Stopcocks

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Stopcocks

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  • Teflon Straight Bore Stopcocks

    Kimble

    Complete with nut, O-ring, washer For replacement in glassware originally supplied with Teflon straight bore plugs

  • 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 Stopcock Valve, 2 Female Luers to Male Luer

    Kimble

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

  • 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.

  • 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

  • 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 Brand Stopcocks With Stopcock Plugs Of Glass

    Corning

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

  • 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. …

  • 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.

  • PTFE Straight Stopcock Plugs

    Kimble

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

  • Teflon Double Oblique Bore Stopcock

    Kimble

    With nut, washer and O-ring Two mm bore

  • 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…

  • Adapter, Sampling

    Ace Glass

    With standard taper 24/40 joints and 1:5 solid PTFE stopcock plug connected to side of apron for removing distillate or sample. Plug bore is 2mm. Approximate capacity 125mL. Code -04 has #7 Ace-Thred after stopcock, code -29 has plain tubing.

  • Stopcock, 2 mm

    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.

  • Valve High Vac PTFE Sz 8

    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 …

  • 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.

  • 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

  • Adapter, Stopcock, Hose connection, PTFE plug

    Ace Glass

    Stopcock adapter featuring either a bent or straight hose connection and a PTFE plug.

  • Adapter, Stopcock, Hose connection

    Ace Glass

    Stopcock adapter featuring either a bent or straight hose connection and a glass plug.

  • Adapter, PTFE Stopcock, Inner Drip Tip

    Ace Glass

    Straight connecting PTFE stopcock adapter with standard taper joints. Bottom joint connection has an inner drip tip tube.

  • PYREX® Replaceable Tip for 2145-SO

    Corning

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

  • 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.

  • 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.

  • 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.

  • One-Way Stopcock Valve Female Luer to Male Luer

    Kimble

  • Valve High Vac PTFE Sz 4

    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 …

  • 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.…

  • 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…

  • PYREX® Brand Stoppers

    Corning

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

  • Double Vacuum/Gas Manifolds With PTFE Valves

    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…

  • Needle Valves, V-Point

    Scott Specialty

    With forged brass body, sharp stainless steel needle and small opening at the seat for accurate control of small flow of gases at inlet pressures up to 3000 psig at 70°F (20.7 MPa at 21.1°C) Maximum temperature rating: 450°F (232°C) Useful also for water, compressed air…

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