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 – the multi-talent

The CHEMSPIN is the basic version of the worldwide proven CHEMSPIN pump series made of high-grade stainless steel. Whether aqueous, highly viscous, lumpy, fibrous, or gas-laden – the CHEMSPIN is suitable for products of practically any consistency, and features utmost efficiency. The particularly service-friendly twin screw pump convinces with a very high suction capacity and a low risk of cavitation. It conveys different products gently and in volumes up to 300 m3/h.

The CHEMSPIN is available in modular form or with free shaft end,

and comes in sizes of 50, 70, 90, 105 and 125. Max. pumping volume is about 300 m³/h. Pumping pressure is up to 35 bar.

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
  • 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.
  • Low cavitation risk
    The CHEMSPIN exhibits very low NSPH values. This applies for the full operating range, also for operating points close to zero throughput. Increasing pump speeds and viscosities only have a limited effect.
  • 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

20 m³/h

40 m³/h

100 m³/h

180 m³/h

300 m³/h

Max. delivery pressure

20 bar

25 bar

30 bar

20 bar

35 bar

Max. ø of solids

16 (25) mm

20 (30) mm

28 (45) mm

35 mm

46 (64) 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 for all versions, with free shaft end for sizes 70, 90, and 125


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


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