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Thread: Filter pressure gauge full of water

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    Filter pressure gauge full of water

    Hi everyone,

    I've attached a picture of my filter pressure gauge which is always full of water. I've been ignoring it and haven't had time to troubleshoot it. I can still kind of see of the numbers, and I do clean the cartridge filter on a regular bases, but I plan to troubleshoot it when I get some time off work soon.





    Just wanted to see if anyone had pointers before I start messing with it.

    Thank you
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    Round Above ground Cedar pool 18ft (approximately 30,000L = 8000 gallons), Hayward 2 speed 1.5HP pump, Hayward XStream Cartridge filter, Hayward Titanium HP50B 55,000 BTU heat pump, Hayward offline chlorinator, Big dipper ozonator.

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    Mod Squad pooldv's Avatar
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    Re: Filter pressure gauge full of water

    How about ordering a fantastic new oil filled gauge for 11 bucks from TFTestkits.net Not sure if they can ship to CA though.
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    Re: Filter pressure gauge full of water

    I don't think our standard gauges will fit that. We can ship non-Taylor stuff to Canada but I believe that is a proprietary gauge.

    Having a working gauge is really important and I encourage you to get it fixed soon....if you have no gauge, it's a bit like a physician with no stethoscope.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Mod Squad Bama Rambler's Avatar
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    Re: Filter pressure gauge full of water

    All that I can find out about it is that it's a 2" case diameter with a 1/4" threaded connection. I can't find it anywhere, but I seem to remember that it's bsp straight threads that are o-ring sealed.
    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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    Mod Squad Bama Rambler's Avatar
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    Re: Filter pressure gauge full of water

    I'd try unscrewing it and prying the cover off and removing the case and drying it out and putting it back together until you can get a replacement gauge.
    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
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Filter pressure gauge full of water

    This looks similar to mine and I end up buying a couple every year (I think they are $3-4 and they act like it), but I've never been able to find a good quality liquid filled gauge that is sized correctly. Basically, I've given up and just consider it disposable. I put a new one in and then within a month or two it leaks, though I can still read it. Soon enough, it fails (does not go to zero with pump off) so I replace.
    Dedicated TFPer since 2012 with recommended test kit
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    Re: Filter pressure gauge full of water

    Well, if it's 1/4" npt, a back-mount gauge should work well enough. Most of the good ones are a little bigger but I think they would rest on that "lip" Just fine.

    If you want to, unscrew it and take a pic of the threads and back side. A standard gauge just might work.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Filter pressure gauge full of water

    Thanks for all the replies.

    I finally got a bit of a breather from work and got around to cleaning the filter, and got the pressure gauge out. It's still full of water and I don't know how to go about troubleshooting it. I did put it back in after cleaning the filter and it is reading 12psi, so it seems to be working, but I'm not sure if i can trust it.

    I was in the pool store this past weekend looking at patio furniture, and the lady quoted me that this particular gauge costs around 20$ (I'm like whhaaaaaattt!!)
    I'm going to take it to the pool store and see if they can get me one for free, it's not even 1 year old (have to look up the warranty).

    Anyways here are some picture of the pressure gauge. Appreciate any input.

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    Round Above ground Cedar pool 18ft (approximately 30,000L = 8000 gallons), Hayward 2 speed 1.5HP pump, Hayward XStream Cartridge filter, Hayward Titanium HP50B 55,000 BTU heat pump, Hayward offline chlorinator, Big dipper ozonator.

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    April's Avatar
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    Re: Filter pressure gauge full of water

    Same thing happened to my old one that I got from the pool store. They have really nice ones on tftestkits.net for $10.95.
    18ft Round AG, Vinyl, 100LB Pentair Sand Filter, 1HP, June 2012, TF-100 w/SpeedStir

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    Mod Squad Bama Rambler's Avatar
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    Re: Filter pressure gauge full of water

    I really like the gauges that Tftestkits sells, but they're 2½" diameter and that gauge is 2".

    Since it's less than a year old you should try and get it replaced under warranty. You're going to need to keep that BSP to NOT adapter on the back of that gauge.
    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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    Re: Filter pressure gauge full of water

    If it were me, I'd just get a plastic coupling and nipple the same size as that black NPT adapter and use a TFT gauge and let it stick up above the tank (not recessed).
    18' x 38' Pool, 3' to 8' Depth
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    Re: Filter pressure gauge full of water

    Quote Originally Posted by robertmee View Post
    If it were me, I'd just get a plastic coupling and nipple the same size as that black NPT adapter and use a TFT gauge and let it stick up above the tank (not recessed).
    +1 on that idea. It's better to work good than look good....and those oil filled gauges work marvelous!*


    *with apologies to Billy Crystal
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    Re: Filter pressure gauge full of water

    Quote Originally Posted by robertmee View Post
    If it were me, I'd just get a plastic coupling and nipple the same size as that black NPT adapter and use a TFT gauge and let it stick up above the tank (not recessed).
    Quote Originally Posted by Thimble View Post
    +1 on that idea. It's better to work good than look good....and those oil filled gauges work marvelous!*


    *with apologies to Billy Crystal
    +2. Got my TFTestKits gauge installed and couldn't possibly be happier. A short adapter/extension (1/4 Male NPT to 1/4 Female NPT) could be threaded into your plastic coupler to get the gauge just far enough out to not cause problems.

    If you really want that high-speed-low-drag "flush-mount" look, you could always open the hole in the plastic filter case up to fit around the new gauge. (I'm actually kidding about that...it's probably not advisable...).
    25,000 gallon freeform gunnite/plaster, built in the 1970s/80s; Sta-Rite 9463004 575-lb. sand filter; Sta-Rite DuraGlas/Max-E-Glas (P2RA5F-125L) single-speed 1.5 HP pump, manufactured 12/1993 (1M93M).
    Helpful links: TFTestKits; Pool School; ABCs of Pool Water Chemistry; Chlorine/CYA Chart; PoolMath; SLAM - Shock Level And Maintain

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    Re: Filter pressure gauge full of water

    Bam!!!
    Finally fixed. Bought a new pressure gauge for 5$ from local pool store. Let's see how long this one lasts. (sorry can't post a picture because I've exceeded my size limit. Is the size limit per thread?)

    So now that I have accurate reading with the filter clean (it goes to 5 psi when pump running on low, and 12 psi when running on high), what's the magic number or percentage rise that I need to look for to tell me the pressure is too high and that I need to clean the filter?

    Thanks
    Round Above ground Cedar pool 18ft (approximately 30,000L = 8000 gallons), Hayward 2 speed 1.5HP pump, Hayward XStream Cartridge filter, Hayward Titanium HP50B 55,000 BTU heat pump, Hayward offline chlorinator, Big dipper ozonator.

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    Mod Squad zea3's Avatar
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    Re: Filter pressure gauge full of water

    20% rise in pressure is an indicator to clean the filter.

    You can use a photo hosting website such as photobucket.com to host your pictures. You just copy a link into your post when you want to add a picture.
    TFP Moderator
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    Re: Filter pressure gauge full of water

    Round Above ground Cedar pool 18ft (approximately 30,000L = 8000 gallons), Hayward 2 speed 1.5HP pump, Hayward XStream Cartridge filter, Hayward Titanium HP50B 55,000 BTU heat pump, Hayward offline chlorinator, Big dipper ozonator.

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    Re: Filter pressure gauge full of water

    PhotoBucket link is good.

    If you want to post the pic directly to the thread, click the [IMG] tag. It will automatically copy it, then you can paste it into your reply:

    25,000 gallon freeform gunnite/plaster, built in the 1970s/80s; Sta-Rite 9463004 575-lb. sand filter; Sta-Rite DuraGlas/Max-E-Glas (P2RA5F-125L) single-speed 1.5 HP pump, manufactured 12/1993 (1M93M).
    Helpful links: TFTestKits; Pool School; ABCs of Pool Water Chemistry; Chlorine/CYA Chart; PoolMath; SLAM - Shock Level And Maintain

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