With a ball valve, stopcocks control the flow of liquids and low pressure gases in delivery systems. Fitting into corresponding female joint parts, the plugs come in any number of bore hole arrangements. Often featuring tapered ends, a wider tube diameter range is accommodated for to increase working flexibility. The high quality, leak proof stopcocks meet vacuum applications and come in ground glass styles or plastic to eliminate the need of greasing. VWR offers a wide variety of stopcocks suited for use with liquids or gases under both low or high pressure.
VWR®, Spare Stopcocks
Supplier: VWR Collection
Spare stopcock, VWR®, Stopcock with PTFE spindle, NS 24/29
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VWR® Stopcock for Burette
Supplier: VWR Collection
VWR®, Spare stopcock for burettes 612-6694, 612-6695 and 612-6696
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Cadence Science Adapter Fittings, Luer Stopcock
Supplier: Avantor Fluid Handling
Exceptional durability.
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Spare keys for stopcocks, straight bore
Supplier: Lenz Laborglas GmbH & CO.KG
Plugs, Hole Ø: 6,0 mm, Spigot: 18,8 NS, For: Stopcocks, straight bore, Spare PTFE stopcock key
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Stopcocks for burettes, lateral
Supplier: Lenz Laborglas GmbH & CO.KG
NS stopcock made of borosilicate glass, facetted tip, with plug of solid glass or PTFE and screwthread retaining device.
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Stopcocks with GL thread, EX
Supplier: Bohlender
Stopcocks with GL thread for distributing liquids or gases, quick and easy disconnection of flow.
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Stopcocks for desiccators
Supplier: Lenz Laborglas GmbH & CO.KG
With PTFE spindles (except stopper).
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Stopcocks, miniature
Supplier: Bohlender
Miniature stopcocks of PTFE with male or female connection threads and stopcock plug of FEP.
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Stopcocks, two-way
Supplier: Lenz Laborglas GmbH & CO.KG
Stopcocks are made of DURAN® borosilicate glass with solid NS glass plug, screwthread retaining device, and two oblique bores.
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One-way stopcock, Discofix®
Supplier: B. Braun
Suitable for all pressure infusion systems.
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Stopcock for aspirator bottles
Supplier: DWK Life Sciences
Borosilicate glass 3.3, clear, with PTFE spindle, for GL 32 screw thread.
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Masterflex® Stopcocks with Tube Compression and NPT Connections, PTFE, Avantor®
Supplier: Avantor Fluid Handling
Use with caustic and high-purity liquids in many applications.
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Stopcocks, three-way, Czako
Supplier: Lenz Laborglas GmbH & CO.KG
Stopcocks, made of DURAN® borosilicate glass.
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Elbow stopcock, b.safe
Supplier: Bohlender
90° Elbow fitting. To connect b.safe Waste Tubes to b.safe Waste Caps without bending. Integrated stopcock with plug made of PTFE-EX to stop the flow through b.safe Waste Tubes when canisters are to be exchanged or emptied.
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Stopcocks, needle-valve, straight
Supplier: Lenz Laborglas GmbH & CO.KG
Needle-valve stopcocks are made of DURAN® borosilicate glass, with PTFE spindle.
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Stopcocks, NO-DRIP
Supplier: BOCHEM
This stopcock are already mounted, PTFE seal with max. 260 °C.
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Stopcocks, needle-valve, 90° angle
Supplier: Lenz Laborglas GmbH & CO.KG
Needle-valve stopcocks are made of DURAN® borosilicate glass, with PTFE spindle.
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Stopcocks with Flow Indicator, PVC
Supplier: Avantor Fluid Handling
Easily control flow with flow indicator handle.
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Stopcocks for burette, straight
Supplier: Lenz Laborglas GmbH & CO.KG
NS stopcock made of borosilicate glass 3.3, facetted tip with plug of PTFE and screwthread retaining device.
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Hayward Universal Stopcock Kit, PVC
Supplier: Avantor Fluid Handling
Ideal for laboratory and process sampling.
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Thermo Scientific™ Nalgene™ Two- and Three-Way Stopcocks with Hose Barb Connections
Supplier: Avantor Fluid Handling
Easily adjust flow.
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Stopcock, b.safe
Supplier: Bohlender
The grip position indicates if the passage is open or closed.