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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 465 results
31

Synthware™ T-Bore Stopcock, Glass
GREENER_CHOICE

T-shaped bore connects any two or all three stems.

Type T-Bore Stopcock
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
32

Synthware™ Straight Bore Stopcock
GREENER_CHOICE

Straight Bore Stopcock with a threaded pressure nut. Stopcock barrels are polished to prevent leakage due to uneven surfaces.

Type Straight Bore Stopcock
Plug Material PTFE
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
Autoclavable Autoclavable
33

Synthware™ 90° High Vacuum Hollow Plug Stopcock
GREENER_CHOICE

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
34

Synthware™ Double Oblique Bore Glass Stopcock
GREENER_CHOICE

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

35

Synthware™ Straight Bore Glass Stopcock
GREENER_CHOICE

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™ Double Oblique Bore PTFE Stopcocks
GREENER_CHOICE

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
37

Synthware™ High Volume Double Oblique Bore Glass Stopcock with Constant Pressure Retention
GREENER_CHOICE

Barrel and plug are precision ground, handlapped with corresponding numbers on the barrel and plug.

38

Synthware™ Replacement for Straight Bore Glass Stopcock, Plug Only
GREENER_CHOICE

Glass plug ONLY.

Type Replacement Stockcock
For Use With (Equipment) S69 Series
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
Autoclavable Autoclavable
39

Synthware™ T-Bore Stopcock, PTFE
GREENER_CHOICE

T-shaped bore connects any two or all three stems.

Type T-Bore Stopcock
Plug Material PTFE
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
41

Warner Instruments™ Stopcock with Leur Connector

Stopcock with Luer connector is supplied as a spare part.

ENCOMPASS_PREFERRED
42

Promega One-Way Luer Lok™ Stopcocks

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

ENCOMPASS_PREFERRED
43

United Scientific Supplies PP/PTFE Stopcocks, 6 Pk.
SCI_ED

United Scientific PP/PTFE Stopcocks are leak-proof and available in both two and three way

Connectors Serrated Ports
Includes Stopcock
Outlet Port Serrated
Plug Bore 6 to 10 mm
Type Stopcock
For Use With (Equipment) Lab Tubing
Plug Material PTFE
Material Polypropylene,PTFE
For Use With (Application) Stopcock for Lab Tubing
Autoclavable Autoclavable
44

Eisco™ Burette Stopcock Plunger (PTFE)
SDP SCI_ED

Replacement stopcock for Eisco part CH0233B

45

Chemglass Life Sciences Stopcock, Straight Bore, PTFE Plug, 4mm Bore, 15.2/30 Plug Size, 10mm OD Sidearms
SDP

2mm 120° PTFE Plug Only, 15.2/30. A 1:5 taper PTFE stopcock with three sidearms sealed 120º apart. Plug has a bore to allow connection of any two arms at once.

ENCOMPASS_PREFERRED