Lab Glass Stopcocks
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High Vacuum Straight Bore Stopcocks
ChemglassSolid glass high vacuum stopcock with the NEW Chemglass improved 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…
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Pressure Release Bubbler
ChemglassBUBBLERS, HIGH CAPACITY, CHECK VALVES, High capacity check valve bubbler keeps oil and air from being drawn into a reaction system when negative pressure is developed. Bubbler has two 1/2" swagelock type fittings on top permitting one side to be connected to the nitrogen source and one side to…
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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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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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Stopcocks
ChemglassFor replacement or construction of burets having a 1:5 PTFE stopcock plug. One arm is pulled to a delivery tip.
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Stopcock Plugs, Double Oblique Bore
Ace GlassDouble oblique bore stopcock plugs available in 1:5 PTFE or Borosilicate.
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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 Plug Retention Kits
Kemtech AmericaPlug Retention Kit, Stopcock, Synthware, Stainless Steel, Multiple Plug Sizes Available.
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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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Pressure Relief Valve Complete
ChemglassAutomatic, adjustable pressure relief valve is for use on apparatus where internal pressure build-up is a concern. Tension on the stainless steel spring is adjusted by turning the top control knob in or out and will relive pressures from 5 to 50 PSI. Two-piece stem is made of PTFE and is fitted…
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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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Adapter, Stopcock and syringe port
Ace GlassStandard taper adapter with 8-425 gpi threaded top and a 2mm bore stopcock with a ptfe plug. Syringe port is supplied with a cap and septum.
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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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These high performance Rotaflo® three-way 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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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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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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SYNTHWARE High Vacuum Valve Plugs
Kemtech AmericaHigh Vacuum Valve Plug, PTFE Protected, Synthware, Size: 0-4, 0-8 or 0-12mm available, Plug has a machined in PTFE tip O-ring to make the primary seal.
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Stopcock, High Pressure, Straight Bore
Ace GlassHigh pressure straight bore stopcock with solid plug.
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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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Straight connecting PTFE stopcock adapter. 15MM O-Ring top joint, either a spherical or standard taper bottom joint. Comes with FETFE O-Ring.
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Replacement one-piece stem and control knob for our NEW 0-14mm drain valve. Available with either a red indicator band used for high temperature applications up to 230°C, or with a blue indicator band used for low temperature applications down to -60°C. The high temperature 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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Stopcock Plugs, Straight Bore
Ace GlassStraight bore stopcock plugs, available in borosilicate or PTFE. PTFE plug Corning# 7681.
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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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PYREX® Brand Stoppers
CorningFull length stoppers, closed at bottom, with penny head Conform to ASTM Standard E 675
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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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Needle Valves, V-Point
Scott SpecialtyWith forged brass body, sharp stainless steel needle and small opening at the seat for accurate control of small flow of gases at inlet pressures up to 3000 psig at 70°F (20.7 MPa at 21.1°C) Maximum temperature rating: 450°F (232°C) Useful also for water, compressed air…
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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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SYNTHWARE Glass High Vacuum Oblique Stopcocks
Kemtech AmericaStopcock, High Vacuum, Oblique, Synthware, Bore: 4 and 8mm, Plug Size: 17.35/50 or 25/65 available, Stem OD: 10 or 16mm, with hollow plug, Precision ground with corresponding numbers on the barrel and the plug.
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