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Gas regulator BHN-3 by Chiyoda Seiki for precise low-flow CO2 and CO2+N2 gas control with dual pressure gauges.
The Chiyoda Seiki BHN-3 Gas Regulator is engineered for precise regulation of low flow rates for carbon dioxide (CO2) and CO2 mixed with nitrogen (N2) gases, essential in applications such as bioprocessing, molecular diagnostics, and biotechnology gas delivery systems. This regulator features dual pressure gauges for accurate monitoring: a high-pressure gauge rated at 25 MPa on the primary side and a low-pressure gauge at 0.25 MPa on the secondary side. The gas inlet uses a standard W22-14 right-hand cylinder connection with packing seal, while the outlet provides a Φ6 mm hose port, detachable and convertible to an M16×P1.0 right male thread.
Originally designed for laboratory and industrial environments where controlled CO2/nitrogen gas delivery is critical, the BHN-3 is particularly suitable for applications such as synthetic biology gas environments and controlled atmosphere bioreactors. Please note this unit is offered as a used product sold as-is, and it may not retain the original factory performance. Verification of operational status prior to integration into critical setups is recommended.
This gas regulator supports high-precision pressure control indispensable for biomanufacturing pipelines and gene editing workflows dependent on stable gas supply conditions. Its technical specifications make it compatible with standard cylinders and pneumatic setups common in clinical diagnostics and biotechnological research labs.
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With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.
Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.
Two to six weeks, depending on refurbishment scope and whether calibration is included.
We ship to 38 countries. Crating and customs handling are quoted with the instrument.
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Last updated 6 November 2026
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