Concept SQ Rotary Lobe Pump

Johnson Pump Concept SQ Rotary Lobe Pumps

The Concept SQ is the definitive pump for critical hygiene applications and those requiring aseptic, sterile or clean process environments.

The Concept SQ rotary lobe pump uniquely offers specification flexibility combining sterile barriers with front-loading single or double mechanical seals, external rotor fixing, AISI 316L contact parts and superb self-draining characteristics. As a result, the range delivers benchmark CIP and SIP performance, together with the simplicity of maintenance to assure minimum downtime. Together, these features deliver tremendous operational benefits across a broad spectrum of applications.

From the start, the SQ range was designed to eliminate potential product-retaining areas in the flow path through the pump and, where required, to provide the facility for permanent sterile barriers at all product/atmosphere interfaces.

Whether your requirement is simply for CIP to a standard not achieved by existing designs or the extreme cleanliness demanded by biotechnology processes, this formidable combination of features allows Concept SQ to maintain the specified environment with exceptional reliability and efficiency.

The European Hygienic Engineering Design Group (EHEDG) is an EEC "QUANGO" (Quasi-autonomous non-governmental orqanisation) sponsored by many of the major food and pharmaceutical process equipment manufacturers. The EHEDG sets the safety and cleanliness standards for process plant and equipment.

The Concept SQ was tested at the Campden and Chorleywood Food Research Association, an independent research laboratory in England. The Concept SQ was the first rotary lobe pump to have been certified by this organisation.

Typical Applications


  • Baby foods
  • Dairy products
  • Fruit juices
  • Low-fat spreads
  • Yoghurts
  • Ice creams

Personal Hygiene Products

  • Lotions
  • Moisturisers
  • Cosmetics
  • Aqueous emulsions
  • Actives
  • Hair care products


  • Fermentation cell broths
  • Pyrogen-frcc liquids
  • Intermediates
  • Antibodies
  • Micro-organisms for containment


  • Sterile injectables
  • Aqueous creams
  • Ointments
  • Vaccines
  • Blood products
  • Sterile sugars