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MSR Water Filter Maintenance Kit

    MSR Water Filter Maintenance Kit

    This small, complete maintenance kit is for the MSR Waterworks and Miniworks filters. See details

    • $19.95

    Item # 407235

    REI Members get back an estimated 10% on this item as part of their annual member refund.

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    This small, complete maintenance kit is for the MSR Waterworks and Miniworks filters.

    Product size and color

    This small, complete maintenance kit is for the MSR Waterworks and Miniworks filters.

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    This small, complete maintenance kit is for the MSR Waterworks and Miniworks filters.

    • Small enough to take into the field on long or short trips; contents are packaged into a small plastic case
    • Contains all necessary maintenance parts, including O-rings, inlet foam, inlet valve, outlet cap and silicone lubricant

    Please note: MSR products can only be shipped to U.S. addresses.

    Made in USA.

    Item 407235

    Members: earn a
    $20 bonus card

    When you spend $100 April 14—29

    Single-use bonus card redeemable by
    REI members MAY 2—12, 2014.

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    MSR Water Filter Maintenance Kit Specs
    Best use

    MSR Water Filter Maintenance Kit

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    MSR Water Filter Maintenance Kitis rated1.5out of5by2.
    Rated1out of5byfromMissing piecesThis product *should* provide all the key components required to maintain the MSR MicroFilter. It doesn't. It does NOT contain the Umbrella Valve that, in my experience, is the component most prone to failure on the MSR MicroFilter. The umbrella value acts to maintain water pressure inside the chamber holding the ceramic core - it is therefore critical to ensuring water is pushed through the filter. Having it fail means that you are unable to maintain adequate water pressure. You will know when this is happening when you pump the handle and the MSR water clear water chamber (at the top of the unit) gradually fails to fill with water yet and there is apparent (and growing) pressure in the system. This is happening because both the clear chamber and ceramic chamber are becoming pressurized (ie the valve is leaking air back into the clear chamber) and you are unable to draw the next pump of water into the filter - drawing up water is necessary because, in the subsequent push down, it is the effective incompressibility of water that pushes it through the filter (if the clear chamber contains just air then the air is effectively just 'squeezed' and little/no water comes out of the filter). Net net: if you were expecting to buy this product to give you a complete set of replacement pieces for the MSR Micro Filter then think again. It does contain the other seals and maintenance pieces you might otherwise need. The umbrella valve is available separately from other retailers (unfortunately not from REI). Note to REI / REI customers - many thanks helping test out my water filter and for replacing my filter without charge. 5*s for you guys as always.
    Date published: 2013-08-11
    Rated2out of5byfromWhere's the umbrella valve.I find it odd that this is marked "everything you need". When it is missing a very important part. The umbrella valve. Can't do much without it, so it is not really "everything you need".
    Date published: 2013-06-22

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