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Stopcocks

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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1 – 15 of 418 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

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
3

Bel-Art™ Replacement Stopcocks

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

4
Promotions Available

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

Heavy-duty nylon

5
Promotions Available

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

For 03-700-12 Series burets.

6

Promega One-Way Luer Lok™ Stopcocks

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

7

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
8

Bel-Art™ Two-Piece Stopcocks

Two-piece design snaps together forming a tight seal, and the free-turning key needs no lubrication

Connectors Barbed
Includes Stopcock
Outlet Port Tubulated
Type 2-piece
For Use With (Equipment) Flexible plastic or rubber tubing
Plug Material HDPE
Material Polyethylene
Fits Tubing ID 12.7 mm
Pressure 7 psi
9
Promotions Available

DWK Life Sciences Kimble™ Stopcock Plugs
SDP

Parts: PTFE nut, rubber washer and PTFE washer

10
Promotions Available

DWK Life Sciences Kimble™ Replacement Stopcock
SDP

Replacement for 17062F Series Burets

11

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
12

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
13

Troemner™ Regular Hosecock, Stainless Steel

Deliver accurate regulation or interruption of fluid flow

14

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.

Type Stopcock
For Use With (Equipment) In-House Fluid Transfer System
Plug Material Polypropylene
No. per Case 6
Material Polypropylene
No. per Pack 1
15
Promotions Available

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

For use with Kimax™ Microburet.