Lab Glass Stopcocks
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Stopcock Assembly
Thermo Scientific NalgenePhase interface visible down to stopcock. Polypropylene funnel and screw closure are chemically inert, translucent, autoclavable and have no known solvents at room temperature. Susceptible to softening and swelling from strong oxidizers and aggressive solvents. TFE stopcock assembly has…
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Stopcock, High Pressure, Straight Bore
Ace GlassHigh pressure straight bore stopcock with solid plug.
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KIMBLE® HI-VAC® Straight Valve with PTFE Plug, without Tip O-Ring, Bore Range 0…
DWK Life Sciences (Duran)The straight high-vacuum valve without tip O-ring is for use in vacuum applications up to 5×10-7torr. Designed with a precision external thread for fine control Valve can be used as a bleed up to ¹/2 turn Full open is at…
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Chem-Vac™ Glass Portion Only Valves
ChemglassCHEM-VAC™ valve glass portion only. Valve has a single sidearm sealed at a 90º angle to the barrel. Heavy duty rounded coarse thread and precision formed tapered seat. Dimensions as listed. PLEASE NOTE: THE 0-20mm BORE SIZE IS OUR PREVIOUS STYLE CG-500 SERIES VALVE WITH COARSE THREAD.
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T-Bore Glass Plug Pressure Stopcocks
ChemglassT-BORE, Similar to CG-458, but with three stems sealed 90º apart. Solid glass plug has a "T" shaped bore so that any two or all three arms can be connected at one time. Plug is precision ground and hand-lapped with corresponding numbers on the barrel and plug. DOUBLE OBLIQUE BORE,…
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General Purpose Threaded Stopcock
ChemglassSimilar to CG-595, but with the arms bent to minimize hold-up.
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SYNTHWARE PTFE Stopcock Plugs, Straight Bore
Kemtech AmericaStopcock Plug, Straight Bore, PTFE, Synthware, Bore: 2, 4, and 6mm available, Plug Size: 11/25, 15.2/30 and 16/35 available, supplied with PTFE plug, one PTFE washer and one o-ring.
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PTFE Straight Stopcock Plugs
DWK Life Sciences (Kimble)PTFE stopcock plug has a 1:5 taper PTFE is chemically-resistant and self-lubricating
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KIMBLE® HI-VAC® Straight Valve with PTFE Plug, without Tip O-Ring, Bore Range 0…
DWK Life Sciences (Duran)Manufactured from borosilicate glass 3.3 Similar to 826500 but without tip O-Ring exposure. Designed with a precision external thread for fine control Can be used as a bleed up to 1/2 turn Full open position is at 1-1/2 turns Primary seal is made with a FKM O-Ring on a tapered seat …
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SYNTHWARE PTFE Double Oblique Bore Stopcocks
Kemtech AmericaStopcock, Double Oblique, PTFE, Synthware, Bore: 2 or 4mm available, Plug Size: 12.9/44 or 14.4/44 available, Stem OD: 8 or 10mm available.
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Stopcock, Three-Way, T-Bore
Ace Glass3-way stopcock with T-bored solid glass plug. See Ace 8228 family for replacement plugs.
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SYNTHWARE High Vacuum Valves, 180 Degree
Kemtech AmericaHigh Vacuum Valve, 180 Degree, Synthware, Size: 0-4 or 0-8mm available, Side Arm OD: 9mm.
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Stopcock, Straight Bore, Glass Plug
Ace GlassA ruggedly constructed stopcock with solid glass plug and tapered flange which insures maximum strength at the seal. Bore of side arms is equal to or slightly larger than bores of plug on all sizes. For plugs, see 8223.
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Stopcock Rotaflo 6 mm Ra
CorningThese high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 6mm bore opening and have 10mm O. D. sidearms. They are designed so that only chemically resistant Polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. …
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SYNTHWARE Glass High Vacuum Double Oblique Bore Stopcocks
Kemtech AmericaStopcock, High Vacuum, Double Oblique, Synthware, Bore: 4mm, Plug Size: 17.35/50, Stem OD: 10mm, With solid glass plug, Precision ground with corresponding numbers on the barrel and the plug.
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High Vacuum Double Oblique Stopcocks
ChemglassSolid glass high vacuum stopcock with the Chemglass constant pressure retention device. This unique retaining system incorporates a glass plug having an extended snelling which accepts a stainless steel spring and clip. The spring keeps constant tension on the plug at all times and is easily…
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SYNTHWARE High Vacuum Valves, Three-Way, PTFE-Protected
Kemtech AmericaHigh Vacuum Valve, Three Way, PTFE Protected, Synthware, Size: 0-8mm, Side Arm OD: 9mm.
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J.Young high-vacuum PTFE valve
MilliporeSigmaThe J. Young high-vacuum PTFE valve helps in controlling the atmosphere when using air-sensitive materials.Features: •PTFE piston with unique PTFE-sheathed elastomer O-ring seals •Grease-free glass-to-PTFE seals •High-vacuum to 10-6 torr
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Scienceware® Stopcocks
SP Bel-Art2-Piece design requires no lubrication A quarter turn shuts off flow. Maximum pressure rating: 48 KPa (7 psi), 50cm of water. Easy, snap-together assembly creates a tight seal Select a size betweento fit tubing of 3/8 or ½" (9.5 or 12.7mm) I.D. Barbed connections
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SYNTHWARE High Vacuum Valves, 180 Degree, PTFE-Protected
Kemtech AmericaHigh Vacuum Valve, 180 Degree, PTFE Protected, Synthware, Size: 0-4, 0-8, 0-12mm available, Side Arm OD: 9mm.
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High Vacuum Double Oblique Stopcocks
ChemglassHollow plug, double oblique bore stopcock is precision ground with corresponding numbers on barrel and plug. Lower vacuum chamber is evacuated with a separate hole in the plug which is not in the line of flow.
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SYNTHWARE Plug Retention Kits
Kemtech AmericaPlug Retention Kit, Stopcock, Synthware, Stainless Steel, Multiple Plug Sizes Available.
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These high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 3mm bore opening and have 8mm O. D. sidearms. They are designed so that only chemically resistant Polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo®…
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High Vacuum Single Oblique Stopcock
ChemglassSolid plug, oblique bore stopcock is precision ground with corresponding numbers on barrel and plug. Lower vacuum chamber is evacuated with a separate hole in the plug which is not in the line of flow.
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Chem-Vac™ Glass Portion Only 90° Valves
ChemglassCHEM-VAC™ valve glass portion only. Valve has two sidearms sealed to the barrel at a 90º angle to one another. Heavy duty rounded coarse thread and precision formed tapered seat. Dimensions as listed. PLEASE NOTE: THE 0-20mm BORE SIZE IS OUR PREVIOUS STYLE CG-500 SERIES VALVE…
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SYNTHWARE Glass High Vacuum Stopcocks, 90 Degree
Kemtech AmericaStopcock, High Vacuum, 90 Degree, Synthware, Multiple bore and plug sizes available, Stem OD: 8, 10 and 12mm available, with hollow glass plug, Precision ground with corresponding numbers on the barrel and plug.
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Solid glass plug has a threaded glass snelling which accepts an assembly similar to the one supplied with standard PTFE stopcocks. This consists of a PTFE washer, PTFE nut and Viton O-ring. Assembly provides for uniform seating tension to be applied to the plug which is precision ground and…
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SYNTHWARE O-Ring Kits
Kemtech AmericaO-Ring Ket contains the following: 1xR007 and 2xR010. O-Ring Kit contains the following: 1xR108 and 2xR110. O-Ring Kit contains the following: 1xR110 and 2xR112.
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Stopcock adapter, top outer joint, bottom inner joint, PTFE plug. Spherical joint versions are both outer joints top and bottom.
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High vacuum stopcock with Tef-Cap O-Ring seals with variable openings from 0-3 to 0-10mm. Eliminate exposure to corrosive materials. For use to at least 13.6 Kg internal pressure. An ultimate vacuum of 10-7 can be realized with the standard three seals
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Stopcock Plugs, Double Oblique Bore
Ace GlassDouble oblique bore stopcock plugs available in 1:5 PTFE or Borosilicate.