Chemglass Lab Glass Stopcocks
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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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Similar to CG-446, but with the top oblique stem being made of 2mm ID capillary tubing.
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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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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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Glass Plug Straight Bore Stopcocks
ChemglassThe 2mm through 6mm bore sizes are supplied complete with the listed size metal retaining clip CG-423. The 8mm and 10mm bore sizes are supplied with a #29 and #34 CG-145 Keck clip respectively.
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PTFE Valves
ChemglassVALVES, IN-LINE, PTFE TIP, Hi-vac valve with bent arms to minimize hold up of fluids that would occur in conventional valves. Designed with a precision external thread for fine control. VALVES, 3-WAY, PTFE TIP, Hi-vac valve with three way configuration for use in construction of manifolds,…
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Exposed O-ring Tip Valves
ChemglassVALVES, IN-LINE, EXPOSED O-RING TIP, Hi-vac valve with bent arms to minimize hold up of fluids that would occur in conventional valves. Designed with a precision external thread for fine control. VALVES, 3-WAY, EXPOSED O-RING TIP, Hi-vac valve with three way configuration for use in construction…
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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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PTFE Tip Valves
ChemglassPTFE TIPHi-vac valve with two sidearms sealed to the barrel at a 90° angle to one another. Designed with a precision external thread for fine control.
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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 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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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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High Vacuum Straight Bore Stopcocks
ChemglassHollow plug, straight bore stopcock is precision ground and hand-lapped with corresponding numbers on barrel and plug. They are supplied complete with the listed size CG-423 metal retaining clip.
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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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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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T-Bore PTFE Plug Stopcocks
ChemglassA 1:5 taper PTFE stopcock with three stems sealed 90º apart. PTFE plug has a "T" shaped bore to connect any two or all three stems.
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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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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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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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General Purpose Threaded Stopcock
ChemglassSimilar to CG-595, but with the arms bent to minimize hold-up.
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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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Replacement components for 1:5 taper PTFE plugs. O-rings are Viton, nuts are green, and washers are white.
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S-Type Exposed O-ring Tip Valves
ChemglassHi-vac valve with two sidearms sealed to the barrel at a 180° angle to one another and on the same plane.
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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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Chem-Vac™ Glass Portion Only 180° Valves
ChemglassCHEM-VAC™ valve glass portion only. Valve has two sidearms sealed to the barrel at a 180º angle to one another and on the same plane. Heavy duty rounded coarse thread and precision formed tapered seat.
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Straight Bore 1-Arm Larger Stopcocks
ChemglassSimilar to CG-424 but with one arm of the stopcock being of a larger diameter. Larger arm facilitates construction of stronger apparatus such as separatory funnels and burets. Available complete with 1:5 taper PTFE plug or glass shell only. FOR REPLACEMENT PLUGS, SEE CG-424 LISTING
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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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High Vacuum T-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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CHEM-CAP, METERING, LOW HOLD UP, CHEM-VAC™ CHEM-CAP® metering valve has an extended tip on the plug to allow semi-needle valve control of gases and liquids. Similar to CG-965 CHEM-VAC™ valve but with the arms bent to minimize hold-up of fluids. See CG-971 for replacement…
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180° PTFE Tip Valves
ChemglassHi-vac valve with two sidearms sealed to the barrel at a 180° angle to one another and on the same plane.
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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…