Asco Scientific has expanded its ranges of specialist miniature solenoid and pneumatic valve products for use in medical, biomedical and analytical applications. The range includes 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".
Of particular interest 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.
Asco Scientific can also integrate the products 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.
