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Stopcocks

Stopcocks work as valves, serving to regulate, interrupt or completely stop the flow of a gas or liquid through piping, tubing or a faucet, with tubes attached to the stopcock’s female joint easily separated or connected by a turn of the stopcock. Stopcocks may be held in place by vacuum, rubber rings or clips. Glass stopcocks need stopcock grease for lubricating and sealing the plug and shell. Glass stopcocks with plastic plugs are sealed without grease but are less effective for high vacuum. Plastic plug glass stopcocks, however, work well for low vacuum applications.
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Keyword Search:
31 – 45 of 461 results
31

Synthware™ 90° High Vacuum Hollow Plug Stopcock
GREENER_CHOICE SDP

Precision ground with corresponding numbers on the barrel and plug.

Type 90° Glass High Vacuum Valve
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
32

Synthware™ Replacement Metering Stopcock
GREENER_CHOICE SDP

Stopcock comes with a threaded PTFE needle valve for the fine control of flow through the bore of the stopcock plug.

Type Metering Stopcock
For Use With (Equipment) Metering Valve
Plug Material PTFE
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
33

Synthware™ Double Oblique Bore Glass Stopcock
GREENER_CHOICE SDP

Double Oblique Bore Stopcock has diagonal, parallel bores to allow connection of single stem to both stems on the opposite side. Hollow glass plug option is precision ground with corresponding numbers on the barrel and the plug

34

Synthware™ Double Oblique Bore PTFE Stopcocks
GREENER_CHOICE SDP

Double Oblique Bore Stopcocks have diagonal, parallel bores to allow connection of single stem to both stems on the opposite side.

Type Double Oblique Stopcock
Plug Material PTFE
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
35

Synthware™ Straight Bore Glass Stopcock
GREENER_CHOICE SDP

Plugs and barrels are ground to be interchangable.

Type Straight Bore Stopcock
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
36

Synthware™ Offset High Vacuum Hollow Plug Stopcock
GREENER_CHOICE SDP

Stem OD: 8, 10 or 12 mm available, with hollow glass plug, Precision ground with corresponding numbers on the barrel and the plug.

Type Offset Glass High Vacuum Valve
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
37

Synthware™ T-Type High Vacuum Hollow Plug Stopcock
GREENER_CHOICE SDP

Precision ground with corresponding numbers on the barrel and plug.

Type T-Type High Vacuum Valve
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
38

Synthware™ 120° Bore Stopcock
GREENER_CHOICE SDP

Bored to allow connection of any two arms at once.

39

Synthware™ Replacement 120° Bore Stopcock
GREENER_CHOICE SDP

Stopcock has bores to allow connection of any two arms at once.

40

Synthware™ Replacement for T-Bore Glass Stopcock, Plug ONLY
GREENER_CHOICE SDP

Glass plug ONLY.

Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
42

Promega One-Way Luer Lok™ Stopcocks

Use with the Vac-Man Laboratory Vacuum Manifold to control each port individually.

ENCOMPASS_PREFERRED
43

Eisco™ Burette Stopcock Plunger (PTFE)
SDP SCI_ED

Replacement stopcock for Eisco part CH0233B

44

Eisco™ Glass Stopcock with Standard Ground Joint
SDP SCI_ED

Glass stopcock with standard ground joint is designed for use with 1000 to 2000 mL aspirator bottles.

Connectors 2-way
Includes Socket
Type Stopcock Key
For Use With (Equipment) Aspirator bottles
Diameter (Metric) 4 cm
Plug Material Borosilicate Glass
Material Borosilicate Glass (3.3)
For Use With (Application) Dispensing liquid
Autoclavable Autoclavable
Width (Metric) 2.54 cm
45

Eisco™ Rotaflow Stopcock Adapter
SDP SCI_ED

Made of Borosilicate 3.3 glass with a cone size of 14/23, this adapter has a low temperature gradient to withstand high temperatures and thermal shocks.