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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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Search Within Results
Keyword Search:
1 – 15 of 231 results
1

Azlon™ Spare Stopcock for Narrow Neck HDPE Aspirator

For use with narrow neck HDPE aspirator

EDGE
Type Aspirator Stopcock
Material HDPE
2
Promotions Available

Kartell™ Plastilab™ Straight-Bored Stopcocks

Designed for liquids and gases under low pressure or low vacuum.

EDGE
Material Polypropylene,HDPE
4
Promotions Available

Thermo Scientific™ Nalgene™ Three-way Stopcock

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.

Outlet Port Tubulated
Type Stopcock
Plug Material Polypropylene
Material Polypropylene
5
Promotions Available

Thermo Scientific™ Nalgene™ Stopcocks

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
7

Fisherbrand™ PTFE Burette Stopckcock, Straight Through Type

Fisherbrand™ PTFE Burette Stopckcock, Straight Through Type supplied with 8mm diameter sidearm in borosilicate glass, bore is 2mm.

Plug Bore 2 mm
Temperature (Metric) -200°C to +280°C
Diameter (Metric) 8 mm
Material PTFE
8

Cowie Technology™ PTFE T-Type Stopcocks

Cowie Technology™ PTFE T-Type Stopcocks feature a pure PTFE body and plug and combine all the desirable properties of the Ultimate Laboratory Stopcock.

Includes Borosilicate glass sidearms
Type T-Type
Description T-Type Stopcock
Plug Material PTFE
Material PTFE
No. per Pack 1 Each
Autoclavable Autoclavable
9

Masterflex™ Stopcocks with Luer Connections

Regulate flow without any leaking using these fittings. Cole-Parmer™ Stopcocks with Luer Connections are available with either a male luer lock or a male luer slip.

Type Stopcock
Plug Material Polycarbonate and HDPE
Material Polycarbonate,HDPE
10

BRAND™ T-Bore Stopcock

T-Bore Stopcock is constructed of PTFE and includes a nozzle.

Includes Nozzle
Type T-Bore Stopcock
Material PTFE
12

Pyrex™ Borosilicate Glass Aspirator Stopcock with Ground Cone

Inserts into the ground glass side-socket of an aspirator botte. Pyrex™ Borosilicate Glass Aspirator Stopcock with Ground Cone provides a leakproof seal.

Type Aspirator Stopcock
For Use With (Equipment) Aspirator bottles 1541 and 1569
Material Borosilicate Glass
13

Pyrex™ Spare PTFE keys for Pyrex™ Stopcock

For use with Pyrex Stopcock

For Use With (Equipment) Pyrex™ Stopcock
Material PTFE
14

Pyrex™ Straight Bore Stopcock

These stopcocks are specially designed and carefully manufactured for high vacuum applications

15

Pyrex™ Borosilicate Glass Stopcock with Key

Manufactured from Pyrex™ borosilicate glass with PTFE key, for superior chemical resistance. Pyrex™ Borosilicate Glass Stopcock with Key are made to a taper of 1:10 giving a combination of performance and ease of operation.

Includes PTFE key, Plastic screw thread retaining device
Material Borosilicate Glass