Asco Scientific has produced a new catalogue covering its comprehensive range of specialist miniature solenoid and pneumatic valve products for use in medical, biomedical and analytical applications
Running to over 80 pages, and including eleven sections, the new Medical and Analytical catalogue from Asco Scientific describes a range of products designed to provide solutions where standard products are unsuitable.
It includes miniature products such as pinch valves for contamination free operation, fluid isolation valves for controlling aggressive fluids, miniature directional control valves, and a series of proportional valves that includes piezo types, with non heating characteristics, to full closed loop versions in port sizes up to G1".
The new catalogue also highlights how these products can be integrated by Asco Scientific to provide bespoke multi-function 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.
The Medical and Analytical catalogue details four types of pinch valves, all of which are designed for applications where fluids, including corrosives, need to be isolated from the valves' moving parts.
Low power, direct acting, two and three way NO or NC types, the pinch valves are intended to provide sterile conditions in medical analyser, biotechnology and chromatography applications.
Complementing the pinch valve information is comprehensive data regarding Asco Scientific's fluid isolation valves.
These are designed for use in medical analysers, biotechnology and gas analysers, and with corrosive fluids such as acids, bases and analytical reagents.
In view of their stringent operating conditions, the valves are direct acting types, with hermetic separation between the fluid and valve parts to prevent contamination.
Also included in the new catalogue is Asco Scientific's range of miniature direct acting solenoid valves: described as the ideal building blocks for use in bespoke control manifolds of the type used in dentistry, microbiology and chemical analytical systems.
The valves meet today's market requirements for more compact, lower power (1W min) and low cost valves.
Both two-way and three-way versions are provided, all employing plastic bodies and internal parts of brass and stainless steel.
The modular construction of the valves provides great flexibility with M3 threaded bodies and M3 and M5 sub-bases all being available.
Completing the list of valve products included in the new Medical and Analytical catalogue is one of the most comprehensive ranges of proportional valves available.
Providing variable flow, which is proportional to a control signal, these valves are employed in medical applications such as endoscopy, where a proportional valve block controls the flow of CO2 used to enlarge the operating area for endoscopic surgery.
Asco Scientific's Sentronic proportional valves are also used in tandem to control the flow of blood through artificial hearts, by alternatively applying pressure or vacuum.
In another application, micro injection of aqueous solutions into living cells, Asco Joucomatic's Piezotronic valve is providing precise control with extremely low power consumption (0.007W) and practically unlimited service life (of >1billion cycles).
The Piezotronic is ideal for this application as its low power consumption means that there is no heat transfer from the valve into the fluid, a condition that could otherwise spoil the process.