Jung Process Systems GmbH
Auweg 2 · 25495 Kummerfeld
Tel. +49 4101 7958-140 · Fax +49 4101 7958-142
info@jung-process-systems.de · www.jung-process-systems.de

Twin-screw pumps

Twin-screw pumps

CHEMSPIN ES – the 3-in-1 solution: Infeed, conveying, and cleaning

The CHEMSPIN ES is a special version of the stainless steel CHEMSPIN pump series. The innovative twin-screw pump with hopper opening is able to handle products with viscosities up to 5000 mPa·s without problems. Its screws are extended at the inlet, so that non-flowable products are drawn in below the inlet opening (like an extruder) and fed to the pump chamber. As a result, external feeding devices are not necessary in many cases. Moreover, product feed is much gentler in this way.

Consequently, the CHEMSPIN ES represents a very attractive 3-in-1 solution: Infeed, conveying, and cleaning are carried out in a single unit. It is available in the sizes 70, 90 and 125.

You have questions?
We will be happy to advise you.

+49 4101 80409-0

Herausforderung: Entgasen von Säften mit Fasern und Pulpen in der Getränkeindustrie

Henning Grönwoldt-Hesse

Advantages at a glance
  • Self-feeding properties
    The lengthened feed screws are able to draw in viscous products like a screw conveyor. As a result, external feeding devices are not necessary in many cases.
  • Very high flexibility
    Many different products and a wide range of flow quantities and viscosities can be handled by a single pump. Reverse operation is possible – the range of different pumps in a plant can be reduced considerably.
  • Safe operation
    Loaded, abrasive or lumpy media can be conveyed – a suitable shaft seal can provide dry-run protection. Very low vibration and noise levels.
  • Self-priming, able to handle entrained gas
    Outstanding suitability for emptying & transfer pumping operations.
  • High chemical resistance
    The CHEMSPIN is made of 1.4404 stainless steel as standard. Hardened pumping elements and contactless operation ensure high wear resistance.
Technical data / performance features





Max. capacity

10 m³/h

25 m³/h

70 m³/h

Max. delivery pressure

20 bar

25 bar

25 bar

Max. ø of solids

20 mm

30 mm

45 mm

Suction capacity

NPSHr >0.5 m, suction heights up to 9 m possible


0.5 to 1 000 000 mPa·s, higher values after consultation

Pumping temperature

-10 to 180 °C, higher values on request


full CIP cleaning in the plant


SIP in the plant with steam or hot water

Product-wetted parts

Choice of 1.4404, 1.4539, or 1.4462 – other materials on request


HNBR, FPM, EPDM, FFPM, FDA approval, other elastomers on request

Shaft seals

Single and double-acting floating ring seals, with knife edge for sticky media to prevent start-up damage, single-acting, dry-run safe lip seal

Pump orientation

horizontal, vertical, or sideways (INLINE versions possible)


Different sizes and connecting standards after agreement


Compact, robust modular design or with free shaft end


Three-phase, gear, or servo-motors (hygienic stainless steel drives as an option)


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