Stopcocks

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  • Sciencware® Stopcocks

    Bel-Art Products

    2-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…

  • 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

  • One-Way Stopcock Valve Female Luer to Male Luer

    DWK Life Sciences (Kimble)

  • 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

  • PYREX® Brand Stoppers

    Corning

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

  • 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. 

  • PYREX Brand Stopcocks With Stopcock Plugs Of Glass

    Corning

    Plug bore x o.d. of arms appear in listings

  • 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…

  • PYREX® Replacement Retainer Clips for 1 or 2mm Straight 3mm Bore Stopcocks

    Corning

    These are replacement retaining clips for PYREX® straight bore glass stopcocks that have either a 1mm or 2mm diameter bore.

  • 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

  • Labeled Bench Service Stopcocks

    Water Saver Faucet Co.

    Of chrome-plated brass Spring-loaded ground key stopcock with index labeled gas, air or vacuum Maximum recommended gas line pressure 10 psi (69 kPa) Have 3/8” i.p.t. male thread and serrated outlet 48 mm long, which tapers from 13 mm to 6 mm. Outlet bore 3 mm without flange.

  • Replacement Stopcock Plug

    Ace Glass

    Replacement 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.

  • SYNTHWARE Plug Retention Kits

    Kemtech America

    Plug Retention Kit, Stopcock, Synthware, Stainless Steel, Multiple Plug Sizes Available.

  • Balloon Adapters

    Wilmad LabGlass

    These Air-Tite borosilicate glass adapters are designed with a T-bore stopcock for addition or venting inert atmospheres by attaching a balloon to one of two stems. Choose from different sized Standard Taper joints and plug type. IG-22 has a 4mm glass stopcock while IG-23T has a 4mm 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

  • PYREX® Plain Bore Rotaflo® Three-Way Stopcock

    Corning

    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®…

  • Stopcock, High Pressure, Oblique Bore

    Ace Glass

    Three-way high pressure oblique bore stopcock with solid plug.

  • PYREX Brand Stopcocks

    Corning

    Valves, In-Line, Rotaflo® For vacuum or pressure work Borosilicate glass, with Teflon® stem providing chemically inert seal Require no lubrication Permit precide control of liquid or gas flow at temperatures from -40°C to +200°C Maximum vacuum 10 -8 torr…

  • Scienceware® Stopcocks

    Bel-Art Products

    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

  • HI-VAC® Straight Valves with Tip O-Rings and CTFE Plug

    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 …

  • Teflon Double Oblique Bore Stopcock

    DWK Life Sciences (Kimble)

    With nut, washer and O-ring Two mm bore

  • Leash

    Plasticoid

    For securing stoppers to neck of vessel or stopcock plugs to shell Rubber strip, 100 mm long x 5 mm wide, has hole 10 mm diameter at each end, expandable to 28 mm

  • Stopcock, 2 mm

    DWK Life Sciences (Kimble)

    As supplied with 1983J70 and J76 Kimble Economy Burets Plug bore two mm Also for replacement on Kimble 17800 and 17810 series Chromatography Columns and Kimble 29050-H and 29060-H series Separatory Funnels.

  • HiVac Valve with Straight PTFE Plug

    Wilmad LabGlass

    These high vacuum valves have a barrel with two side arms attached at a 180° angle to each other and on the same plane. The borosilicate glass valve body features a precision-formed tapered valve seat and a precision tooled external thread. The design of cap (made of Delrin®) and valve stem…

  • Rotameter, Needle Valve, Compact, Ace-Thred

    Ace Glass

    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…

  • SYNTHWARE High Vacuum Valves, 180 Degree

    Kemtech America

    High Vacuum Valve, 180 Degree, Synthware, Size: 0-4 or 0-8mm available, Side Arm OD: 9mm.

  • 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.…

  • PYREX® Straight Bore Stopcocks

    Corning

    Plug has 1:5 taper, permitting precise control of plug tension Lubrication not required Knurled nut and washer are Teflon O-ring is Buna N synthetic rubber Plug bore x o.d. of arms appear in listings

  • Polypropylene Stopcock with PTFE Plug

    Bel-Art Products

    Stopcock to control airflow in a vacuum desiccator, for use with Bel-Art Scienceware desiccator models F42025, F42020, F42010, F42012, F42022 and F42027 Body constructed of polypropylene for strength, thermal performance, and solvent resistance, and plug and washer of polytetrafluoroethylene…

  • Straight Bore Stopcocks with Glass Plug

    Wilmad LabGlass

    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.

  • Stopcock Assembly

    Thermo Scientific Nalgene

    Phase 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…

  • Three-way High Vacuum Stopcock

    Ace Glass

    O-Rings available. Three-way high vacuum stopcock for use in combining materials in proportion or as common feed distributed in proportion. Easy action plugs act independently of each other and are connected to a common tubulation through a variable opening. Supplied with FETFE O-Rings. Stem O.D.…

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