Stopcocks

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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…

  • Teflon Straight Bore Stopcocks

    Kimble

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

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

    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

  • 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

  • Teflon Double Oblique Bore Stopcock

    Kimble

    With nut, washer and O-ring Two mm 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.

  • 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.

  • 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…

  • 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 …

  • PYREX® Brand Stoppers

    Corning

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

  • One-Way Stopcock Valve Female Luer to Male Luer

    Kimble

  • 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

  • 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 …

  • 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.

  • PYREX Brand Three-Way Stopcocks

    Corning

    Side arms at 90° to third arm With Standard Taper stopcock plug with T-shaped bore Plug bore, o.d. of arms appear in listings

  • 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…

  • PTFE Straight Stopcock Plugs

    Kimble

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

  • 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, 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.

  • 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.

  • PYREX Brand Stopcocks With Stopcock Plugs Of Glass

    Corning

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

  • 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

  • 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…

  • 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,…

  • 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…

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

    Ace Glass

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

  • 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.

  • Stopcock, High Vacuum, Easy Action Plug

    Ace Glass

    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

  • Adapter, Stopcock, Hose Connection, Glass or PTFE plug

    Ace Glass

    Stopcock adapter featuring either a bent or straight hose connection and a glass or PTFE plug. See Ace 8223 for replacement glass plug and Ace 8224-04 for PTFE plug.

  • Adapter, Stopcock and syringe port

    Ace Glass

    Standard taper adapter with 8-425 gpi threaded top and a 2mm bore stopcock with a ptfe plug. Syringe port is supplied with a cap and septum.

  • 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®…

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