Stopcocks Products (186)

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  • Thumbnail Image for One-Way Stopcock Valve Female Luer to Male Luer
  • Thumbnail Image for Sciencware® Stopcocks

    Bel-Art - SP Scienceware

    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 is...

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

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

  • Thumbnail Image for One-Or-Two Place Air: Gas: Vacuum Stopcocks

    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,...

  • Thumbnail Image for Three-Way Polypropylene Stopcocks with Teflon Plug

    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

  • Thumbnail Image for Stopcock, Polyethylene Miniature

    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.

  • Thumbnail Image for 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

  • Thumbnail Image for Stopcock, High Vacuum, Easy Action Plug

    High vacuum straight thru stopcock available with several types of Easy Action plugs including bakeable PTFE, PTFE stem with glass filled PTFE threads, and glass with Nylon handle, for allowing smooth adjustment. A variety of replacement items are avai

  • Thumbnail Image for PYREX Brand Stopcocks

    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 (10 -6 Pa) Plastic control...

  • Thumbnail Image for PYREX® Straight Bore Stopcocks

    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

  • Thumbnail Image for PYREX® Brand Stoppers

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

  • Thumbnail Image for PTFE Straight Stopcock Plugs

    DWK Life Sciences (Kimble)

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

  • Thumbnail Image for 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.

  • Thumbnail Image for Double Vacuum/Gas Manifolds With PTFE Valves

    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 between the...

  • Thumbnail Image for PYREX® Plain Bore Rotaflo® Three-Way Stopcock

    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...

  • Thumbnail Image for Replacement Stopcock Plug

    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.

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