123C SERIES™

The 123C Series™ internal gear steel pump is the flexible, simple, and adaptable solution for a wide range of applications. This new generation of universal pumps comes standard with the U-Plus™ bracket which accepts various sealing options, as well as the ProPort™ casing that accommodates a variety of port sizes and types depending on your needs. It can handle flow rates up to 500 GPM (114 m³/h).

Features & Benefits

All steel construction for refinery and petrochemical applications
Recommended for extremely high temperatures
U-Plus Bracket, available on H-QS sizes, accepts a wide range of sealing options
Opposite porting available on all pump sizes

Downloads

Performance

Videos

Liquids

Downloads

Capacity

to 500 GPM
to 114 m³/h

Viscosity

28 to 2 000 000 SSU
0,1 to 440 000 cSt

Pressure

to 200 PSI
to 14 bars

Temperature

-20 to +800 °F
-30 to +430 °C

Options

Porting

Right Angle (90°) (Rotatable Casing), H-Q

Opposite (180°) (Rotatable Casing), H-QS

Flanged (ASME / ANSI)

Drives

R Offset Gear Reducer Drive

P Purchased Gear Reducer Drive

D Direct-Mounted Drive, H-HL

V Drive | V-Belt Drive

Mounting

Foot Mount

Sealing

Packing

Component Mechanical Seal

Cartridge Mechanical Seal

Cartridge Triple Lip Seal

Specifications

Model	Standard Port Size (inches)	Nominal Pump Rating (GPM)	Nominal Pump Rating (m3/h)	Maximum RPM	Maximum Pressure (PSI)	Maximum Pressure (BAR)
H123C	1.5 in.	15 GPM	3 m³/h	1750 RPM	200 PSI	14 BAR
HL123C	1.5 in.	30 GPM	7 m³/h	1750 RPM	200 PSI	14 BAR
K123C	2 in.	80 GPM	18 m³/h	780 RPM	200 PSI	14 BAR
KK123C	2 in.	100 GPM	23 m³/h	780 RPM	200 PSI	14 BAR
L123C	2.5 in.	135 GPM	31 m³/h	640 RPM	200 PSI	14 BAR
LL123C	3 in.	140 GPM	32 m³/h	520 RPM	200 PSI	14 BAR
LS123C	3 in.	200 GPM	45 m³/h	640 RPM	200 PSI	14 BAR
Q123C	4 in.	300 GPM	68 m³/h	520 RPM	200 PSI	14 BAR
QS123C	6 in.	500 GPM	114 m³/h	520 RPM	200 PSI	14 BAR

Obsolete Models: LL123, Q123, QS123

Photos

Videos

Crude Oils

This is a very generic term for unrefined oils typically being recovered from the ground. Some crude oil may contain particulates from the oil well or recovery method. They are considered to be flammable liquids. Crude oils are later refined and used for everything from making plastics to gasoline.

GB-414

Ductile iron
Hardened, DLC coated parts for robust, long-lasting field performance
Capacities to 210 GPM

GB-425

Ductile Iron
Enhanced wear resistance
Rebuildable
Capacities to 685 GPM

4624C

Cast iron
Abrasive resistant sealing options
Hardened materials standard
Capacities to 182 GPM

Refined Fuels

Refined fuels would include petroleum based fuel oils and some Jet Fuels. Their viscosity and temperature handled can vary greatly. Normally these are handled in bulk transfer operations.

4195

Cast iron
Pressures up to 250 PSI
Capacities to 580 GPM

Ductile Iron
Pressures >200 PSI
Capacities to 190 GPM

475

Cast Iron
Compact installation
Pressure up to 100 PSI
Capacities to 30 GPM

Lube Oil (Machinery Lubrication)

Machinery lubrication pumps are used in everything from small backup generators to naval ships. Lube oils, as the name implies, are the liquids used to lubricate rotating and reciprocating machinery. Lube oils may be handled at higher pressures to ensure their penetration of the equipment.

Ductile Iron
Pressures up to 250 PSI
Capacities to 190 GPM

4195

Cast Iron
Pressures up to 250 PSI
Capacities to 580 GPM

Cast iron
Compact installation
Pressures up to 50 PSI
Capacities to 30 GPM

Asphalt Cement

Clean asphalt contains no fillers and is an oil based liquid. It is primarily used in paving roads, waterproofing liquids, and paints. Typically they are handled at elevated temperatures to reduce the viscosity of the asphalt. The pump needs a source of heat like jacketing or electric heat to prevent the product from solidifying in the pump.

224C

Cast iron
Jacketed for steam/oil heating
Diverse selection of port sizes & ratings
up to 500 GPM

324E

Cast iron
Packing seal
Electrically heated
Up to 685 GPM

Cast Iron
Packing seal
Jacketed for steam/oil heating
Up to 450 GPM

Heat Transfer Liquids (Hot Oil)

Heat transfer liquids, heat transfer oil (HTO) or hot oil, are generally made from one of the following: mineral oil, diphenyls, modified terphenyls or polyalkalene glycols. Heat transfer liquids are used for transferring heat from a source to a point of use such as dies, presses, cooking vessels, processing equipment, etc. Most are handled at temperatures up to 600°F.

4124C

Cast iron
High temperature seal options
Capacities to 500 GPM

4224C

Cast iron
High temperature seal options
Jacketed for steam/oil heating prior to pump startup
Capacities to 500 GPM

4123C

Carbon steel
High temperature seal options
Capacities to 500 GPM

TSM / Catalog / Flyers / Brochures

Service Manual | 2300

Download

Technical Service Manuals

Catalog Section | 2301 Non-Jacketed

Download

Catalog Sections

Flyer | Form 2301 | 123C / 4123C

Download

Product Flyers

REPAIR RESOURCES

Exploded Diagram for Series 123A/4123A - 124A/ 4124A - 126A/4126A - 127A/4127A …
Quick Tip #01 - Setting End Clearance on a Viking Pump Universal Seal Pump
Replacing Packing - 123C & 223C Series™ #vikingpump #gearpump #serviceandrepair
How to Use a Thrust Bearing Locknut Tool
Quick Tip: Change Port Sizes or Types with ProPort™ Casing
Viking Pump Universal Seal Series with Stuffing Box Component Seals Repair Kit Installation
Quick Tip #02 - Install Mechanical Seal into Stuffing Box in Viking Pump Universal Seal Pump

DRAWINGS


H-HL Plain Head and ProPort Casing - 2" Class 125/150 ANSI RH/LH	PDF	STEP

H-HL Plain Head and ProPort Casing - 2" Class 250/300 ANSI RH/LH	PDF	STEP

H-HL with ProPort Casing - 1.5" Class 150 ANSI Opposite	PDF

H-HL with ProPort Casing - 1.5" Class 150 ANSI RH/LH	PDF	STEP

H-HL with ProPort Casing - 1.5" Class 300 ANSI Opposite	PDF

H-HL with ProPort Casing - 1.5" Class 300 ANSI RH/LH	PDF	STEP

H-HL with ProPort Casing - 2" Class 150 ANSI Opposite	PDF

H-HL with ProPort Casing - 2" Class 300 ANSI Opposite	PDF

H-HL with ProPort Casing - DIN 32 PN16 (RF) Opposite	PDF

H-HL with ProPort Casing - DIN 32 PN16 RH/LH	PDF

H-HL with ProPort Casing - DIN 40 PN16 Opposite	PDF

H-HL with ProPort Casing - DIN 40 PN16 RH/LH	PDF

H-HL with ProPort Casing - DIN 50 PN16 Opposite	PDF

H-HL with ProPort Casing - DIN 50 PN16 RH/LH	PDF

H-HL with RV and ProPort Casing - 1.5" Class 150 ANSI Opposite	PDF

H-HL with RV and ProPort Casing - 1.5" Class 150 ANSI RH/LH	PDF	STEP

H-HL with RV and ProPort Casing - 1.5" Class 300 ANSI Opposite	PDF

H-HL with RV and ProPort Casing - 1.5" Class 300 ANSI RH/LH	PDF	STEP

H-HL with RV and ProPort Casing - 1.5" NPT Opposite	PDF

H-HL with RV and ProPort Casing - 1.5" NPT RH/LH	PDF	STEP

H-HL with RV and ProPort Casing - 2" ANSI Flanges Opposite	PDF

H-HL with RV and ProPort Casing - 2" ANSI Flanges Opposite	PDF

H-HL with RV and ProPort Casing - 2" Class 125/150 ANSI RH/LH	PDF	STEP

H-HL with RV and ProPort Casing - 2" Class 250/300 ANSI RH/LH	PDF	STEP

H-HL with RV and ProPort Casing - DIN 32 PN16 (RF) Opposite	PDF

H-HL with RV and ProPort Casing - DIN 32 PN16 RH/LH	PDF

H-HL with RV and ProPort Casing - DIN 40 PN16 Opposite	PDF

H-HL with RV and ProPort Casing - DIN 40 PN16 RH/LH	PDF

H-HL with RV and ProPort Casing - DIN 50 PN16 Opposite	PDF

H-HL with RV and ProPort Casing - DIN 50 PN16 RH/LH	PDF

K-KK Plain Head and ProPort Casing - 3" Class 125/150 ANSI RH/LH	PDF	STEP

K-KK Plain Head and ProPort Casing - 3" Class 250/300 ANSI RH/LH	PDF	STEP

K-KK with Plain Head - 4" Class 150 ANSI Opposite	PDF

K-KK with Plain Head - 4" Class 150 ANSI RH/LH	PDF	STEP

K-KK with ProPort Casing - 2" Class 150 ANSI Opposite	PDF

K-KK with ProPort Casing - 2" Class 150 ANSI RH/LH	PDF	STEP

K-KK with ProPort Casing - 2" Class 300 ANSI Opposite	PDF

K-KK with ProPort Casing - 2" Class 300 ANSI RH/LH	PDF	STEP

K-KK with ProPort Casing - 3" Class 150 ANSI Opposite	PDF

K-KK with ProPort Casing - 3" Class 300 ANSI Opposite	PDF

K-KK with ProPort Casing - DIN 50 PN16 Opposite	PDF

K-KK with ProPort Casing - DIN 65 PN16 Opposite	PDF

K-KK with ProPort Casing - DIN 80 PN16 Opposite	PDF

K-KK with Relief Valve - 4" Class 150 ANSI Opposite	PDF

K-KK with Relief Valve - 4" Class 150 ANSI RH/LH	PDF	STEP

K-KK with RV and ProPort Casing - 2" Class 150 ANSI Opposite	PDF

K-KK with RV and ProPort Casing - 2" Class 150 ANSI RH/LH	PDF	STEP

K-KK with RV and ProPort Casing - 2" Class 300 ANSI Opposite	PDF

K-KK with RV and ProPort Casing - 2" Class 300 ANSI RH/LH	PDF	STEP

K-KK with RV and ProPort Casing - 2" NPT RH/LH	PDF	STEP

K-KK with RV and ProPort Casing - 3" ANSI Flanges Opposite	PDF

K-KK with RV and ProPort Casing - 3" Class 125/150 ANSI RH/LH	PDF	STEP

K-KK with RV and ProPort Casing - 3" Class 150 ANSI Opposite	PDF

K-KK with RV and ProPort Casing - 3" Class 250/300 ANSI RH/LH	PDF	STEP

K-KK with RV and ProPort Casing - DIN 50 PN16 Opposite	PDF

K-KK with RV and ProPort Casing - DIN 65 PN16 Opposite	PDF

K-KK with RV and ProPort Casing - DIN 80 PN16 Opposite	PDF

L Plain Head and ProPort Casing - 3" Class 250 ANSI RH/LH	PDF	STEP

L Plain Head and ProPort Casing - 4" Class 125/150 ANSI RH/LH	PDF	STEP

L Plain Head and ProPort Casing - 4" Class 250/300 ANSI RH/LH	PDF	STEP

L with ProPort Casing - 2" NPT Opposite	PDF

L with ProPort Casing - 2.5" Class 150 ANSI Opposite	PDF

L with ProPort Casing - 2.5" Class 150 ANSI RH/LH	PDF	STEP

L with ProPort Casing - 2.5" Class 300 ANSI Opposite	PDF

L with ProPort Casing - 2.5" Class 300 ANSI RH/LH	PDF	STEP

L with ProPort Casing - 3" Class 150 ANSI Opposite	PDF

L with ProPort Casing - 3" Class 150 ANSI RH/LH	PDF	STEP

L with ProPort Casing - 3" Class 300 ANSI Opposite	PDF

L with ProPort Casing - 4" Class 150 ANSI Opposite	PDF

L with ProPort Casing - 4" Class 300 ANSI Opposite	PDF

L with ProPort Casing - DIN 100 PN16 Opposite	PDF

L with ProPort Casing - DIN 65 PN16 Opposite	PDF

L with ProPort Casing - DIN 80 PN16 Opposite	PDF

L with Relief Valve and ProPortâ„¢ Casing - DIN 80 PN16 Flanges RH/LH	PDF

L with RV and ProPort Casing - 2" NPT Opposite	PDF

L with RV and ProPort Casing - 2.5" Class 150 ANSI Opposite	PDF

L with RV and ProPort Casing - 2.5" Class 150 ANSI RH/LH	PDF	STEP

L with RV and ProPort Casing - 2.5" Class 300 ANSI Opposite	PDF

L with RV and ProPort Casing - 2.5" Class 300 ANSI RH/LH	PDF	STEP

L with RV and ProPort Casing - 3" Class 150 ANSI Opposite	PDF

L with RV and ProPort Casing - 3" Class 150 ANSI RH/LH	PDF	STEP

L with RV and ProPort Casing - 3" Class 250/300 ANSI RH/LH	PDF	STEP

L with RV and ProPort Casing - 3" Class 300 ANSI Opposite	PDF

L with RV and ProPort Casing - 4" Class 125/150 ANSI RH/LH	PDF	STEP

L with RV and ProPort Casing - 4" Class 150 ANSI Opposite	PDF

L with RV and ProPort Casing - 4" Class 250/300 ANSI RH/LH	PDF	STEP

L with RV and ProPort Casing - 4" Class 300 ANSI Opposite	PDF

L with RV and ProPort Casing - DIN 100 PN16 Opposite	PDF

L with RV and ProPort Casing - DIN 65 PN16 Opposite	PDF

L with RV and ProPort Casing - DIN 80 PN16 Opposite	PDF

LL Plain Head and ProPort Casing - 4" Class 250/300 ANSI RH/LH	PDF	STEP

LL with Plain Head and ProPort Casing - 4" ANSI Flanges Opposite	PDF

LL with Plain Head and ProPort Casing - 4" ANSI Flanges Opposite	PDF

LL with ProPort Casing - 3" Class 150 ANSI Opposite	PDF

LL with ProPort Casing - 3" Class 150 ANSI RH/LH	PDF	STEP

LL with ProPort Casing - 3" Class 300 ANSI Opposite	PDF

LL with ProPort Casing - 3" Class 300 ANSI RH/LH	PDF	STEP

LL with ProPort Casing - 4" Class 150 ANSI RH/LH	PDF	STEP

LL with ProPort Casing - DIN 100 PN16 Opposite	PDF

LL with ProPort Casing - DIN 65 PN16 Opposite	PDF

LL with ProPort Casing - DIN 80 PN16 Opposite	PDF

LL with RV and ProPort Casing - 3" Class 150 ANSI Opposite	PDF

LL with RV and ProPort Casing - 3" Class 150 ANSI RH/LH	PDF	STEP

LL with RV and ProPort Casing - 3" Class 300 ANSI Opposite	PDF

LL with RV and ProPort Casing - 3" Class 300 ANSI RH/LH	PDF	STEP

LL with RV and ProPort Casing - 4" ANSI Flanges Opposite	PDF

LL with RV and ProPort Casing - 4" ANSI Flanges Opposite	PDF

LL with RV and ProPort Casing - 4" Class 150 ANSI RH/LH	PDF	STEP

LL with RV and ProPort Casing - 4" Class 250/300 ANSI RH/LH	PDF	STEP

LL with RV and ProPort Casing - DIN 100 PN16 Opposite	PDF

LL with RV and ProPort Casing - DIN 65 PN16 Opposite	PDF

LL with RV and ProPort Casing - DIN 80 PN16 Opposite	PDF

LS Plain Head and ProPort Casing - 4" Class 125/150 ANSI RH/LH	PDF	STEP

LS with ProPort Casing - 3" Class 150 ANSI Opposite	PDF

LS with ProPort Casing - 3" Class 150 ANSI RH/LH	PDF	STEP

LS with ProPort Casing - 3" Class 300 ANSI Opposite	PDF

LS with ProPort Casing - 3" Class 300 ANSI RH/LH	PDF	STEP

LS with ProPort Casing - 4" ANSI Opposite	PDF

LS with ProPort Casing - 4" Class 300 ANSI Opposite	PDF

LS with ProPort Casing - 4" Class 300 ANSI RH/LH	PDF	STEP

LS with ProPort Casing - DIN 100 PN16 Opposite	PDF

LS with ProPort Casing - DIN 80 PN16 Opposite	PDF

LS with RV and ProPort Casing - 3" Class 150 ANSI Opposite	PDF

LS with RV and ProPort Casing - 3" Class 150 ANSI RH/LH	PDF	STEP

LS with RV and ProPort Casing - 3" Class 300 ANSI Opposite	PDF

LS with RV and ProPort Casing - 3" Class 300 ANSI RH/LH	PDF	STEP

LS with RV and ProPort Casing - 4" Class 125/150 ANSI RH/LH	PDF	STEP

LS with RV and ProPort Casing - 4" Class 150 ANSI Opposite	PDF

LS with RV and ProPort Casing - 4" Class 250/300 ANSI RH/LH	PDF	STEP

LS with RV and ProPort Casing - 4" Class 300 ANSI Opposite	PDF

LS with RV and ProPort Casing - DIN 100 PN16 Opposite	PDF

LS with RV and ProPort Casing - DIN 80 PN16 Opposite	PDF

Q with ProPort Casing - 4" Class 150 ANSI RH/LH	PDF	STEP

Q with ProPort Casing - 4" Class 300 ANSI RH/LH	PDF	STEP

Q with ProPort Casing - 6" Class 150 ANSI Opposite	PDF

Q with ProPort Casing - 6" Class 300 ANSI Opposite	PDF

Q with ProPort Casing - DIN 150 PN16 Opposite	PDF	STEP

Q with RV and ProPort Casing - 4" Class 150 ANSI RH/LH	PDF	STEP

Q with RV and ProPort Casing - 4" Class 300 ANSI RH/LH	PDF	STEP

Q with RV and ProPort Casing - 6" Class 150 ANSI Opposite	PDF

Q with RV and ProPort Casing - 6" Class 300 ANSI Opposite	PDF

Q with RV and ProPort Casing - DIN 150 PN16 Opposite	PDF	STEP

QS with ProPort Casing - 6" Class 150 ANSI Opposite	PDF	STEP

QS with ProPort Casing - 6" Class 300 ANSI Opposite	PDF	STEP

QS with RV and ProPort Casing - 6" Class 150 ANSI Opposite	PDF	STEP

QS with RV and ProPort Casing - 6" Class 300 ANSI Opposite	PDF	STEP

Industrial

Energy

Hygienic