Stopcocks

Photo of Nalgene 6470 Three-way Stopcock-Polypropylene with PTFE Plug

Nalgene 6470 Three-way Stopcock-Polypropylene with PTFE Plug. Three tubulated outlets arranged in T shape; connect any two or all three arms of the stopcock. Accepts 1/4" through 7/16" tubing. Non-seizing, leakproof plug.

(Sample Photo Displayed. Individual items may differ from the image shown.)

 

Photo of CORNING 7282 PYREX® Straight Bore Stopcocks with PTFE Stopper Plug

These PYREX® straight bore stopcocks have a PS taper PTFE plug that fits into a micro-finish barrel. Freezing problems are reduced and greasing is eliminated. The very fine threads on the plug and nut let you "feel" the position of the plug. Sidearm seals are heavy and strong for greater durability and easier handling.

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Photo of Nalgene 6460 Two-Way Stopcock-Polypropylene with PTFE Plug

Nalgene 6460 Two-way Polypropylene Stopcocks with PTFE Plugs permit reliable, accurate liquid flow control in liquid handling systems. They are ideal for use in developing in-house fluid transfer systems for one-way fluid path for accurate filling or dispensing. The two-way stopcocks feature serrated tubulation on each end that accept 5/16″ through 1/2" tubing. Autoclavable.

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Photo of Corning 7280 PYREX® Straight Bore Stopcocks with Solid Standard Taper Stopper Plug

Closely controlled grinding techniques allow this general use PYREX® stopcock to be used at pressures down to 10{-4} torr (mm Hg) when correctly greased. For additional strength, sidearm seals are heavy and uniform.

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Photo of Corning 7473 PYREX® Plain Bore Rotaflo® Two-Way 90° Angle Stopcocks

These high performance Rotaflo® 90° angle stopcocks 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 flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nuts. The seal is visible when open or closed.

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Photo of Corning 7470 PYREX® Rotaflo® Two-Way In-Line Stopcocks with PTFE Plug

These high performance Rotaflo® in-line stopcocks 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 flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nuts. The seal is visible when open or closed.

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Photo of Corning 7680 PYREX® Replacement Standard Taper Straight Bore Glass Stopcock Plugs

These are replacement glass stopcock plugs for No. 7280 PYREX® straight bore glass stopcocks. Since several different bored sizes may be drilled through any given size of plug, the approved method of designating the size of a glass stopcock is by bore diameter only. Interchangeable ground glass stopcocks are not intended for high vacuum apparatus or for use with light liquids. When, by constant abrasion, a stopcock has become so worn that the shell is enlarged, or the plug is diminished in size, we recommend that you replace the plug.

Photo of Corning 7681 Replacement PTFE Standard Straight Bore Stopcock Plug Assembly

These are replacement Polytetrafluorethylene (PTFE) Standard stopcock plug assemblies for No. 7282 PYREX® straight bore PTFE stopcocks.

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Photo of Kimble 41500F KIMAX PTFE Straight Bore Stopcock Plugs

Kimble 41500F KIMAX PTFE Straight Bore Stopcock Plugs are for separatory funnels and funnel-fill burets requiring PS PTFE stopcock plugs. Plugs are furnished with nut, rubber washer and washer.

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Photo of KIMBLE 41502T Hi-Temp PTFE Stopcock Plug for Separatory Funnels and Burets

Handle and nut are color coded red to indicate resistance to higher temperature 180° C applications. Replacement for separatory funnels and funnel-fill burets requiring standard taper PTFE stopcock plugs. Plugs are furnished with nut, rubber washer and washer. Designed from ASTM Specification E911.

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Photo of KIMBLE 41530F KIMAX PTFE Three-Way 2mm Stopcock Plug

Kimble 41530F-2 KIMAX PTFE Three-Way 2mm Stopcock Plug. Replacement for reservoir fill burets and pipets requiring standard taper PTFE three-way stopcock plugs. Plugs are furnished with a nut, rubber washer, and HDPE washer.

(Sample Photo Displayed. Individual items may differ from the image shown.)