Chemistry Stopcocks

A 1:5 taper PTFE plug having double "V", 90º bores to connect opposite sets of adjacent arms. Configuration of stopcock allows it to be used in a system to obtain reversal of flow.

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...

Cap style stopper to be used with apparatus having a spherical ball joint. For clamp see CG-150. Enhance the accuracy and control of your lab's fluid and gas management with the SYNTHWARE High Vacuum Valves, Three-Way, PTFE-Protected. These valves are designed to direct the flow of gases or fluids...

      The straight high-vacuum valve without tip O-ring is for use in vacuum applications up to 5×10-7torr.   Designed with a precision external thread for fine control Valve can be used as a bleed up to ¹/2 turn Full open is at 1¹/2 turns Primary seal is made...

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

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

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

TUBES, CENTRIFUGE, 50ML, Centrifuge tube with a short, conical bottom and 24-415 GPI threaded top. Fits I.E.C. shield number 320. Supplied complete with a Poly-Seal® polypropylene lined phenolic screw cap. TEST TUBE TONGS, Tongs are made of zinc coated steel, 6" overall length. Spring...

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...

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

Set comes with 8 sizes. Stoppers are to be used with Buchner and Fritted glass funnels. Ideal for managing liquid or gas flow in precision applications, this stopcock is outfitted with a double oblique bore design for enhanced control. Constructed from durable Teflon, it ensures a high degree of...

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

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.

Hi-vac valve with two sidearms sealed to the barrel at a 90° angle to one another. Designed with a precision external thread for fine control.

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

Stopcock Plug, Double Oblique, PTFE, Synthware, Bore: 2 or 4mm available, Plug Size: 12.9/44 or 14.4/44 available.

3-way stopcock with T-bored solid glass plug. See Ace 8228 family for replacement plugs. The Three-Way T-Bore Stopcock allows for versatile fluid direction in laboratory applications. Its design facilitates easy switching between different flow paths, enhancing the flexibility of fluid management....

Stopcock Plug, Metering, PTFE, Synthware, Bore: 2 or 4mm available, Plug Size: 11/25 or 15.2/30 availabe, with threaded PTFE needle valve for the fine control of flow through the bore of the stopcock plug.

The J. Young high-vacuum PTFE valve helps in controlling the atmosphere when using air-sensitive materials.Features: •PTFE piston with unique PTFE-sheathed elastomer O-ring seals •Grease-free glass-to-PTFE seals •High-vacuum to 10-6 torr

Cap style stopper for use with inner joints. For researchers seeking precision and reliability, these SYNTHWARE Plug Retention Kits are a reliable choice. Designed for high-quality performance, they provide secure and efficient control of liquid or gas flow in various laboratory applications. These...

PTFE TIPHi-vac valve with two sidearms sealed to the barrel at a 90° angle to one another. Designed with a precision external thread for fine control.

The Thermo Scientific Nalgene Stopcock Assy 25ml is designed for precise control over fluid flow in laboratory settings. This durable assembly is crafted from high-quality materials to ensure longevity and performance. Its design minimizes leaks and provides reliable operation for various...

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

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 Non-rotating PTFE...