How to use Flat Out water filter shut off valve (and why use a good quality filter)

Overview of Flat Out's Stop Valve developed for BEST inline caravan filters.
This added convenience item is excellent for tank filling with Flat Out hoses and B.E.S.T. filters. The Flat Out Filter Stop Valve for water filters offers quicker, smoother and less messy tank filling.
Zoe also discusses the main reasons she loves and recommends BEST filters for caravan use.
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