inch valve: The patented design miniature fluid pump imparts an exceptionally durable syringe valve, non-sticking pinch valve with no-clog flow path for handling solenoid valve aggressive, particulate-laden liquids. For moderate miniature liquid pumps chemical inertness and waste lines where particles may be present.

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mixing valve: Choose from a wide range of configuration electronic metering pump options and performance characteristics to meet solvent usage and desired corrosion resistant solenoid valves radient formation for multiple inlets or outlets.

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miniature check valves:Bio-Chek™ from biochem valve In-line check valves provide a gentle, economical miniature solenoid valve, non-metallic flow path for handling low volume plastic solenoid valves, low flow transfers inert valve without causing backflow or miniature check valve turbulence.

column chromatography liquid - The need for a fully inert fluid path in preparative column chromatography HPLC instruments is satisfied with our line of isolation and mixing valves. These miniature fitting miniature valves provide all-Teflon flow paths, small footprints, and accuracies required of this demanding application. Examples of our valves used in HPLC instruments include a 2-way inert solenoid valve used to act as an off/on miniature fitting waste valve and as a pressure relief to protect an analysis cell.

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Medical Instrumentation laboratory glass bottles - Miniature solenoid valves are used in a wide range of medical instrumentation including dialysis machines and automated slide staining equipment. Specific applications for miniature plastic tube fittings valves include saline wash maintenance for surgery, pinching tubing used in disposable patient kits, and pumping solution away from the areas of patient contact. The plastic compression fittings adaptability of our standard product line allows our valves teflon tubing and fittings to be used in many 'non-standard', high-purity or chemically aggressive applications as well.

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Environmental Analysis plastic barb fittings - The ability to measure and track our surroundings is critical in today's world. Our rotary valves are specified in instruments that measure air and water composition throughout the world rotary direction control valve. Air sampling equipment uses pinch valves to create a vacuum for drawing in air at specific intervals. Particle counters fluidic components, daily environmental monitoring units, and marine biology instrumentation also utilize our solenoid valve technology to achieve accurate measurements.

solenoid metering pumps
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Solenoid Metering Pumps
A Bio-Chem solenoid metering pumps provide an inert path for precise, repeatable dispensing with discreet, fixed output flows for high purity or aggressive fluids. The reliable, low-maintenance Bio-Chem Valve self-priming micro solenoid metering pump replaces pump and valve combinations, or peristaltic pumps.

A new miniature self-priming 5 µL micro pump designed and manufactured by Bio-Chem Valve Inc., provides OEM designers and manufacturers of scientific and electronic instrumentation with compact, reliable, and economical components for handling programmed, precision-controlled micro dispensing of high purity or aggressive fluids.

Operating Instructions:
The diaphragm of the pump is held closed with an internal spring mechanism. When voltage is applied, the solenoid coil becomes energized and pulls the diaphragm open. This opening action causes fluid to be drawn into the pump chamber. The fluid is dispensed from the pump when the voltage is dropped enough to de-energize the coil and allow the internal spring to force the diaphragm back to the closed position. To operate the pumps:
  1. The pumps require a square wave signal. For ideal dispense properties, provide a 12 volt signal (or 24 volt for 24 volt rated pumps) for 150 milliseconds (250 milliseconds for the 150SP).

  2. Cut the voltage for a minimum of 150 milliseconds (250 milliseconds for the 150SP). This will provide a maximum cycle rate of 3.33 hertz (2 hertz for the 150SP).

To control the flow or dispense timing, modify the 'off-time'.
Lengthening the 'off-time' will cycle the pump slower. The pump can cycle faster, but accuracy and dispense volume may be affected, depending upon the application setup.

Omnifit and Biochem Valve products can be found in instrumentation designed for:
  Agriculture
Auto Sampling
Blood Diagnostics
Biotechnology
Chromatography
DNA/Genetic Analysis
DNA/Protein Synthesis
  Environmental Analysis
Life Sciences
Medical Devices
Microbiology
Pharmaceutical
Reprographics
Veterinary
 

 solenoid metering pumps


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