Features/Benefits 
Excellent self-priming ability 
• No non-return valve required in the inlet 
• Single unbalanced/balanced seals to EN 12756 (DIN 24960) 
• Mechanical seal with dry-running protection through oil bath quench 
• Ideal for handling contaminated liquids 
• Easy maintenance – Back-Pull-Out principle 
• Flanges 32 and 40 threaded connection 
• Flange connection 50 and higher to ISO 7005 PN 16 
• Flange connection to ISO 7005 PN 20 (ANSI B16.5 150 lbs) optional 
• Greased for life roller bearings 
• Magnetic drive optional
• Atex certification

Features/Benefits 
Centrifugal pumps have a large application field and among 
Johnson Pump’s most important segments can be mentioned: 
• Industry For all types of applications demanding standardised, 
DIN-normed pumps 
• Hygienic For Food, Pharmaceuticals and Biotechnology 
• Water handling For irrigation, drainage and fresh water 
• Chemical/petrochemical For transport of slightly contaminated
thin liquids 
• Greenhouse For heating, distribution of artificial fertilisers,
irrigation and drainage 
• Marine For bilge pumping, engine cooling and as ballast pumps

Features/Benefits 
• Compact and modular design 
• Mechanical seal as standard 
• Back-Pull-Out construction for easy maintenance 
• Single and double speed execution available 
• Shaft does not come into contact with pumped liquid 
• Radial, closed impeller 
• Special designed low NPSH suction inlet casing 
• Vertical and horizontal mounting 

Features/Benefits 
• Compact, space saving construction 
• Economic design 
• Back-Pull-Out construction for easy maintenance 
• High pump efficiency 
• Suitable for a wide range of duties 
• Self-venting pump casing (horizontal execution) 
• Easy maintenance 
• Low maintenance cost 
• Suitable for vertical arrangement 
• Standard mechanical shaft seal EN 12756 (DIN 24690) 

TopGear

 
TopGear H3


TopGear G

Gear pumps are used in all types of manufacturing
industries for the transportation of both thin and 
thick liquids, from choccolate to diesel fuel. 
Our gear pumps have sturdy design, offering high
reliability as well as long life 

Features/Benefits 
• Adjustable clearances Optimised efficiency 
• Flange connection options (DIN, ANSI) 
• Hard metal bearings and shafts available Long service life 
• Front and back pull-out design Less maintenance downtime 
• Big ports Low NPSHreq. Improved priming ability
Suitable for Pure or filled bitumen, pitch, diesel oil, crude oil,
lube oil, sodium silicate, acids, plastics, mixed chemicals,
isocyanates, paint, ink, resins, adhesives, acids, soap, lye,
kaolin, black liquor, lime, latex, sludge, chocolate, 
cacao butter, fillers, sugar, vegetable fats and oils,
molasses and animal feed.
Technical data
General for G-series. 
Casing: Cast iron 
Idler and rotor: Nodular iron, Stainless steel 
Max. differential pressure: 16 bar 
Max. temp: 300?C 

.

The TopLobe-series is available in 12 different sizes. 
Shaft seal options include single and double mechanical 
as well as lip seals. Multi-foot for vertical or 
horizontal mounting. Heating/cooling systems
for front cover. Built-on safety relief valves 
as an option. Connections from 20 mm to 150 mm

Features/Benefits 
• Simple,clean and robust construction 
Hygienic, minimum risk of product entrapment, 
easy to clean either by CIP, SIP or manually,
short cleaning downtimes 
• Easy maintenance 
Easy service and maintenance,
simple gearbox construction 
• Gentle product handling 
Traditional tri-lobe design gives gentle handling, 
low pulsation and capability of handling particles 
• Large selection of shaft seals 
Easily interchangeable with other seal types,
short downtimes 
• Shim-free, oil lubricated gearbox 
Easy to service, longer life

The TopWing-series is available in 8 different sizes. 
Shaft seal options include single mechanical, quenched, 
double flushed, O-ring. Feet for vertical or horizontal mounting. 
Safety relief valves are available built-on or separately.
Pre-heating/cooling devices in front cover and/or at the seals.
Connections from 25 mm to 100 mm.

Features/Benefits 
• Superior hygiene 
Self-draining rotorcase and mechanical seal assembled 
in the liquid. Low carbon stainless steel with smooth 
surfaces. Easy to clean – CIP, SIP or by hand, with 
a minimum of entrapped liquid. 
• Easy maintenance 
Front-loaded product seals and robust bearing
assembly without shimming. 
• Gentle product handling 
Bi-Wing rotors with small clearances give a smooth 
flow with little backslip. Able to handle particles. 
• Large selection of shaft seals 
Easily interchangeable with other 
seal types, short downtimes 
maximum 5 to 10 minutes. 
• Integrated shaft and gear design 
The complete pump is made in stainless steal. 
The shaft bearings are integrated into the rotorcase. 
Large shaft diameters and strong bearing design
results in small shaft defections and allows to have 
small clearances inside hydraulic part. 
The use of duplex steel for the rotors increases 
wear resistance and improve behaviour on higher
temperatures. 

Closed coupled magnetic drive horizontal centrifugal pump to
ISO 5199 and ISO 2858 /EN 22858 

Features/Benefits 
• 100% leakfree 
• Long life cycle, reduced maintenance costs 
• Flanges according to ISO 7005 PN 16 
• For stainless steel execution ISO 7005 PN20 /
150 lbs ANSI B 16.5 available 
• Outstanding hydraulic performance 
• High efficiency impeller 
• Closed impeller with back vanes providing axial balancing 
of impeller loads 
• Half open impeller with wear plate 
• Easy maintenance through the Back-Pull-Out principle 
• Atex certification 
• Outer rotor with safety bearing 
• Somarium Cobalt high performance magnets 
• Containment can in Hastelloy? for limited eddy current losses 
• Silicon carbide pump liquid lubricated internal bearings 
• Heating jackets optional 
• Grease or oil bath lubricated bearings 
• PT 100 temperature monitoring 
• Interchangeable with existing ISO 2858 pumps

Self-priming centrifugal pumps
EN 733 (DIN 24255)
 


combiprime H

combiprime v

Features/Benefits 
• Standardized and modular design 
• Self-priming 
• Built-in vacuum pump with external adjustment 
• Large air displacement capacity, shortening suction times 
• Flanges according to ISO 7005 PN 16 
• Outstanding hydraulic performance 
• High efficiency impeller 
• Closed impeller with back vanes providing axial balancing 
of impeller loads 
• Mechanical seals to EN 12756 (DIN 24960) 
• 2-Angular contact thrust bearings and cylindrical roller bearing 
• Robust shaft design 
• Extended life time 
• Atex certification 
• Easy maintenance through the Back-Pull-Out principle 
• Sea water resistant version available 
• Available in horizontal and vertical execution

Mag Drive seal-less centrifugal pumps are 
virtually leak-proof since the design eliminates
the multitude of problems related to shaft seals 
and packings. 

Features/Benefits 
• No leaking shafts Improved safety 
• High corrosion resistance Wide range of applications
• Standard electric motors Simple and inexpensive replacement 
• Reliable in performance Less down-time 
• Simple design Easy maintenance 
Suitable for
Sulphuric acid, caustic, sodium hydroxide, developer, 
fixing bath, bleaching agent, various other chemicals
Technical data 
Casing: PP filled with glass fibre, PVDF with carbon fibre 
Impeller: PP filled with glass fibre, PVDF with carbon fibre 
Max. capacity: 30 m3/h 
Max. delivery head: 24 m 
Max. liquid temp: 85?C for PP, 100?C for PVDF 
Max. system pressure: 3 bar at 20? C 
Max. speed: 2 800 rpm

The range of multistage pumps includes a series 
of horizontal pump, MCH, and a range of vertical pump,
MCV. The horizontal types can also be supplied 
in a self-priming version, MCHZ. 

Features/Benefits 
• Rigid, reliable construction 
• High pump efficiency 
• Low maintenance cost 
• Mechanical seal or gland packing
• Atex Certification

Robust centrifugal pump for liquids containing solids 

Features/Benefits 
• Can handle solids 
• Vortex technology 
• Prevent clogging 
• Standardized and modular design 
• Flanges according to ISO 7005 PN 16 
• Available in horizontal and vertical execution 
• Self-priming option available 
• Atex certification 
• Handle liquids with varying amounts of gas 
• Impeller with back vanes providing solids kept away from 
shaft sealing area 
• Easy maintenance through the Back-Pull-Out principle 
• Single unbalanced / balanced seals to EN 12756 (DIN 24960) 
• Single and double cartridge seals with seal support system 
• Quenched shaft sealing 
• Gland packing 
• Dry-shaft design, pumped liquid not in contact with the shaft 
• Robust shaft design 
• Extended life time 
• Double row angular contact thrust bearing and cylindrical 
roller bearing 
• Grease or oil bath lubricated bearings 
• In vertical execution many mounting options (floor, bulkhead) 
• In vertical execution eight positions possible between suction 
and delivery connections

Vertical centrifugal pump to EN 733 (DIN 24255)

Features/Benefits 
• Standardized and modular design 
• Compact design 
• Flanges according to ISO 7005 PN 16 
• Many mounting options (floor, bulkhead, wall mounting) 
• Eight positions possible between suction and 
delivery connections 
• Outstanding hydraulic performance 
• High efficiency impeller 
• Closed impeller with back vanes providing axial balancing 
of impeller loads 
• Spacer-coupling option for easy maintenance 
• Easy maintenance through the Top-Pull-Out principle 
• Mechanical seal to EN 12756 (DIN 24960) 
• Atex certification 
• Dry-shaft design, pumped liquid not in contact with the shaft 
• Robust shaft design 
• Extended life time 
• 2-Angular contact bearing 
• Bearing bracket option allows a wide range of shaft seals 

A sump pump designed to 
EN 733 (DIN 24255), ISO 5199 - ISO 2858 
/ EN 22858, API 610 / API 682 

Features/Benefits 
• Standardised and modular design 
• Customized sump depths up to 10 m 
• Outstanding hydraulic performance 
• High efficiency impeller 
• Closed impeller with back vanes providing axial balancing
of impeller loads 
• Half open impeller with wear plate and external adjustment 
• Oil seal standard shaft sealing. Gas tightening option 
by mechanical seal or Gland Packing 
• Discharge flange according to ISO 7005 PN16, PN20, PN50
or ANSI B16.5 150 lbs, 300 lbs 
• Atex certification 
• Pumped liquid lubricated silicon carbide radial bearings 
• External lubrication optional 
• Heavy duty grease lubricated double row angular contact 
bearing for axial loads 
• Standard IEC flange motor 
• Mounting plate vapor tight or pressurized design 
• Rectangular or circular mounting plate 
• API 610 / API 682 execution engineered for hydrocarbon 
and petrochemical processing industries 

Vertical sump pump to EN 733 

Features/Benefits 
• Compact standardized and modular design 
• No shaft sealing 
• Flanges according to ISO 7005 PN 16 
• For stainless steel execution ISO 7005 PN20/150 lbs 
ANSI B 16.5 available 
• Outstanding hydraulic performance 
• High efficiency impeller 
• Closed impeller with back vanes providing axial balancing 
of impeller loads 
• Liquid lubricated slide bearing 
• Standard IEC flange motor 
• Atec certification