Stopcocks

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  • A 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.

  • Similar to CG-446, but with the top oblique stem being made of 2mm ID capillary tubing.

  • STOPCOCKS, STRAIGHT BORE, GLASS PLUGS, CAPILLARY ARMS, Similar to CG-400, but with the sidearms being made of capillary tubing having the same bore as the plug. Supplied complete with metal retaining clip CG-423. STOPCOCKS, STRAIGHT BORE, SCHLENK, GLASS PLUGS, This stopcock is especially…

  • 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…

  • BUBBLERS, 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…

  • T-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,…

  • CHEM-VAC™ valve has single sidearm sealed at a 90º 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…

  • 1-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.

  • Similar 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

  • Replacement components for 1:5 taper PTFE plugs. O-rings are Viton, nuts are green, and washers are white.

  • Centrifuge Tubes

    Chemglass

    TUBES, CENTRIFUGE, 50ML, Centrifuge tube with a short, conical bottom and 24-415 GPI threaded top. Fits I.E.C. shield number 320. Supplied complete with a Poly-Seal® polypropylene lined phenolic screw cap. TEST TUBE TONGS, Tongs are made of zinc coated steel, 6" overall length. Spring…

  • CHEM-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.

  • Hollow plug, oblique bore stopcock is precision ground with corresponding numbers on barrel and plug. Lower vacuum chamber is evacuated via a separate hole in the plug which is not in the line of flow.

  • Solid 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.

  • 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…

  • 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…

  • Hi-vac valve with two sidearms sealed to the barrel at a 180° angle to one another and on the same plane.

  • Solid 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…

  • Automatic, 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…

  • PTFE Valves

    Chemglass

    VALVES, 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,…

  • The 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.

  • Metal retaining clip is designed to apply pressure against the stopcock plug and barrel. Clips eliminate blow-out and loose fit while minimizing freezing. They are made from high carbon tempered spring steel having a green corrosive resistant, phosphate base finish.

  • CHEM-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.

  • Solid 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…

  • 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.

  • CHEM-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…

  • 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.

  • Hollow 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.

  • Hi-vac valve with two sidearms sealed to the barrel at a 180° angle to one another and on the same plane.

  • Hollow 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.

  • A 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.

  • Hi-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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Select up to 3 products