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Gravity filter tornado tube vs. hose question


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Home Forums Gear Forums Gear (General) Gravity filter tornado tube vs. hose question

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  • #3472163
    Alexander S
    BPL Member

    @cascadicus

    Quick question: Is there any real difference between running a tornado tube coupling between the Sawyer/ reservoir and the bottle or a 4 ft hose connected to the Sawyer?

    I am currently using a 4.5 ft length of hose to connect my Evernew and Sawyer, and I was under the impression that this length was required to create enough gravitational pull for filtration. If a tornado tube does the same trick ( as it seems to), do I even need to use a length of hose anymore?

    Opinions/ experiences much appreciated.

    #3472169
    Bob Shuff
    BPL Member

    @slbear

    Locale: SoCal

    i don’t see how the tornado tube would help reduce the need for height.  What do I know; I just googled tornado tube.  I did make a gravity setup using a Sawyer filter and I think I read 4′ was necessary, but as long as the filter isn’t degraded I think it could be shorter.

    #3472170
    Jon Fong / Flat Cat Gear
    BPL Member

    @jonfong

    Locale: FLAT CAT GEAR

    The larger the differential height, the greater the pressure difference which means that the flowrate will be higher.  Basic physics.

    #3472174
    Alexander S
    BPL Member

    @cascadicus

    I see people using no hose at all and just connect directly with the tornado tube. It seems they get the same filtration rate as with a 4 + ft hose.

     

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