Miniature valves keep aggressive fluids isolated
An
Asco Numatics product story
Edited by the Engineeringtalk editorial team
Nov 28, 2005
New miniature fluid isolation valves are designed to control acids and basic fluids and reagents in applications where the fluid must be completely separated from the valve control mechanism.
Asco Scientific's new 110 Series of miniature fluid isolation valves is designed to control acids and basic fluids and reagents in applications where the fluid must be completely separated from the valve control mechanism.
Rated for a minimum of 1 million cycles operating life, the Series 110 valves are designed high levels of reliability in equipment such as medical and gas analysers and also biotechnology operations.
The 110 Series are direct acting type valves, a design that enables hermetic separation between the fluid and valve parts to prevent contamination, and also ensures reduced heat exchange between the valve coil and fluid.
Ideal for both shutoff and fluid diversion tasks, the 110 Series valves are available in both 2/2 normally closed and open versions and also 3/2 universal types.
The 110 series achieves high levels of reliability via a direct acting rocker design, which is both highly efficient and ensures a very small internal volume within the valve to deliver maximum accuracy in analytical operations.
In addition, the combination of the stainless steel rocker mechanism and an EPDM diaphragm poppet means that no metal parts that could cause contamination come into contact with the fluid.
To enable them to resist the corrosive mediums with which they are used, the 110 Series valves have Trogamid bodies and covers: the latter being transparent, enabling the flow of fluid within the valve to be observed.
In addition all internal valve parts, excepting the diaphragm poppet, are manufactured from stainless steel.
Integration of the 110 Series into analytical machines is simplified by the availability of plain, push-on connections for flexible tubing.
Electrical connection is also simplified by the use of spade connectors on the valves moulded solenoid coil.
The coils themselves offer the reliability benefits of class F installation, and the bonus for mobile use of operation on both 12 and 24V DC.
In addition to providing the Series 110 valves as discrete units, Asco Scientific also provides the valves as a pre-assembled system, mounting up to five of them on support plates.
This is part of wider service designed by Asco Scientific to provide bespoke multifunction modules for use in application areas such as dentistry, microbiology, analysis and respiratory control.
This approach, with assemblies designed and delivered as fully functional units, both reduces costs and speeds up the overall construction time of the equipment to which the pre-engineered systems are applied.
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