Lab Glass Stopcocks
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Sciencware® Stopcocks
SP Bel-Art2-way and 3-way Connections This polypropylene stopcock has a detachable, watertight and inert Teflon® PTFE plug that contacts any fluid being dispensed. The barbed fitting end accepts 6.4 to 9.5mm (1/4 to 3/8") I.D. tubing. Three-way models allow connection of two or three arms. Pressure…
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Nalgene Polypropylene Straight Bore Stopcocks
Thermo Scientific NalgenePolypropylene with Teflon® TFE plug No lubrication required Offered in 2 mm and 4 mm bore sizes Arms are five-mm bore, serrated to take 1/4 to 7/16 inch rubber tubing
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CHEM-VAC™ valve glass portion only. Valve has two sidearms sealed to the barrel at a 180º angle to one another and bent to minimize hold up of fluids. Heavy duty rounded coarse thread and precision formed tapered seat.
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For lubricating ground glass joints, glass stopcocks and valves, Tensette Pipets, and for sealing desiccators. Lubricant has low vapor pressure and resists attack by acidic and alkaline solutions. Hach products are intended for sale/shipment within the US only. International customers…
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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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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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SYNTHWARE PTFE Stopcocks, Straight Bore
Kemtech AmericaStopcock, Straight Bore, PTFE, Synthware, Bore: 2, 4, and 6mm available, Plug Size: 11/25, 15.2/30, and 16/35 available, Stem OD: 8, 10, and 12mm available, with 1:5 PTFE plug and a threaded pressure nut.
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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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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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Replacement Stopcock Plug
Ace GlassReplacement stopcock plugs with inlet feeds for rotary evaporators. Codes -08, -10 for Buchi assemblies and -20 for Heidolph 4000 series. All plugs are 19/38.
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Spigot "Air"
BürkleNo additional ventilation opening required, PE, transparent, 3/4" thread connection outside. Self-venting NW 13 mm Seal made of natural rubber
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Straight connecting adapter, 4mm glass plug stopcock, 15mm O-Ring top joint and either a spherical joint or an inner standard taper joint on the bottom.
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Stopcock, Vacuum, PTFE, Low Hold-Up
Ace GlassThreaded vacuum stopcock with PTFE plug and new hooded handle that permits smooth needle valve adjustment down to 0.1cc/min. flow rate. In-line design of barrel offers less hold-up than with 8192 design. Double PTFE ring seals prevent exposure of FETFE
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Straight Bore 1-Arm Capillary Stopcocks
Chemglass1-ARM CAPILLARY Similar to CG-424, but with one arm being made of 2mm ID capillary tubing. CAPILLARY ARMS Similar to CG-424, but with both arms being made of 2mm ID capillary tubing.
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Stopcock, Polyethylene Miniature
DynalonMiniature Stopcocks. The low friction properties of high density polyethylene allows for easy turning of key which requires no lubricant, thus eliminating blockage of the bores with grease.
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Easy action PTFE plug with hooded handle, threaded into heavy wall glass barrel, permits smooth adjustment. Arms are at 90 degree angle. Double PTFE ring seal prevents exposure of FETFE backup O-Ring to corrosive gases and liquids. Plug, with hooded ha
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Organic Chemistry Labset Kit
ChemglassORGANIC CHEMISTRY LABSET KITS, 19/22, Chemglass organic chemistry kits contain the basic glassware required to perform basic experiments such as vacuum or atmospheric distillation, reflux or reflux with addition, extraction as well as other organic experiments. Each kit contains the 14 glass items…
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T-BORE, CAPILLARY ARMS, Similar to CG-436, but with all three arms being made of 2mm ID capillary tubing. 120°, A 1:5 taper PTFE stopcock with three sidearms sealed 120º apart. Plug has a bore to allow connection of any two arms at once.
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Adapter, Septum Inlet, with Stopcock
Ace GlassAir-sensitive sample handling adapter features either a glass or PTFE t-bore stopcock, standard taper joint and septum port arms. Supplied with two septa, Ace 9096 family.,/p>
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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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Stopcock adapter featuring either a bent or straight hose connection and a glass or PTFE plug. See Ace 8223 for replacement glass plug and Ace 8224-04 for PTFE plug.
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SYNTHWARE Glass High Vacuum Stopcocks, Offset
Kemtech AmericaStopcock, High Vacuum, Offset, Synthware, Multiple bore and plug sizes available, Stem OD: 8, 10 or 12mm available, with hollow glass plug, Precision ground with corresponding numbers on the barrel and the plug.
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High Vacuum 90° 4mm Stopcock
ChemglassSimilar to CG-476, but with the sidearms sealed at a 90º angle to each other. Precision ground and hand-lapped with corresponding numbers on barrel and plug.
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High Vacuum T-Type 4mm Stopcock
ChemglassSimilar to CG-478, but with the addition of an extra horizontal sidearm. Precision ground and hand-lapped with corresponding numbers on barrel and plug.
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Stopcock adapter featuring either a bent or straight hose connection and a PTFE plug.
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SYNTHWARE Sublimation Apparatus
Kemtech AmericaSublimation Apparatus, Synthware, Capacity: 100 or 150mL available, Flange Size: 57 or 80mm available, supplied complete with condenser, flask, O-ring and horseshoe clamp.
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Four Way PTFE Plug Stopcocks
ChemglassA 1:5 taper PTFE plug having double "V", 90º bores to connect opposite sets of adjacent arms. Configuration of stopcock allows it to be used in a system to obtain reversal of flow.
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Teflon Straight Bore Stopcocks
DWK Life Sciences (Kimble)Complete with nut, O-ring, washer For replacement in glassware originally supplied with Teflon straight bore plugs
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Used to regulate and measure flows, all working parts and indicia are visible, meter readings are unobstructed; the outlet swivels 360 degrees. Pressure tight to 2Kg/cm2 or more (air). Flow rates from 5 to 50L/minute air or 0.1 to 500cc/min water. Each tube is furnished with either a 316 stainless…