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Thread: flow meter affect on the flow

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    Diver's Avatar
    Join Date
    May 2011
    South of Boston

    flow meter affect on the flow

    I'm curious as how much affect on the flow a pilot tube flow meter has? 1.5" pipe blue and white flowmeter (F-30150p, 20-100 GPM range) has a 1"x5/8" pilot sticking into a 1.5" tube:

    so basically it would cover 35% of the pipe and should have a measurable impact on the flow. i looked thru several pdf on white and blue web site, but found no information on this. and I wonder if this taken into account and the scale on the meter reflects it?
    26K In-ground Vinyl Pool | Hayward DE4820/SP0710XR50 filter | 1.125 HP Dual Speed Hayward Super Pump | Aquasol Solar

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: flow meter affect on the flow

    A small intrusion like that will have very little effect on the flow through the system.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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