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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316 – 330 of 462 results

316

Chemglass Life Sciences Stopcock, Straight Bore, Glass Shell only for PTFE Plug, 1mm, 1.5mm & 2mm Bore, 11/25 Barrel Size, 8mm OD Sidearms

Stopcock, Straight Bore, Glass Shell only for PTFE Plug, 1mm, 1.5mm & 2mm Bore, 11/25 Barrel Size, 8mm OD Sidearms. Glass portion only of CG-424 stopcock. Accepts 1:5 taper PTFE plugs.

Pricing & Availability

317

Chemglass Life Sciences Valve, Chem-Vac, Hi-Vac, 1-Arm, 0-8mm Bore, Viton O-Ring

Valve, Chem-Vac, Hi-Vac, 1-Arm, 0-8mm Bore, Viton O-Ring. CHEM-VAC valve has single sidearm sealed at a 90¿ angle to the barrel. This inexpensive configuration allows for the lower portion of the barrel to be sealed directly to the apparatus being constructed, making for more compact, stronger assemblies. Valve has a TFE plug with three o-rings, the tip o-ring making the primary seal on the precision formed tapered seat. O-rings on the non-rotating shaft form an excellent dynamic seal between the TFE plug and glass barrel. See CG-935 for replacement plug, CG-537 for o-ring replacement kit, and CG-902 for glass portion only.PLEASE NOTE: THE 0-20mm BORE SIZE VALVE IS OUR PREVIOUS STYLE CG-500 SERIES VALVE WITH COARSE THREAD.

Pricing & Availability

318

Chemglass Life Sciences Stopcock, Double Oblique Bore, 1-Arm Capillary, PTFE Plug, 2mm Bore, 12.9/44 Plug Size, 7mm & 8mm OD Sidearms

Stopcock, Double Oblique Bore, 1-Arm Capillary, PTFE Plug, 2mm Bore, 12.9/44 Plug Size, 7mm & 8mm OD Sidearms. Similar to CG-446, but with the top oblique stem being made of 2mm ID capillary tubing.

Pricing & Availability

319

Chemglass Life Sciences Valve, Chem-Vac, Hi-Vac, Low Hold Up, 0-8mm, Viton O-Ring

Valve, Chem-Vac, Hi-Vac, Low Hold Up, 0-8mm, Viton O-Ring. Similar to CG-927 CHEM-VAC valve but with the arms bent to minimize hold up of fluids. Valve has TFE plug with three o-rings, the tip o-ring making the primary seal on the precision formed tapered seat. O-rings on the non-rotating shaft form an excellent dynamic seal between the TFE plug and glass barrel. See CG-935 for replacement plug, CG-537 for o-ring replacement kit, and CG-905 for glass portion only.