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
GPE Scientific™ J Young O-Ring Tap Needle Valve
GPE Scientific™ J Young O-Ring Tap Needle Valve incorporates a PTFE piston sealed as the O-ring with a PTFE needle shut-off point.
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BRAND™ Needle-Valve Stopcock and Spare Spindle
Needle-Valve Stopcock and Spare Spindle constructed of PTFE with retention device.