Rotary Valve handles wax and aggressive fluids.

Press Release Summary:



Omnifit custom valve, based on 16-port standard inert rotary valve, switches to off position between each port, providing 32 individual positions. Stainless steel rotor and PTFE body are inert to chemicals and stable up to 200°C. Optical encoder accurately positions rotor to maximize flow rates. Integral heater within valve assembly maintains steady temperature of 70°C to allow smooth flow of wax. Valve measures 210 x 140 x 110 mm and has internal flow path of 4 mm dia.



Original Press Release:


Unique 32-Position Valve Creates a High-Performance Solution for a Complex Fluid Transfer Operation


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Boonton, NJ, A manufacturer of a cell analysis instrument required a custom 16-port electrical rotary valve, with four of the ports capable of handling a wax material at 70°C, and the remaining 12 ports required to handle aggressive fluids. The valve required the ability to switch to an 'off' position between each port, resulting in a total of 32 individual positions. In addition, specific dimensional limitations requested by the customer presented additional valve design challenges.

After holding extensive consultations with the client's engineering team to determine specific requirements, Omnifit designed and manufactured prototypes that enabled the customer to undertake validation studies. Omnifit, a designer and manufacturer of specialized inert fluidic components for over 30 years, designed the 32-port custom valve solution based
upon a standard inert rotary valve that features a stainless steel rotor and a PTFE* body that is virtually inert to all chemicals and stable up to 200°C. The soft, characteristic 'cold-flow' under pressure nature of PTFE makes it an ideal sealing material.

Internal 4mn diameter flow paths and an optical encoder for accurately positioning the rotor maximize flow rates. Integral heaters within the valve assembly maintain a steady 70°C temperature to ensure that the wax fluid flows smoothly through the required ports. The valve, measuring 210mm x 140mm x 110mm, is positioned and driven by a 24 volt DC motor using computer-
controlled TTL compatible signals.

Omnifit products, available from Bio-Chem Valve Inc., include bottle caps, fittings, tubing sets, manual and electric valves and chromatography columns.

Bio-Chem Valve, Inc. provides a complete line of precision fluid transfer solutions for instrument manufacturers.

For more information please contact George Gaydos at Bio-Chem Valve Inc., 85 Fulton Street, Boonton, NJ 07005, USA.

www.bio-chemvalve.com.

* PTFE - Polytetrafluoroethylene.

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