Stopcocks and Keys
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  1. Burette repair stopcock
    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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  2. Pyrex® Stopcock, burette repair, straight bore, PTFE key
    Pyrex® Stopcock, burette repair, straight bore, PTFE 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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  3. Pyrex® Stopcock, funnel repair, straight bore, PTFE key
    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...
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  4. Pyrex® Stopcock, high vacuum, double bore, glass key
    Pyrex® Stopcock, high vacuum, double bore, glass key
    These double bore high vacuum stopcocks are available in three different bore sizes.
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  5. Pyrex® Stopcock, high vacuum, pump pattern, right angle, glass key
    Pyrex® Stopcock, high vacuum, pump pattern, right angle, glass key
    This right angled vacuum stopcock is ideal for the connection of a vacuum line to a pump.
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  6. Pyrex® Stopcock, high vacuum, safety pattern, single-bore, glass key
    Pyrex® Stopcock, high vacuum, safety pattern, single-bore, glass key
    Innovative glass vacuum stopcock which is designed to prevent the accidental removal of the key whilst under ...
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  7. Pyrex® Stopcock, high vacuum, straight bore, glass key
    Pyrex® Stopcock, high vacuum, straight bore, glass key
    The barrel and key of these high vacuum stopcocks are numbered to ensure that the correct key is matched to t...
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  8. Pyrex® Stopcock, high vacuum, T-bore, 3-way, glass key
    Pyrex® Stopcock, high vacuum, T-bore, 3-way, glass key
    The keys and barrels of these stopcocks are precision ground together for optimum vacuum performance.
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  9. 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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  10. Pyrex® Stopcock, plain arms, straight bore, glass key
    Pyrex® Stopcock, plain arms, straight bore, glass key
    Complying to the requirements of DIN 12541, these borosilicate glass stopcocks have a glass key.
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  11. 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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  12. Pyrex® Stopcock, plain arms, T-bore, 3-way
    Pyrex® Stopcock, plain arms, T-bore, 3-way
    Manufactured from Pyrex® borosilicate glass with PTFE keys, these stopcocks have excellent chemical resistan...
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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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