Stopcocks and Keys
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  1. Rotaflo® High Performance stopcock, plain side-arms, straight pattern
    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...
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  2. Rotaflo® High Performance stopcock, plain side-arms, right angle pattern
    Rotaflo® High Performance stopcock, plain side-arms, right angle pattern
    Right angle pattern stopcocks available with 3mm, 6mm and 10mm bore stopcock keys.
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  3. Rotaflo® High Performance stopcock, three way
    Rotaflo® High Performance stopcock, three way
    These three way high vacuum stopcocks utilise two Rotaflo® High Performance stopcocks with either 3mm or ...
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  4. Spare parts for Rotaflo® High Performance stopcocks
    Spare parts for Rotaflo® High Performance stopcocks
    The Rotaflo® replacement stopcock keys comprise the PTFE key and separate polypropylene locking rings.
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  5. Rotaflo® General Purpose stopcock, plain side-arms, straight pattern
    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...
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  6. Rotaflo® General Purpose stopcock, plain side-arms, right angle pattern
    Rotaflo® General Purpose stopcock, plain side-arms, right angle pattern
    With a borosilicate glass and PTFE pathway, these stopcocks are highly chemically resistant.
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  7. Rotaflo® General Purpose Burette repair stopcock
    Rotaflo® General Purpose Burette repair stopcock
    Used to repair broken burettes, these stopcocks have one plain side-arm and one capillary side-arm, which is ...
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  8. Spare parts for Rotaflo® General Purpose stopcocks
    Spare parts for Rotaflo® General Purpose stopcocks
    Replacement 3mm, 6mm and 10mm bore General Purpose Rotaflo® stopcock keys.
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  9. Pyrex® Stopcock, plain arms, straight bore, PTFE key
    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...
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  10. Pyrex® Stopcock, plain arms, double bore, PTFE key
    Pyrex® Stopcock, plain arms, double bore, PTFE key
    This double bore stopcock is available with a 2.5mm bore stopcock key.
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  11. Pyrex® Stopcock, plain arms, T-bore, 3-way, PTFE key
    Pyrex® Stopcock, plain arms, T-bore, 3-way, PTFE key
    Manufactured from Pyrex® borosilicate glass with PTFE keys, these stopcocks have excellent chemical resis...
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  12. Pyrex® Stopcock, burette repair, straight bore, PTFE or glass key
    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 ...
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The features of our Stopcocks

With stopcocks for high vacuum work through to stopcocks suitable for general use, the SciLabware 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.

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