Pumps

According to ISO 5199 and ISO 2858/EN 22858 (DIN 24256)

CombiChem is Johnson Pump’s solution for liquid transport in the chemical industry. It is one of the most outstanding pump types of the Johnson Pump Combi-system. The Combi-system is a modular programme of single stage centrifugal pumps with a high degree of interchangeability of parts between the different pump constructions.

CombiChem represents a range of horizontal centrifugal pumps, designed to ISO 2858/EN 22858 (DIN 24256), suitable for handling low viscosity, clean or slightly contaminated liquids.

The design of CombiChem complies entirely to ISO 5199. The CombiChem offers a great variety of possible shaft sealings, bearing constructions and also a wide range of different materials, such as stainless steel, bronze, nodular cast iron or cast iron.

A leakfree version of the CombiChem is the CombiMag, a magnetic coupled centrifugal pump, especially developed for the chemical industry.

Features

• Suitable for a wide range of duties
• Available in several materials
• Only 4 bearing brackets for the whole range
• Mechanical seals according to EN12756 (DIN24960)
• Single and double cartridge seals
• Back Pull Out principle

TopLobe
Rotary Lobe Pumps

Johnson Pump has developed the TopLobe, a rotary lobe pump with radical design improvements for faster maintenance and easier, more effective cleaning, leading to less process downtime. TopLobe is designed to handle the most demanding applications in today's processing industries.

Typical characteristics

• Front loading seals
• Smooth flow
• Gentle product handling
• Dry running ability
• Efficient transport and dosing
• Handle low and high viscosity products
• Outstanding operational and application qualities 
• High availability and efficiency
• Simple maintenance
• Hygienic design
• Low sound level
• EN-standard seals

FreFlow –
Self-priming centrifugal pumps for various applications

SPX Process Equipment has many years experience in designing, manufacturing and maintaining self priming centrifugal pumps for contaminated liquids. On the  basis of this experience, the FreFlow pumps were developed to cover a broad field of applications. High priority has been given to the design ensuring easy operation and amazing reliability.

Typical characteristics

• Excellent self-priming ability
• No non-return valve required in inlet
• Oil bath for the mechanical seal
• Ideal for handling contaminated liquids
• Outstanding qualities for liquids containing gas or air 
• Easy maintenance (back pull-out)
• Easy operation
• Mechanical seals to EN12756 (DIN24960)

Design

• Single stage, end suction centrifugal pumps.
• Main pump dimensions are compatible with DIN 24256 (ISO 2858).
• Single entry, closed type impeller is used.
• Radial vanes are used behind the impellers to lower the pressure and to balance the thrust (axial force).
• The pump and the motor are connected by means of a flexible coupling on a common base plate.
• Maintenance of the pump is very easy.
• The shaft and other rotating parts can be removed without dismantling the suction and the discharge system.
• Since the pump uses many standard parts, spare parts are readily available.
• These pumps are designed so that there is no need for external cooling.
• Due to natural convection the pump temperature decreases towards the roller bearing. 

Technical Specifications

• Capacity Range (m³/h) 10...400
• Head Range (m) 5...100
• Operating Pressure 16
• Operating Temperature (°C) 100...350
• Motor Speed Range (d/d) 1500...3000
• Suction Flange DN 40...DN 125
• Discharge Flange DN 32...DN 100

CombiPrime is a series of self-priming centrifugal pumps, suited for pumping clean or slightly polluted liquids, with low viscosity. The pumps are available in horizontal as well as in vertical construction. The pump’s self-priming ability is performed by a built-in vacuum pump, based upon the liquid ring principle.

Pump characteristics

• Self-priming
• Always ready for direct use
• Available in horizontal or vertical
• Sea water resistant version available 
  
• High pump effciency
• Suitable for a wide span of duties
• Rigid construction
• Back/Top Pull Out principle
• Easy maintenance

CombiNorm
Always the right pump!

The CombiNorm is a centrifugal pump according to EN 733 (DIN 24255). This is one of the most versatile pump types. The pump has a wide range of shaft sealing options, varying from gland packing to balanced cartridge double seal. Standard and heavy duty bearings are available, either grease or oil lubricated. That’s why CombiNorm is always the right pump!

Benefits

• Available in several materials
• Only 5 bearing groups for the whole range 
• Suitable for a wide range of duties
• Mechanical seals according to EN 12756 (DIN 24960) 
• Single and double cartridge seals
• Standard type gland packing
• Back Pull Out principle