Stopcocks

Stopcocks

Stopcocks work as valves, serving to regulate, interrupt, or completely stop gas or liquid flow 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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Plug Material

Type

Application

Brand

For Use With (Equipment)

Material

Outlet Port

Plug Bore

Nalgene™ Three-way Stopcock Thermo Scientific™

Experience in-house fluid transfer system flexibility with a Thermo Scientific™ Nalgene™ Three-way Stopcock, arranged in a T-shape to connect any two — or all three — arms of the stopcock with ease.

Nalgene™ Stopcocks Thermo Scientific™

Permit reliable, accurate liquid flow control in liquid handling systems by using Thermo Scientific™ Nalgene™ Stopcocks. They are ideal for use in developing in-house fluid transfer systems for one-way fluid path for accurate filling or dispensing.