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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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1 – 15 of 440 results
1

Bel-Art™ Stopcocks
GSA_VA

With a removable, leak-proof plug made of chemical-resistant, non-stick PTFE with barbed tubulations that accept 0.25 in. 0.375 in. I.D. tubing

EDGE
For Use With (Equipment) Tubing
Plug Material PTFE
For Use With (Application) Tubing
Autoclavable Autoclavable
2

DWK Life Sciences Kimble™ Kontes™ FlexColumn™ Three-way Luer Stopcock
SDP

Heavy-duty nylon

EDGE
3

Thermo Scientific™ Nalgene™ Three-way Stopcock
GSA_VA GREENER_CHOICE

Experience in-house fluid transfer system flexibility with this three-way stopcock, arranged in a T-shape to simply any two — or all three — arms of the stopcock with ease.

EDGE
Outlet Port Tubulated
Type Stopcock
Plug Material Polypropylene
Material Polypropylene
4

DWK Life Sciences Kimble™ Replacement Stopcock
SDP

Replacement for 17062F Series Burets

5

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
6

Bel-Art™ Replacement Stopcocks

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

7

Thermo Scientific™ Nalgene™ Stopcocks
GSA_VA GREENER_CHOICE

Develop in-house fluid transfer systems for accurate filling or dispensing. These stopcocks provide reliable, accurate liquid flow control.

EDGE
Type Stopcock
For Use With (Equipment) In-House Fluid Transfer System
Plug Material Polypropylene
No. per Case 6
Material Polypropylene
No. per Pack 1
8

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
9

Synthware™ Oblique Bore Hollow Plug High Vacuum Stopcock
GREENER_CHOICE SDP

Stem OD: 10 or 16 mm, with hollow plug, Precision ground with corresponding numbers on the barrel and the plug.

Type Oblique, Hollow, High Vacuum
Plug Material Glass
Material Borosilicate Glass
For Use With (Application) Organic Synthesis
10

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
11

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
12

Promega One-Way Luer Lok™ Stopcocks

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

13

DWK Life Sciences Kimble™ Stopcock Plugs
SDP

Parts: PTFE nut, rubber washer and PTFE washer

14

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

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

15

Thermo Scientific™ Nalgene Stopcock Assembly for Acrylic Burets
GREENER_CHOICE

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