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Thread: D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

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    D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

    I bought the PSI Gauge at TFTestkits.net and installed it. It's working great but I have a question about a sticker that's on the Gauge referencing a pressure bleed cap to use it if the PSI reading is inaccurate.

    How often, if at all, is it necessary to bleed off any internal pressure build-up with this valve?
    - Pool Type: 15k Gal Gunite IG non-SWG / Built 1988
    - Pump: Pentair Challenger / Sweep Pump: Letro Model LA01N .75HP Single-speed / 6 hrs-day (1 turnover)
    - D.E. Filter: OEM: Nautilus (Pentair) #NS 36 / 36 Sq Ft / D.E. Charge: 3.6 Lb
    - Pentair 4-wheel Sweep LL505G - Booster Pump runs ~2 hrs/day

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    Re: D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

    I cut the bleeder tip off mine per instructions so it stays equalized. I think that may have changed, but no sure. I would think once a month or anytime you feel it's off would work.
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    Re: D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

    I did not cut mine off. I think I opened it when I got it, but not since then.
    Jason, TFP Moderator
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    Re: D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

    Thanks for the info. I didn't see instructions with my Gauge mentioning the tip/cut. Perhaps they're shipping now without that info included.

    When I first looked at the Gauge before installing it, I removed the cap momentarily but when Glycerin began to flow out from the bleed port, I re-installed the cap quickly.
    - Pool Type: 15k Gal Gunite IG non-SWG / Built 1988
    - Pump: Pentair Challenger / Sweep Pump: Letro Model LA01N .75HP Single-speed / 6 hrs-day (1 turnover)
    - D.E. Filter: OEM: Nautilus (Pentair) #NS 36 / 36 Sq Ft / D.E. Charge: 3.6 Lb
    - Pentair 4-wheel Sweep LL505G - Booster Pump runs ~2 hrs/day

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    Patrick_B's Avatar
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    Re: D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

    Yea, there was something about this recently. Seemed normal to me when I got mine. Other high quality gauges come with bleeders so it just seemed natural when they said slice the tip.
    TFP Moderator
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    Re: D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

    You should only open that "equalizer" when your OFF pressure is something other than zero. Loss of some of the glycerin is no big deal but it sure is "slick" feeling. Do not cut the tip.....why the manufacturer put that on some of them is beyond me nor could the distributor answer it for me. No real harm in doing so but there is no real point, either.
    Dave S.
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    Re: D.E. Filter PSI Guage 0-30 PSI Glycerin-filled - Question

    If you don't cut the tip off, you should actually vent every time you read the gauge. Large swings in air temperature can result in fairly large changes in PSI (1-2). Most of the time when I vent the gauge, it changes by almost 1 PSI.
    Mark
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