Stainless steel chemical pumps for use in ATEX areas

CHEMSPIN ATEX twin screw pumps -

Flexible, universal, and safe for potentially explosive areas

CHEMSPIN twin screw pumps can also be used in ATEX zones 1, 2, 21, and 22. Depending on the pumping temperature, temperature classes T2 to T4 can be achieved. The contactless delivery principle is advantageous here. The CHEMSPIN ES with extended feed screws can also be supplied as an ATEX version.

CHEMSPIN twin screw pump for use in Atex areas

Technical Parameters
Advantages
Variants
Applications
Request pump

The ATEX concept consists of the following measures:

Use of pressure-resistant encapsulated motors for speed control
Monitoring of surface temperatures by sensors on the pump housing and bearing bracket
Ensuring seal temperatures through a monitored flushing system for double-acting mechanical seals
Prevention of dry running through monitoring of single-acting mechanical seals
Breakthrough couplings or spark suppression by couplings in oil bath
Non-sparking contact protection for base plate units
Grounding connections for potential equalization

Units that are safe-to-run dry or dry run safe can be supplied with the appropriate shaft seals.

Technical parameters

The CHEMSPIN ATEX is available in sizes 50, 70, 90, 105, and 125 and has been developed for use in potentially explosive atmospheres. The maximum pumping volume is approx. 300 m³/h. The delivery pressure is up to 35 bar.

Download catalog

Technical Parameters Sizes CHEMSPIN ATEX

Type	CHEMSPIN 50	CHEMSPIN 70	CHEMSPIN 90	CHEMSPIN 105	CHEMSPIN 125
Max. flow rate	20 m³/h	40 m³/h	100 m³/h	180 m³/h	300
Max. delivery pressure	20 bar	25 bar	30 bar	20 bar	35 bar
Max. ø solids	16 (25) mm	20 (30) mm	28 (45) mm	35 mm	46 (64) mm

General Specifications CHEMSPIN ATEX

Suction capacity		NPSHr > 0.5 m, suction heads up to 9 m possible
Viscosity		0.5 - 1,000,000 mPa s, higher values upon consultation
Pumping temperature		–10 to 180 °C, higher values on request
Cleaning		Fully CIP-cleanable in the system
Sterilization		SIP in the system with steam or hot water
Parts that come into contact with the product		1.4404, 1.4539, or 1.4462 as an option, other materials on request
Elastomers		HNBR, FPM, EPDM, FFPM, FDA approval, other elastomers on request
Shaft seals		Single- and double-acting mechanical seals, with knife edge for sticky media to prevent start-up damage, single-acting mechanical seal that is safe to run dry, lip seal
Pump orientation		horizontal, vertical, or lateral, INLINE versions possible
Connections		Various sizes and connection standards upon agreement
Design		Compact, robust modular design for all sizes, with free shaft end for sizes 50, 70, 90, 105 and 125
Drives		Three-phase, gear, or servo motors (hygienic drives in stainless steel design as an option)

The advantages at a glance

Icon_Advantage_Twin_Screw_Pump_wear_resistance

Durability

The CHEMSPIN is manufactured from 1.4404 stainless steel as standard. Hardened conveyor elements and contact-free operation result in high wear resistance.

Icon_Advantage_Twin_Screw_Pump_gas-laden liquid

Gas carrying

Self-priming, gas-pumping. Excellent suitability for unloading and transfer operations.

Icon_Advantage_Twin_Screw_Pump_reduced_footprint

Space requirements

The opposite connection positions make it easier to integrate the pumps into existing systems.

Flexibility

A wide variety of products and a broad range of quantities and viscosities can be covered with just one pump. Reverse operation is possible, greatly reducing the variety of pumps required within a system.

Icon_Advantage_Twin_Screw_Pump_low_caitation

Cavitation

The NSPH values of the CHEMSPIN are very low. This applies to the entire operating range, including operating points close to zero flow. Increasing speeds and viscosities have only a minor influence.

Safe operation

Loaded, abrasive, or lumpy media can be pumped; with a suitable shaft seal, the system is safe-to-run dry or can operate in a dry run mode. Very low vibration and noise levels.

Other variants

CHEMSPIN STANDARD

The CHEMSPIN is the basic model of the globally proven CHEMSPIN pump series made of high-quality stainless steel.

To the product

CHEMSPIN ES

Compact twin screw pump for chemical and industrial applications

To the product

CHEMSPIN ATEX

CHEMSPIN twin screw pumps can be used in ATEX zones 1, 2, 21 and 22. Depending on the delivery temperature, temperature classes T2 to T4 can be realized.

To the product

CHEMSPIN INLINE

The drop-in replacement solution for replacing other pump technologies. Choice of connections for easy changeover to twin screw pumps.

To the product

Applications

Adhesives

Adhesives mixed with solvents pose a high risk of cavitation in the conveying process. The challenge is that the slightly boiling solvents generally behave differently to the other components.

Underbody protection

Underbody protection is used to preserve vehicles and machines and constantly presents pump manufacturers with new challenges. However, gentle pumping of formulations with sensitive components such as glass beads is not a problem.

Tanks storage /farms

Filling, emptying or circulation pumping are recurring tasks for tank farm operators. Thanks to their high flexibility, screw pumps can handle a wide range of pumping tasks with just one series.

Paints and varnishes

Pulsation-free conveying and filling of colors can be a real challenge. Pigmented colors are usually extremely sensitive and must be conveyed particularly gently so that pigments are not destroyed.