Stopcocks and Keys - Equipment & Tools

Rotaflo^® High Performance stopcock, plain side-arms, straight pattern

These straight pattern Rotaflo^® High Performance PTFE stopcocks are individually tested for 10-9 Torr vac...
View Product
Rotaflo^® High Performance stopcock, plain side-arms, right angle pattern

Right angle pattern stopcocks available with 3mm, 6mm and 10mm bore stopcock keys.
View Product
Rotaflo^® High Performance stopcock, three way

These three way high vacuum stopcocks utilise two Rotaflo^® High Performance stopcocks with either 3mm or ...
View Product
Spare parts for Rotaflo^® High Performance stopcocks

The Rotaflo^® replacement stopcock keys comprise the PTFE key and separate polypropylene locking rings.
View Product
Rotaflo^® General Purpose stopcock, plain side-arms, straight pattern

The rotary needle valve design of these Rotaflo^® General Purpose PTFE stopcocks allows the fine single dr...
View Product
Rotaflo^® General Purpose stopcock, plain side-arms, right angle pattern

With a borosilicate glass and PTFE pathway, these stopcocks are highly chemically resistant.
View Product
Spare parts for Rotaflo^® General Purpose stopcocks

Replacement 3mm, 6mm and 10mm bore General Purpose Rotaflo^® stopcock keys.
View Product
Pyrex^® Stopcock, plain arms, straight bore, PTFE key

The combination of highly polished stopcock barrels and self-lubricating PTFE keys avoid the need to grease t...
View Product
Pyrex^® Stopcock, plain arms, double bore, PTFE key

This double bore stopcock is available with a 2.5mm bore stopcock key.
View Product
Pyrex^® Stopcock, plain arms, T-bore, 3-way, PTFE key

Manufactured from Pyrex^® borosilicate glass with PTFE keys, these stopcocks have excellent chemical resis...
View Product
Pyrex^® Stopcock, burette repair, straight bore, PTFE or glass key

These stopcocks can be supplied with either a PTFE or glass stopcock key and have one plain side-arm and one ...
View Product
Pyrex^® Stopcock, funnel repair, straight bore, PTFE key

These stopcocks have one flared side-arm to connect to the base of the funnel body and one plain side-arm wit...
View Product

The features of our Stopcocks

With stopcocks for high vacuum work through to stopcocks suitable for general use, the DWK Life Sciences range contains stopcocks for most applications. The Rotaflo^®High Performance stopcocks feature a PTFE needle valve and can operate over a pressure range +1bar to 10-9 Torr. The Rotaflo^® General Purpose stopcocks are more suitable for general use and feature the same PTFE needle valve that is used on a range of Pyrex^®, MBL^®and Quickfit^® laboratory glassware products. Pyrex^® branded stopcocks are available with both glass and PTFE stopcock keys. All Rotaflo^® and Pyrex^® stopcocks are available in different designs including straight pattern, right angle and three-way. We also offer stopcocks assemblies to repair burettes and separating/dropping funnels.