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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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Autoclavable

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16 – 30 of 443 results
16

Synthware™ Straight Bore High Vacuum Glass Stopcock
GREENER_CHOICE SDP

Plug is precision ground and hand lapped with corresponding numbers on barrel and plug.

Type Straight Bore - High Vacuum
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
17

Promega One-Way Luer Lok™ Stopcocks

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

18

DWK Life Sciences Kimble™ 2 mm Varibor Metering Value Stopcock Plug
SDP

Allows delivery of preset volumes of gases or liquids to reactions using the needle value

19

Thermo Scientific™ Nalgene Stopcock Assembly for Acrylic Burets
GREENER_CHOICE

For use with 25 mL Acrylic Nalgene Break-Resistant Burets.

20

DWK Life Sciences Kimble™ KIMAX™ Burets with Threaded Closures Replacement PTFE Stopcock Assembly
SDP

Replacement stopcock for educational buret 17121H.

21

DWK Life Sciences Kimble™ KIMAX™ Buret PTFE Stopcock Assemblies
SDP

For 03-700-12 Series burets.

22

Synthware™ Replacement Straight Bore Stopcock
GREENER_CHOICE SDP

Supplied with PTFE plug, one PTFE washer and one O-ring.

Includes PTFE plug, One PTFE washer, One o-ring
Type Straight Bore Stopcock
For Use With (Equipment) Straight Bore Tap
Plug Material PTFE
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
23

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

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
24

Synthware™ T-Bore Stopcock, PTFE
GREENER_CHOICE SDP

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
25

Synthware™ Replacement T-Bore Stopcock
GREENER_CHOICE SDP

Plug has a T-shaped bore to connect any two or all three stems.

Type T-Bore Stopcock
For Use With (Equipment) T-Bore Tap
Plug Material PTFE
Material PTFE
For Use With (Application) Organic Synthesis
26

DWK Life Sciences Kimble™ Straight Bore Stopcock without plug, 4mm
SDP

Straight-bore, sandblasted stopcock with a 1:5 taper.

27

DWK Life Sciences Kimble™ Replacement Stopcocks for KIMAX™ Microburet with Three-Way PTFE Stopcock
SDP

For use with Kimax™ Microburet.

28

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
29

Synthware™ T-Bore Stopcock, Glass
GREENER_CHOICE SDP

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
30

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