE
1
2
C
C
A
1.5A
RT
C
1B
CANR
N = NO
RELIEF
VALVE
XXXX
000
2
4
S
D
B
1.5N
LT
B
1V
CASC
05
B
24
W
N
C
2A
RB
T
9T
CACR
06
C
32
S
D
2N
LB
I
PG
SCSC
07
H
55
W
E
2.5A
RL
PH
NAPA
08
V
69
F
3A
LR
3T
NPNS
09
82
4A
CV
SCAE
13
133
6A
40V
SCCE
15
222
NP
SCVE
16
SCVG
20
SCVV
CATU
TUTU
SCTU
MATERIAL CODES
JACKETED
1 = NON-JACKETED
2 = JACKETED
MODELS
2 = 2 in³/rev
4 = 4 in³/rev
24 = 24 in³/rev
32 = 32 in³/rev
55 = 55 in³/rev
69 = 69 in³/rev
82 = 82 in³/rev
133 = 133 in³/rev
222 = 222 in³/rev
MATERIAL (EXTERNAL)
C = CARBON STEEL
S = STAINLESS STEEL
W = CAST IRON
MATERIAL (INTERNALS)
C = STEEL
D = DUCTILE IRON
N = NITRONIC 60
S = STAINLESS STEEL
W = CAST IRON
CLEARANCES (G1-2/4): IRON/STEEL ROTOR
A = [<540 cSt, <107°C (<225°F)]
B = [<540 cSt, 108-232°C (226-450°F)]
C = [<540 cSt, 233-301°C (451-575°F)]
D = [540-5,400 cSt, 302-343°C (576-650°F)]
E = [5,400-431,000 cSt, 302-343°C (576-650°F)]
CLEARANCES (G1-2/4):
STAINLESS STEEL ROTOR
A = [<540 cSt, <107°C (<225°F)]
B = [<540 cSt, 108-149°C (226-300°F)]
C = [540-5,400 cSt, 150-260°C (301-500°F)]
D = [5,400-431,000 cSt, 150-260°C (301-500°F)]
CLEARANCES (G1-24/32): IRON/STEEL ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [<160 cSt, 108-149°C (226-300°F)]
C = [<160-1,600 cSt, 150-343°C (301-450°F)]
D = [1,600-16,000 cSt, 233-343°C (451-650°F)]
E = [16,000-431,000 cSt, 233-343°C (451-650°F)]
CLEARANCES (G1-24/32): IRON ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [<160 cSt, 108-149°C (226-300°F)]
C = [160-1,600 cSt, 150-232°C (301-450°F)]
D = [1,600-16,000 cSt, 233-343°C (451-650°F)]
E = [16,000-431,000 cSt, 233-343°C (451-650°F)]
CLEARANCES (G1-24/32): STEEL ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [<160 cSt, 108-232°C (226-450°F)]
C = [160-1,600 cSt, 233-343°C (451-650°F)]
D = [1,600-16,000 cSt, 233-343°C (451-650°F)]
E = [16,000-431,000 cSt, 233-343°C (451-650°F)]
CLEARANCES (G1-24/32):
STAINLESS STEEL ROTOR
A = [<1600 cSt, <107°C (<225°F)]
B = [<1600 cSt, 108-177°C (226-350°F)]
C = [1,600-16,000 cSt, 177-260°C (351-500°F)]
D = [16,000-431,000 cSt, 177-260°C (351-500°F)]
CLEARANCES (G1-55/69 & G2-55/69):
IRON ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [<160 cSt, 108-149°C (226-300°F)]
C = [160-1,600 cSt, 150-232°C (301-450°F)]
D = [1,600-16,000 cSt, 233-302°C (451-575°F)]
E = [1,600-16,000 cSt, 303-343°C (576-650°F)]
F = [16,000-431,000 cSt, 303-343°C (576-650°F)]
CLEARANCES (G1-55/69 & G2-55/69)
STEEL ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [160-1,600 cSt, 108-232°C (226-450°F)]
C = [1,600-16,000 cSt, 233-301°C (451-575°F)]
D = [1,600-16,000 cSt, 302-343°C (576-650°F)]
E = [16,000-431,000 cSt, 302-343°C (576-650°F)]
CLEARANCES (G1-55/69):
STAINLESS STEEL ROTOR
A = [<1,600 cSt, <107°C (<225°F)]
B = [1,600-16,000 cSt, 108-177°C (226-350°F)]
C = [1,600-16,000 cSt, 177-260°C (351-500°F)]
D = [16,000-431,000 cSt, 177-260°C (351-500°F)]
CLEARANCES (G1-82 & G2-82): IRON ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [160-1,600 cSt, 108-232°C (226-450°F)]
C = [1,600-16,000 cSt, 233-301°C (451-575°F)]
D = [1,600-16,000 cSt, 302-343°C (576-650°F)]
E = [16,000-431,000 cSt, 302-343°C (576-650°F)]
CLEARANCES (G1-82 & G2-82): STEEL ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [160-1,600 cSt, 108-232°C (226-450°F)]
C = [1,600-16,000 cSt, 233-301°C (451-575°F)]
D = [1,600-16,000 cSt, 302-343°C (576-650°F)]
E = [16,000-431,000 cSt, 302-343°C (576-650°F)]
CLEARANCES (G1-82):
STAINLESS STEEL ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [160-1,600 cSt, 108-163°C (226-325°F)]
C = [1,600-16,000 cSt, 163-260°C (326-500°F)]
D = [16,000-431,000 cSt, 163-260°C (326-500°F)]
CLEARANCES (G1-133/222 & G2-133/222):
IRON ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [160-1,600 cSt, 108-232°C (226-450°F)]
C = [1,600-16,000 cSt, 233-343°C (451-650°F)]
D = [16,000-431,000 cSt, 233-343°C (451-650°F)]
CLEARANCES (G1-133/222): STEEL ROTOR
A = [<160 cSt, <107°C (<225°F)]
B = [160-1,600 cSt, 108-232°C (226-450°F)]
C = [1,600-16,000 cSt, 233-343°C (451-650°F)]
D = [16,000-431,000 cSt, 233-343°C (451-650°F)]
CLEARANCES (G1-133/222):
STAINLESS STEEL ROTOR
A = [<1,600 cSt, <135°C (<275°F)]
B = [1,600-16,000 cSt, 136-260°C (276-500°F)]
C = [16,000-431,000 cSt, 136-260°C (276-500°F)]
PORTS
1.5A = 1.5 in ANSI
1.5N = 1.5 in NPT
2A = 2 in ANSI
2N = 2 in NPT
2.5A = 2.5 in ANSI
3A = 3 in ANSI
4A = 4 in ANSI
6A = 6 in ANSI
ORIENTATION (when looking at the shaft)
RT = Right Port, Top Port
LT = Left Port, Top Port
RB = Right Port, Bottom Port
LB = Left Port, Bottom Port
RL = Right Port, Left Port
LR = Left Port, Right Port
BUSHING
C = Carbon-graphite bushings
B = Bronze bushings
T = Tungsten-carbide bushings
I = Hardened Cast Iron
SEAL TYPE / MATERIAL
1B = Type 1 Mechanical Seal (Buna-N)
1V = Type 1 Mechanical Seal (FKM)
9T = Type 9 Mechanical Seal (PTFE)
PG= Packing (PTFE-GRAPHITE)
PH = High Temperature Graphite Packing
3T = Triple Lip Seal
CV = Single Cartridge Seal (FKM)
40V = 40X3 Cartridge Seal (FKM)
NP = NO PACKING
SEAL FACES
CANR = CARBON - NI-RESIST
CASC = CARBON - SILICON CARBIDE
CACR = CARBON - CERAMIC
SCSC = SILICON CARBIDE - SILICON CARBIDE
NAPA = NOT APPLICABLE (PACKING)
NPNS = NO PACKING/NO SEAL
SCAE = SILICONE CARBIDE/ TFE/P
ELASTOMERS
SCCE = SILICONE CARBIDE/ FFKM
ELASTOMERS
SCVE = SILICONE CARBIDE/ VFKM
ELASTOMERS
SCVG = SILICONE CARBIDE/ FKM
ELASTOMERS, FDA GREASED
SCVV = SILICONE CARBIDE/ FKM
ELASTOMERS, VACUUM
CATU = CARBON - TUNGSTEN
TUTU = TUNGSTEN - TUNGSTEN
SCTU = SILICON CARBIDE –TUNGSTEN

1902-a00 6
RELIEF VALVE (G1-2/4):
CAST IRON /CARBON STEEL
N = NO RELIEF VALVE
07 = 2.1 to 5.2 bar (30 to 75 psi)
12 = 5.2 to 8.6 bar (76 to 125 psi)
20 = 8.7 to 13.8 bar (126 to 200 psi)
RELIEF VALVE (G1-2/4): STAINLESS STEEL
N = NO RELIEF VALVE
07 = 2.1 to 5.2 bar (30 to 75 psi)
12 = 5.2 to 8.6 bar (76 to 125 psi)
15 = 8.7 TO 10.34 BAR (126 TO 150 psi)
RELIEF VALVE (G1-24/32): CAST
IRON/CARBON STEEL
N = NO RELIEF VALVE
05 = 1.0 to 3.5 bar (15 to 50 psi)
08 = 3.5 to 5.5 bar (51 to 80 psi)
15 = 5.6 to 10.3 bar (81 to 150 psi)
20 = 10.4 to 13.8 bar (151 to 200 psi)
RELIEF VALVE (G1-24/32): STAINLESS STEEL
N = NO RELIEF VALVE
05 = 1.0 to 3.5 bar (15 to 50 psi)
08 = 3.5 to 5.5 bar (51 to 80 psi)
15 = 5.6 to 10.3 bar (81 to 150 psi)
RELIEF VALVE (G1-55/69/82 & G2-55/69/82):
CAST IRON
N = NO RELIEF VALVE
06 = 1.4 to 4.1 bar (20 to 60 psi)
09 = 4.2 to 6.2 bar (61 to 90 psi)
16 = 6.3 to 11.1 bar (91 to 160 psi)
20 = 11.1 to 13.8 bar (161 to 200 psi)
RELIEF VALVE (G1-55/69/82): CARBON STEEL
N = NO RELIEF VALVE
06 = 1.4 to 4.1 bar (20 to 60 psi)
09 = 4.2 to 6.2 bar (61 to 90 psi)
16 = 6.3 to 11.1 bar (91 to 160 psi)
20 = 11.1 to 13.8 bar (161 to 200 psi)
RELIEF VALVE (G1-55/69/82):
STAINLESS STEEL
N = NO RELIEF VALVE
06 = 1.4 to 4.1 bar (20 to 60 psi)
09 = 4.2 to 6.2 bar (61 to 90 psi)
15 = 6.3 to 10.3 bar (91 to 150 psi)
RELIEF VALVE (G1-133/222 & G2-133/222)
CAST IRON
N = NO RELIEF VALVE
05 = 1.4 to 3.5 bar (20 to 50 psi)
08 = 3.5 to 5.5 bar (51 to 80 psi)
13 = 5.6 to 9.0 bar (81 to 130 psi)
20 = 9.0 TO 13.8 BAR (131 TO 200 PSI)
RELIEF VALVE (G1-133/222)
STAINLESS STEEL
N = NO RELIEF VALVE
05 = 1.4 to 3.5 bar (20 to 50 psi)
08 = 3.5 to 5.5 bar (51 to 80 psi)
13 = 5.6 to 9.0 bar (81 to 130 psi)
15 = 9.0 to 10.3 bar (131 to 150 psi)
JACKETED OPTIONS
NNNN = NO JACKETING
B = Bracket
C = Case
H = Head
V = Valve

1902-a00 7
EXAMPLE:
G1-5 5W WA /2 N RT / CP GN A/ 2 0/ NN NN / 00 0 _ CXXXX_BSDCSXXX_GYYYYRZZ_MXXXZHPYYYY_ZZZV XXHz_AAA/B/WEG
CERT
BASEPLATE
_C
CERTIFIED
HYDRO
TEST
MATERIAL
CERT
PMI
CERT
PERFORMANCE
TESTS
_
BASEPLATE
SELECTED
BASEPLATE
LENGTH
REF
_
GEAR
REDUCER
AND
RATIO
GEARBOX
FRAME
REF
_
MOTOR
FRAME
SIZE
MOTOR
HP
MOTOR
SPEED
(RPM)
_
MOTOR
VOLTAGE
MOTOR
FREQ.
(HZ)
_
MOTOR
ENCLOSURE
RATING
/
INVERTER
DUTY
/
MOTOR
MFG
CODE
X
X
X
X
BSDCS
XXX
GYYYY
RZZ
MXXX
ZHP
YYYY
ZZZ
XX
BLANK
Y
XXX
N
A
N
P
EXP
N
W
B
N
TEFC
BLANK
C
W
D
CERT CODES
BASEPLATE CODES
C = DENOTES CERTIFICATION(S) SELECTED
CERTIFIED HYDRO TEST (WITNESS / NON-WITNESS)
X= Not Required
N= Certified Hydrostat Non-Witness
W= Certified Hydrostat Witness
MATERIAL CERTIFICATION (NOT REQUIRED / 3.1 MAT’L CERTS FOR WETTED COMPONENTS)
X = Not Required
A= 3.1 Material Certs for Wetted Components
B= 3.1 Material Certs (Pressure Containing) w/Photo –MCM
C= 2.2 Material Report (Pressure Containing) - MR
D= 2.2 Material Report (Pressure Containing) w/Photo - MPT
PMI CERTIFICATION (NOT REQUIRED / WETTED COMPONENTS NON-WITNESS / WETTED
COMPONENTS WITNESS)
X= Not Required
N= Non-Witness
PERFORMANCE TESTS
X= Not Required
P= Production Test Report (PTR)
N= Certified Performance Test (Non-Witness)
W= Certified Performance Test (Witness)
BSDCS = DESIGNATES BASEPLATE SELECTED
XXX = BASEPLATE LENGTH REFERENCE
GYYYY = GEAR REDUCER SELECTED AND RATIO
RZZ = GEARBOX FRAME REFERENCE
MXXX = MOTOR FRAME SIZE
ZHP = MOTOR HORSEPOWER
YYYY_ZZZVXXHZ
YYYY = Motor Speed in RPM
ZZZ = Motor Voltage
XX = Motor frequency in Hz
MOTOR ENCLOSURE RATING
Blank = No Rating
EXP = Explosion Proof
TEFC = Totally Enclosed Fan Cooled
B –INVERTER DUTY
Y = Yes
N = No
Blank = Not specified
XXX –MOTOR MANUFACTURER CODE

1902-a00 8
PUMP NOMINAL RATINGS
Nominal Pump
Rating
Max. Discharge
Pressure
Max.
Temperature
Nominal Pump
Rating
Max. Discharge
Pressure
Max.
Temperature
Nominal
Pump Rating
Max. Discharge
Pressure
Max.
Temperature
CAST IRON
CARBON STEEL
STAINLESS STEEL
Model
RPM
GPM
(m3/h)
PSIG (bar)
Fahrenheit
(Celsius)
RPM
GPM
(m3/h)
PSIG (bar)
Fahrenheit
(Celsius)
RPM
GPM (m3/h)
PSIG (bar)
Fahrenheit
(Celsius)
G1-2
1,750
15 (3.4)
200 (13.8) >20 cSt
650° (343°)
1,750
15 (3.4)
200 (13.8) >20 cSt
650° (343°)
1,150
10 (2.3)
150 (10.3) >550 cSt
500° (260°)
G1-4
1,750
30 (6.8)
200 (13.8) >20 cSt
650° (343°)
1,750
30 (6.8)
200 (13.8) >20 cSt
650° (343°)
1,150
20 (4.5)
150 (10.3) >550 cSt
500° (260°)
G1-24
780
75 (17.0)
200 (13.8) >20 cSt
650° (343°)
780
75 (17.0)
200 (13.8) >20 cSt
650° (343°)
520
50 (11.4)
150 (10.3) >550 cSt
500° (260°)
G1-32
780
100 (22.7)
200 (13.8) >20 cSt
650° (343°)
780
100 (22.7)
200 (13.8) >20 cSt
650° (343°)
520
65 (14.8)
150 (10.3) >550 cSt
500° (260°)
G1-55
640
135 (30.7)
200 (13.8) >20 cSt
650° (343°)
640
135 (30.7)
200 (13.8) >20 cSt
650° (343°)
420
90 (20.4)
150 (10.3) >550 cSt
500° (260°)
G2-55
640
135 (30.7)
200 (13.8) >20 cSt
650° (343°)
-
-
-
-
-
-
-
-
G1-69
520
140 (31.8)
200 (13.8) >20 cSt
650° (343°)
520
140 (31.8)
200 (13.8) >20 cSt
650° (343°)
420
110 (25.0)
150 (10.3) >550 cSt
500° (260°)
G2-69
520
140 (31.8)
200 (13.8) >20 cSt
650° (343°)
-
-
-
-
-
-
-
-
G1-82
640
200 (45.4)
200 (13.8) >165 cSt
500° (260°)
640
200 (45.4)
200 (13.8) >165 cSt
500° (260°)
520
160 (36.3)
125 (8.6) >550 cSt
500° (260°)
G2-82
640
200 (45.4)
200 (13.8) >165 cSt
500° (260°)
-
-
-
-
-
-
-
-
G1-133
520
300 (68.1)
200 (13.8) >165 cSt
500° (260°)
520
300 (68.1)
200 (13.8) >165 cSt
500° (260°)
350
200 (45.4)
125 (8.6) >25 cSt
500° (260°)
G2-133
520
300 (68.1)
200 (13.8) >165 cSt
500° (260°)
-
-
-
-
-
-
-
-
G1-222
520
500 (113.6)
200 (13.8) >165 cSt
500° (260°)
520
500 (113.6)
200 (13.8) >165 cSt
500° (260°)
350
320 (72.7)
125 (8.6) >25 cSt
500° (260°)
G2-222
520
500 (113.6)
200 (13.8) >165 cSt
500° (260°)
-
-
-
-
-
-
-
-
(1) Maximum pressure listed reflects maximum differential pressure and maximum allowable working pressure.
(2) Values listed in table are nominal and for reference only. To ensure proper pump selection, always refer to Blackmer Select.
SPECIFICATIONS: PUMP JACKETING
Model
Number
Maximum Temperature/Pressure of Fluid in Jackets
Steam (Saturated)
Heat Transfer Oil
Temperature
Pressure
Temperature
Pressure
°F
°C
PSIG
Bar
°F
°C
PSIG
Bar
G2-55
365
185
150
10.4
450
232
150
10.4
G2-69
365
185
150
10.4
450
232
150
10.4
G2-82
365
185
150
10.4
450
232
150
10.4
G2-133
365
185
150
10.4
450
232
150
10.4
G2-222
365
185
150
10.4
450
232
150
10.4
(1) Ports are suitable for use with 125# ANSI cast or ductile iron or 150# ANSI steel companion flanged fittings. All other tapped for standard pipe (NPT).
(2) For use at higher temperatures. consult factory for recommended materials of construction.

1902-a00 9
S E C T I O N 3
How It Works—Internal Gear Technology
The G SERIES GEAR PUMP is a rotating, positive displacement pump. These drawings show the flow pattern through the pump
upon its initial rotation. It is assumed that the pump has no fluid in it prior to its initial rotation.
As the rotor continues to turn, the liquid is
forced past the crescent-shaped area and
moves toward the discharge port.
As the rotor completes one complete
rotation, the rotor and idler teeth interlock,
forcing the liquid through the discharge of the
pump. The pump may take several rotations
to completely prime depending on the
conditions of the application.
3
4
The shaded area indicates the liquid as it is
drawn into the liquid inlet port of the pump. As
the rotor turns, atmospheric pressure forces
the liquid between the rotor teeth and idler
teeth. The two arrows indicate the rotational
direction of the pump.
1
2
As the rotor continues to turn, the liquid is
forced through the crescent-shaped area of
the wetted path. The crescent-shaped area
divides the liquid and acts as a barrier
between the inlet and discharge ports.

1902-a00 10
S E C T I O N 4
Suggested Installation and Operation
G Series gear pumps are designed to meet the performance requirements of even the most demanding pumping applications. They
have been designed and manufactured to the highest standards and are available in a number of different sizes to meet your pumping
needs. Refer to the performance section of this manual for an in-depth analysis of the performance characteristics of your pump.
INSTALLATION
Months of careful planning, study and selection efforts can result in unsatisfactory pump performance if installation details are left to
chance.
Premature failure and long-term dissatisfaction can be avoided if reasonable care is exercised throughout the installation process.
LOCATION
Noise, safety and other logistical factors usually dictate whereequipment will be situated on the production floor. Multiple installations
with conflicting requirements can result in congestion of utility areas, leaving few choices for additional pumps.
Within the framework of these and other existing conditions, every pump should be located in such a way that key factors are
balanced against each other to maximum advantage.
ACCESS
The location of the pumping unit should be accessible. If it’s easy to reach the pump for maintenance, personnel will have an easier
time carrying out routine inspections and adjustments. Should major repairs become necessary, ease of access can play a key role
in speeding the repair process and reducing total downtime.
FOUNDATION
BASEPLATES AND ANCHORS
The preferred mounting for a baseplate is on a concrete pad with grouting. No matter how robust the design, there is always some
flexibility in the baseplate itself. If there is insufficient support under the baseplate, it can distort causing alignment difficulties and
normal vibrations can be amplified to unacceptable levels through resonance in the pump support and/or piping. A properly grouted
baseplate will resist distortion and will provide sufficient mass to dampen any vibration.
NOTE: When pumps and motors are assembled on a baseplate at the factory, a preliminary alignment is done to ensure that the
pump and motor can be aligned at its installation. This alignment is not to be considered as a final alignment. The factory alignment
can, and does, change during shipment and when the pumping unit is installed. Actually, several alignments are necessary, as will
be described later.
Anchor (foundation) bolts are used to hold the baseplate to its support structure, whatever that may be. In the preferred case of
mounting the pump unit on a concrete pad, the anchor bolts are set into the pad as indicated in the following illustration. When
pouring the pad, it’s helpful to have a wooden template attached to the foundation form to position the anchor bolts at their locations
as indicated on the pump unit assembly drawing.
Anchor bolts are usually sized smaller than the anchor bolt hole size in the base.
Calculate bolt length as indicated in Figure A on the left.
The ID of the sleeve should be two bolt sizes larger than the anchor bolt.
Allow approx. ¾" - 1½" space between the bottom edge of the baseplate and the
foundation for grouting.
A “Sleeve” type anchor bolt is shown here. Alternatively, a “hook” or “J” type anchor
bolt may be used.
Pack the space between the anchor bolt and sleeve to prevent concrete and/or grout
from entering this area.
FIGURE A –TYPICAL ANCHOR BOLT (SLEEVE TYPE)