Description
Check valve, double ball and seat, is a precision fluidic valve component for the ACQUITY H-Class QSM quaternary solvent manager. In UPLC solvent delivery, check valves control unidirectional flow, support stable pump priming, and help maintain pressure integrity across the solvent path. The double ball and seat design is intended for reliable sealing under the cyclic pressures typical of quaternary solvent managers. Supplied as a single-piece pack, this valve serves as a maintenance and replacement part for the specified ACQUITY H-Class QSM instrument model. It is offered as an equivalent product to Waters article 700005164 and is available from manufacturer Altmann Analytik for laboratories servicing Waters-compatible H-Class systems. Typical settings include pharmaceutical QC, bioanalysis, method development, and research laboratories where consistent pump performance is required. Timely replacement of worn check valves can restore flow directionality and reduce issues linked to leakage or incomplete seating. Fitment should follow the instrument service documentation to ensure correct orientation, sealing, and hydraulic function within the QSM fluidic manifold.
This article belongs on HPLC accessories, in HPLC columns & accessories.
Key features
- Pack size: 1 pc
- Type: Check valve
- Design: Double ball and seat
- Compatibility: ACQUITY H-Class QSM
- Instrument class: Quaternary solvent manager
- Equivalent to: Waters 700005164
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Questions about Check Valve, Double Ball & Seat
What is this article?
Check Valve, Double Ball & Seat is the article on this page. Luminix Health distributes Altmann Analytik for laboratory use. It sits in HPLC accessories, inside HPLC columns & accessories, in Chromatography equipment.
HPLC accessories are the unions, the ferrules, the lamp and the mixer parts around the pump and the detector. A ferrule that has been swaged on one fitting does not reseal on another. The part has to be the one for that thread and that tubing.
An HPLC column is a tube packed, or coated, with a stationary phase. The sample is carried through it by a liquid, and the compounds leave at different times. The phase, the particle size, the length and the internal diameter decide the separation. A guard column is a short sacrificial piece in front of the analytical column. Fittings and tubing have a bore that either preserves the peak or smears it. Compound names follow IUPAC. Data are on PubChem. Method grades often cite the European Pharmacopoeia or USP.
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