Originally Published EMDM May/June 2001
Spotlight on flow control
Fluid-measuring components
Precision fluid-measuring
products including custom needles, probes, and fittings are available in various
geometries, configurations, treads, and point styles. Teflon and steel tubing
in popular gauge sizes is also offered by the company, and custom designs can
be provided upon request. Kloehn Europe Inc., Bonaduz, Switzerland.
Thermal gas mass flowmeters
Flowmeters suited for
gas metering, gas mixing, and process control applications provide a simple
and standard design to minimize engineering effort and cost. The flowmeters
have a low-flow range from 0.010 to 20 L/min, an accuracy of 0.005 L/min, an
analogue output of 0–4 V linear, an RS-232 serial output, and a 4-millisecond
response time. TSI GmbH Aachen, Aachen, Germany.
Ceramic valve parts
Pistons, valves, rotors,
and stators for rotary valves can be custom made from alumina and zirconia ceramics.
The entire production cycle, from processing the powder to manufacturing the
final product, takes place in-house to ensure a high level of quality control.
Maret S.A., Bôle, Switzerland.
Ultraflow couplings
Medical plastic ultraflow couplings designed to facilitate the transfer of biomedia from large-capacity containers and bags can be used in processing applications including media packaging and biopharmaceutical manufacturing. The low-profile couplings have ¾-in. hose barbs and a thumb latch for disconnecting. Fluid path contamination is prevented by shrouded seals, and the twist-to-lock connection guards against accidental disconnects. The couplings will withstand autoclave, EtO, gamma, or E-beam sterilization methods. Colder Products GmbH, Gross Gerau, Germany.
Pressure switches
Miniature, adjustable sensors with activation settings from as low as hundredths of an inch of water up to 20 psig are available for applications that require low pressure to electric interfaces. The miniature sensing switches can be used in oxygen concentrators, inhalers, nebulizers, sphygmomanometers, patient monitors, renal care systems, and other medical equipment for respiration and blood flow or pressure-monitoring tasks. MPL Inc., Pompano Beach, FL, USA.
Manifold systems
Integrated manifold systems provide a fully configured, multidirectional flow control system that permits the use of two- and three-way isolation valves and micropumps on a single manifold. Designed to eliminate problems associated with assembly, the single-piece manifold systems are easily mounted and are pretested for reliability.
Bio-Chem Valve Inc., Boonton, NJ, USA.
Flow instrumentation
Precision flow instrumentation is designed for OEM applications. The company's product line includes machined acrylic and moulded polycarbonate meters, glass tube and electronic flowmeters, optical flow alarms and controllers, and flow control valves. The company's flowmeters are calibrated to primary standards at on-site flow calibration laboratories. Key Instruments, Trevose, PA, USA.
Plastic tubing connectors
Designed for a range of tubing types with IDs between 1/16 and ¼ in., plastic tubing connectors are manufactured from virgin materials. The connectors have a single-barb design that is distinguished by the omission of a parting line on critical sealing surfaces to improve connection. Value Plastics Inc., Fort Collins, CO, USA.
Copyright ©2001 European Medical Device Manufacturer
