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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:
16 – 30 of 454 results
16

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
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

Synthware™ Replacement Double Oblique Bore 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.

Type Double Oblique Stopcock
Plug Material PTFE
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
20

Synthware™ Straight Bore Stopcock
GREENER_CHOICE SDP

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
21

Bel-Art™ Replacement Stopcocks

Polypropylene body has Teflon™ PTFE plug, washer and bright red handle

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 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
24

Troemner™ Regular Hosecock, Stainless Steel

Deliver accurate regulation or interruption of fluid flow

25

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

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

EDGE
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
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™ KIMAX™ Buret PTFE Stopcock Assemblies
SDP

For 03-700-12 Series burets.

28

Thermo Scientific™ Nalgene Stopcock Assembly for Acrylic Burets
GREENER_CHOICE

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

29

DWK Life Sciences Kimble™ Kontes™ PTFE Plug for Straight Bore Stopcocks, Size 2
SDP

PTFE Stopcock Plug size 11/25 for 2mm bore size

30

Synthware™ Replacement 120° Bore Stopcock
GREENER_CHOICE SDP

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