Stopcocks

Stopcocks work as valves, serving to regulate, interrupt or completely stop the flow of a gas or liquid through piping, tubing or a faucet, with tubes attached to the stopcock’s female joint easily separated or connected by a turn of the stopcock. Stopcocks may be held in place by vacuum, rubber rings or clips. Glass stopcocks need stopcock grease for lubricating and sealing the plug and shell. Glass stopcocks with plastic plugs are sealed without grease but are less effective for high vacuum. Plastic plug glass stopcocks, however, work well for low vacuum applications.

61 – 75 of 224 results

Lenz Laborglasintrumente 3-Way Stopcocks, with PTFE Plug

Made of high quality materials. Each manufacturing step is tested through an extensive quality management system, based on DIN ISO 9001/EN 29001.

Pricing and Availability
Specifications

Includes	PTFE plug
Material	Borosilicate Glass (3.3)

DWK Life Sciences DURAN™ Two Way Stopcock, double oblique bore, ground, without key

Ground 2-way valves without plug.

Pricing and Availability
Specifications

For Use With (Application)	Suitable for installation in glass apparatus for vacuum applications, e.g. for the construction of steering lines (vacuum inert gas lines, nitrogen distribution rakes)
Width (Metric)	1.5 mm

DWK Life Sciences DURAN™ Two Way Stopcock, double oblique bore, complete with PTFE key

2-way tap with PTFE plug for grease free operation.

Pricing and Availability
Specifications

Material	Borosilicate Glass (3.3), PTFE
No. per Pack	10/Pk.
For Use With (Application)	Suitable for installation in glass apparatus for vacuum applications, e.g. for the construction of steering lines (vacuum inert gas lines, nitrogen distribution rakes)
Autoclavable	Autoclavable
Width (Metric)	1.5 mm

DWK Life Sciences DURAN™ Straight Valve, PRODURAN™

The perfect solution for dosing and controlling gases and liquids as a through put variant.

Pricing and Availability
Specifications

Material	Borosilicate Glass (3.3), PTFE
No. per Pack	10/Pk.
For Use With (Application)	Ideal for dosing and controlling gases and liquids; High vacuum suitability due to the thick-walled attachments; Suitable for installation in glass apparatus for vacuum applications, e.g. for the construction of steering lines (vacuum inert gas lines, nitrogen distribution rakes)
Autoclavable	Autoclavable