Stopcock

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Stopcock
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  • 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.

  • 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 rating…

  • 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

  • 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

  • Adapter, Adjustable Flow Stopcock

    Ace Glass

    Adjustable flow stopcock with standard taper 24/40 joints.

  • One-Way Stopcock Valve Female Luer to Male Luer

    DWK Life Sciences (Kimble)

  • Stopcock Assembly

    Thermo Scientific Nalgene

    …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 excellent…

  • 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.

  • 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.

  • Thomas® Lubriseal Stopcock Grease

    Thomas®

    …ground glass joints, glass and metal stopcocks and valves, and for sealing desiccators, anaerobic culture jars and similar utensils Its mobility in film-like quantities makes it excellent not only for lubricating, but for preventing the freezing of stopcocks, ground joints, etc., which are…

  • Adapter, Vacuum, with Stopcock

    Ace Glass

    Vacuum adapter with 2mm bore stopcock on side arm.

  • Stopcocks

    United Scientific Supplies

    These leak-proof, economical polypropylene stopcocks have a PTFE plug and serrated ports that accept tubing from 6mm to 10mm in diameter. 

  • Adapter, Flow Control Inlet

    DWK Life Sciences (Kimble)

    Stopcock available with glass or PTFE plug For regulating the flow of gases or liquids into reaction systems. Adapter consists of male standard taper joint fittng with stopcock and a 90° angle male hose barb. Thomas numbers 5738D01, D03, D15, and D17 take 1/4" i.d. flex tubing; Thomas…

  • 1-Way Stopcocks

    Cadence Science

    Cadence Science® stopcocks are precision-machined, individually lapped, and carefully mated to maintain pressure characteristics. These stopcocks are easily integrated with other stopcocks, manifolds, adapters, tubing, needles, and glass syringes. Made from nickel plated brass or…

  • 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® 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

  • PYREX® Plain Bore Rotaflo® Three-Way Stopcock

    Corning

    …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 design permits fine…

  • PTFE Straight Stopcock Plugs

    DWK Life Sciences (Kimble)

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

  • 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 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…

  • Stopcock Plug 2

    Corning

    These are replacement glass No. 2 Standard Taper stopcock plugs with 2mm diameter bores for No. 7280 PYREX® straight bore glass stopcocks.

  • 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.

  • 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

  • PYREX Brand Stopcocks With Stopcock Plugs Of Glass

    Corning

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

  • 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.…

  • Stopcock, Three-Way, 1:5 PTFE Plug

    Ace Glass

    Oblique bore with polished barrels. For plug only, see 8226.

  • PTFE Stopcock Assy 2.8mm

    DWK Life Sciences (Kimble)

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

    Water Saver Faucet Co.

    …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, tapering from 14 mm to 7 mm.…

  • 3-Way Stopcocks

    Cadence Science

    Cadence Science® stopcocks are precision-machined, individually lapped, and carefully mated to maintain pressure characteristics. These stopcocks are easily integrated with other stopcocks, manifolds, adapters, tubing, needles, and glass syringes. Made from nickel plated brass or…

  • PYREX® Economy Grade Burets

    Corning

    With replaceable components Corning 2116 series Tooled tops Screw thread stopcock Reduce replacement costs with replaceable components. Tooled tops and bottoms. White enamel graduations. Ground glass tip. Plain top.

  • Stopcock Assy 25ml

    Thermo Scientific Nalgene

    Pack of 2 Stopcock Assemblies, 25 mL

  • Stopcock Plugs, T-Bone

    Ace Glass

    T-Bore stopcock plugs available in borosilicate or 1:5 PTFE.

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