Stopcocks

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  • Stopcock Rotaflo 6 mm Ra

    Corning

    These 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. …

  • Stopcock, Newman Type

    Ace Glass

    Used with distilling head to enable operator to determine reflux ratios and take-offs. Described in Industrial and Engineering Chemistry, Volume 14, No. 11, Page 902, Nov. 15, 1942.

  • PYREX® 0-3mm Plain Bore Rotaflo® Two-Way 90° Angle Stopcock

    Corning

    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®…

  • Three-Way Stopcock Valve, 2 Female Luers to Male Luer

    DWK Life Sciences (Kimble)

    Heavy-duty nylon, 3-way control with locking fittings on all ports. 

  • Three-Way Polypropylene Stopcocks with Teflon Plug

    Thermo Scientific Nalgene

    Similar to 8652N30 series, but with three arms Stopcock has T-shaped bore for connecting any two or all three arms Offered in 2 mm and 4 mm bore sizes Arms serrated to take 1/4 to 3/8 inch tubing

  • Teflon Double Oblique Bore Stopcock

    DWK Life Sciences (Kimble)

    With nut, washer and O-ring Two mm bore

  • Stopcock Plugs, Straight Bore, 1:5 PTFE

    Ace Glass

    1:5 PTFE straight bore stopcock plugs

  • SYNTHWARE Glass T-Bore Stopcock Plugs

    Kemtech America

    Replacement Stopcock Plug, T-Bore, Glass, Synthware, Multiple Bore and plug sizes available, solid glass plug.

  • PTFE Stopcock Valve, 2 Way

    Ace Glass

    PTFE stopcock valve, 2-way, one 1/4 inch male luer port and one 1/4 inch male NPT port, 0.046 orifice. PTFE valve used with NPT fittings. Various ends available (male and female NPT, luer, 1/4" tube and 1/4"-28 UNF). IPS PTFE Stopcocks made of virgin PTFE. Compression ferrules made of virgin PTFE.…

  • Nalgene Polypropylene Straight Bore Stopcocks

    Thermo Scientific Nalgene

    Polypropylene 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

  • Stopcock, Polyethylene Miniature

    Dynalon

    Miniature 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.

  • Valve High Vac PTFE Sz 12

    DWK Life Sciences (Kimble)

    This straight high-vacuum valve is for use in vacuum applications up to 5 x 10-7 Torr. 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 …

  • Replacement PTFE Product Standard 4mm Straight Bore Stopcock Plug Assembly

    Corning

    These are replacement Polytetrafluorethylene (PTFE) Product Standard stopcock plug assemblies with 4mm and 6mm diameter bores for No. 7282 PYREX® straight bore PTFE stopcocks. For more information on PTFE stopcocks, please check the Care of Corning PYREX® PTFE Stopcocks under Technical Literature.

  • PYREX® Brand Stoppers

    Corning

    Full length stoppers, closed at bottom, with penny head Conform to ASTM Standard E 675

  • SYNTHWARE Glass Straight Bore Stopcock Plugs

    Kemtech America

    Stopcock Plug, Glass, Straight Bore, Synthware, Multiple Bore and plug sizes available.

  • One-Or-Two Place Air: Gas: Vacuum Stopcocks

    Water Saver Faucet Co.

    Pedestal-style single or double cock for mounting on top or on splash shield of bench Maximum recommended line pressure 69 kPa (10 psig) Chrome-plated brass Spring-loaded stopcocks take included snap-in buttons labeled GAS, AIR or VACUUM (specify when ordering) Serrated outlets are 48 mm long,…

  • Straight Bore Stopcocks with Glass Plug

    Wilmad-LabGlass - SP Scienceware

    These borosilicate glass straight bore stopcocks with straight sidearms include stopcock plugs and barrels that are ground to interchangeable Standard Taper specifications. Plugs (also sold separately) are solid and have a 1:10 taper.

  • SYNTHWARE PTFE Stopcocks, 120° Bore

    Kemtech America

    Stopcock, 120° Bore, PTFE, Synthware, Bore:2mm, Plug Size: 15.2/30, Stem OD: 8mm.

  • PYREX® Replaceable Tip for 2145-SO

    Corning

    This is a replaceable glass tip for the Polytetrafluorethylene (PTFE) non-locking stopcock assembly No. 2145-SO.

  • SYNTHWARE PTFE Double Oblique Bore Stopcocks

    Kemtech America

    Stopcock, 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.

  • Stopcock Plug, Inlet Feed

    Ace Glass

    Pressure gauges for monitoring pressure in several pieces of apparatus such as pressure vessels, pressure reactors & chromatography columns. Pressure ranges vary from 0-60psi and up to 0-400psi. Gauges have different NPT end fittings and internal materials, as well as various dial ranges. Some come…

  • Scienceware® Stopcocks

    Bel-Art - SP Scienceware

    2-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

  • SYNTHWARE High Vacuum Valves, T-Type

    Kemtech America

    High Vacuum Valve, T-Type, Synthware, Size: 0-12mm, Side Arm OD: 9mm.

  • SYNTHWARE High Vacuum Valve Plugs

    Kemtech America

    High Vacuum Valve Plug, Synthware, Size: 0-4, 0-8, and 0-12mm available, Stem Material: PTFE,O-rings Material: Viton.

  • SYNTHWARE Glass High Vacuum Double Oblique Bore Stopcocks

    Kemtech America

    Stopcock, 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.

  • Stopcock, Three-Way

    Ace Glass

    With 120 degree bore, solid plug.

  • Stopcock, High Vacuum, Hollow Plug

    Ace Glass

    High vacuum stopcock with hollow plug, for horizontal connections.

  • Replacement Components For 1:5 Taper PTFE Plugs

    Chemglass

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

  • Stopcock, T-Bore, 1:5 PTFE Plug

    Ace Glass

    With polished barrels. For plug, see 8228, PTFE plug.

  • PTFE Straight Stopcock Plugs

    DWK Life Sciences (Kimble)

    PTFE stopcock plug has a 1:5 taper PTFE  is chemically-resistant and self-lubricating

  • Double Vacuum/Gas Manifolds With PTFE Valves

    DWK Life Sciences (Kimble)

    For connecting inert gas and vacuum sources Grease-free, fine control is provided by 4 mm PTFE HI-VAC® valves. Sample contacts only PTFE and borosilicate glass. Beams are 1/2” (12.7 mm) O.D. with upper left and lower right ends open. Delivery ports are 9 mm O.D and the distance…

  • Flickit Valve, Riley

    Ace Glass

    Quick-open, valve-type stopcock with glass barrel, PTFE plug, and FETFE O-rings. Unique design allows introduction of particulates or capsules into a system using a rod or plunger. Barrel is angled with respect to the side arms, plug has corresponding

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