Product category:
Process and OEM Valves
News Release from: Bio-Chem Valve and Omnifit | Subject: Custom-designed rotary valves
Edited by the Engineeringtalk Editorial
Team on 22 August 2003
Custom valves solve high-viscosity
problems
Custom-designed rotary valves from Omnifit have helped the manufacturer of a DNA analysis instrument solve a seemingly intractable problem.
Custom-designed rotary valves from Omnifit have helped the manufacturer of a DNA analysis instrument solve a seemingly intractable problem The instrument, which uses very high viscosity fluids, needed inert valves with sufficient sheer force to cut through the fluid, acting as shut off valves
This article was originally published on Engineeringtalk on 3 Apr 2003 at 8.00am (UK)
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New from Omnifit is a range of large manual rotary distribution valves for high-precision gas and fluid control in laboratory equipment and analytical instruments.
Solenoid valves were found to have insufficient force for the exacting application.
The solution from Omnifit was a 1mm-bore custom-designed rotary valve with a stainless-steel rotor for torsional strength, a Tefzel liner for chemical inertness, and a Peek body for rigidity.
The shape of the rotor was carefully profiled to give a clean cut through the fluid ensuring an instant start/stop to the flow.
The valve can operate up to very high pressures (1000lb/in2) and is controlled by TTL or RS232 protocols.
Optical encoders are used to provide precise port positioning, enabling maximum flow of the fluid every time.
The valve was designed to specifically meet the user's performance requirements, with initial proposals being followed by prototypes for the customer to test.
In order to meet US FDA validation requirements, extended life testing was undertaken by Omnifit and, once the final design was agreed, the valves were manufactured to meet the user's Kanban delivery requirements.
Omnifit, one of the world's leading manufacturers of inert fluid transfer components, can design, prototype and manufacture manual and electric valves, bottle caps, tubing sets and chromatography columns for many different analytical and biotechnology instrumentation applications.
The company can deliver to schedule, Kanban or JIT requirements.
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