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.
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
| Type | CHEMSPIN 70ES | CHEMSPIN 90ES | CHEMSPIN 125ES |
| 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 | ||
| 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 or with free shaft end | ||
| Drives | Three-phase, gear, or servo-motors (hygienic stainless steel drives as an option) | ||