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

Company

From Kummerfeld into the world. At our site northwest of Hamburg, a team of about 100 employees produces and assembles our pumps.

Development Department Job offers Directions

HYGHSPIN Pumps

Highly flexible, our Hygiene HYGHSPIN pumps are established solutions for applications requiring hygienic conditions.

CHEMSPIN Pumps

The multi-talent: From aqueous to highly viscous and abrasive up to gas-laden CHEMSPIN pumps solve a wide range of problems. They are very flexible, and have a low cavitation risk.

Products CHEMSPIN CHEMSPIN ES CHEMSPIN ATEX CHEMSPIN INLINE

Application examples Adhesives Underbody coating Tank farms Paints & lacquers Cleaning agents

Advantages Flexibility Gentle Product Handling Hygiene Level Wear resistance Wear Resistance Serviceability Block Design

Pump Wiki

Discover technical explanations and terminology in our Wiki as well as films about the delivery principles of different pump types.

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Contact

Any questions? Simply contact us or our sales partners directly. We will reply quickly.

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Twin-screw pumps

Twin-screw pumps

CHEMSPIN ATEX – flexible, universal, and safe

CHEMSPIN twin-screw pumps can also be used in ATEX Zones 1, 2, 21, and 22. Hereby, and depending on pumping temperature, temperature classes T2 to T4 can be realised. The contact-free conveying principle is of advantage here. Also the CHEMSPIN ES with lengthened screws is available as an ATEX version.

Hereby, the ATEX concept consists of the following measures:

• Use of flameproof enclosed motors for speed control

• Surface temperature monitoring with sensors on pump housing and bearing supports

• Maintaining seal temperatures by means of a monitored flushing system for double-acting floating ring seals

• Dry running is prevented by monitoring with single-acting floating ring seals

• Non-failsafe couplings or spark suppression using couplings in an oil bath

• Non-sparking contact protection for base plate devices

• Earthing connections for equipotential bonding

Dry-run safe units with corresponding shaft seals can be supplied.

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

+49 4101 80409-0

sales[at]jung-process-systems.de

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

Consulting:
Henning Grönwoldt-Hesse

Compact Jung twin-screw pumps for use in ATEX zones

CHEMSPIN ATEX – flexible, universal, and safe

Compact Jung twin-screw pumps for use in ATEX zones

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

Type	CHEMSPIN 50	CHEMSPIN 70	CHEMSPIN 90	CHEMSPIN 105	CHEMSPIN 125
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
Viscosity	0.5 to 1 000 000 mPa·s, higher values after consultation
Pumping temperature	-10 to 180 °C, higher values on request
Cleaning	full CIP cleaning in the plant
Sterilisation	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
Elastomers	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)
Connections	Different sizes and connecting standards after agreement
Models	Compact, robust modular design for all versions, with free shaft end for sizes 70, 90, and 125
Drives	Three-phase, gear, or servo-motors (hygienic stainless steel drives as an option)

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