Pinch Valves

Bio-Chem Pinch Valves: superior fluid isolation for OEM instrumentation

For engineers working on analytical instruments or medical equipment, the integrity of the fluid path is crucial. Bio-Chem Pinch Valves offer a contact-free solution in which the liquid only comes into contact with the tubing. This eliminates contamination of the valve and safeguards the integrity of sensitive media, such as blood samples or reagents.

Why R&D engineers choose Bio-Chem

Bio-Chem Fluidics has optimised the pinch valve for millions of cycles, with a focus on precision and reliability in compact systems:

• Contamination-free design: Because the valve pinches the tubing from the outside, there is no internal dead volume or risk of carry-over. That makes it the ideal solution for applications with particle-laden liquids or aggressive chemicals.
• Shear-sensitive media: The smooth passage prevents mechanical stress on cells or proteins. That is why this valve is the standard in flow cytometry and haematology instruments.
• Optimal tubing life: The specially shaped "contoured" plunger reduces the load on the tubing wall. This considerably extends the life of the tubing used compared with standard pinch valves.
• Flexible configurations: Available in normally open (NO), normally closed (NC) and dual-tube (DT) versions. The valve also supports a wide range of tubing materials such as silicone, Bio-Chem C-Flex® and PharMed®.

Technical integration & scalability

The Bio-Chem Pinch Valve series has a modular construction to speed up design-in processes:

• 075P series: For microfluidic integration with tubing from 0,3 mm to 1,6 mm ID.
• 100P series: The universal standard for medium flows (0,8 mm to 4 mm ID).
• High-pressure options: Special versions for applications where higher system pressures must be shut off without leakage.

Technical specifications for system design

Integration support for OEMs

Inacom is your partner in selecting the right valve-tubing combination. The performance of a Bio-Chem Pinch Valve depends on the right mechanical matching. Our experts advise you on the wall thickness and durometer of the tubing to guarantee a perfect seal at your specific working pressure.

Are you working on a new instrument for clinical diagnostics or laboratory automation? Our engineers support you in the design phase in NL, BE and DE.