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Thread: Newbie - No Pressure Gauge Reading?

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    delirium330's Avatar
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    Newbie - No Pressure Gauge Reading?

    Hi all, new member and new pool owner. Just reading through Pool School and all of the other content here so thanks for all of the useful information.

    My current problem is that when I first bought the home/pool the home/pool inspector noticed that the filter pressure gauge was reading zero and he told me that the gauge probably just needed to be replaced. My filter is a S8M150 (see signature line for other pool details). So I initially cleaned the main cartridge filters (2), pump baskets, skimmer, etc. I put it all back together and still got a zero pressure reading. I subsequently bought a new pressure gauge (gauge only, not the entire housing):

    http://www.amazon.com/dp/B00B2T80WI/ref ... 1_ST1_dp_1

    After I replaced with the new gauge I am still getting a zero pressure reading. I didn't follow any specific protocol when replacing with the new gauge, i.e. I basically just unscrewed the pump baskets a bit so air started to come out and depressurize the system while at the same time unscrewing the air/pressure cap on top of the filter to let some more air out until it was completely dpressurized. I then removed old gauge, put some latex tape on the fitting and screwed the new gauge on, then turned the pumps back on.

    Do I need to replace the entire housing for the pressure gauge/air release thing on the top of the filter or did I re-pressurize the system in the wrong way? Since then I've been running the pumps, pool cleaner Polaris vacuum, etc. and haven't noticed any issues except that whenever the pumps turn on a small bit of water drips/leaks out of the filter (middle brackets area), but stops after the 1-2 seconds from the pumps initially turning on.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Mod Squad jblizzle's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Welcome to TFP!!!

    First, make sure you did not accidentally cover the back of the gauge with the tape. Assuming that is fine, you need to make sure the hole is clear into the filter so that it can actually sense the pressure ... you may need to look from inside and outside. There should be no reason to have to replace more than the gauge.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Thanks, any issues with the way I went about depressurizing or re-pressurizing? I thought I read somewhere about turning the pumps on with the filter air vent open until water comes out? I'll take the new gauge off and inspect... if clogged up any good ideas to clean it or perhaps buy a new housing?
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Mod Squad jblizzle's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    As soon as the pump is off, the system is not pressurized. You can open the air relief to get the filter to drain so you do not get your shoes wet when you take the top off the filter to inspect for debris.

    When you get the filter back together, just leave the air valve open, turn the pump on until water is coming out and then close the air valve ... this ensure the air is removed from the system. Actually no harm is opening that valve up on occasion with the pump running to see if there is any air ... I do it with mine sometimes.

    I can not imagine how it would be clogged up enough to need to buy a new part.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Gotcha, will give it a fresh look tonight and see if everything is clear in the housing leading to the gauage.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Mod Squad jblizzle's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    If you can, try blowing some compressed air from the outside and see if it clears anything.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Isaac-1's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    For future reference, typical pool gauges can be bought for $10 or less.

    Ike
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Crazy... took off the housing, made sure all ports were clear, removed and reattched the pressure gauge. Turned on pump, let air escape and validated water was coming out of the vent outlet port of the housing. Still showing zero pressure after running the pump for 5-10 minutes...
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Mod Squad jblizzle's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Try running without the gauge installed to see water comes out the gauge port.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Yep, air then water both coming out of the gauge port... hard to believe the original gauge was defective and so is the replacement... But only thing left is to get a new gauge. Where do I find these $10 versions?
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Isaac-1's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Ebay, Amazon, etc. just search on pool pressure gauge, they are either back or bottom stub type with 1/4 inch male NPT connector either 30 or 60 PSI, generally 30 PSI is fine.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Amazon is going to send me a replacement of that OEM Pentair. For $25 the next one better work. I was searching around for a cheap replacement (non-Pentair) and all I could find were cheap China made junk gauges that got plenty of bad reviews. Anyway, I suppose you just need it to get a reasonably accurate pressure reading so hopefully the replacement works.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Re: Newbie - No Pressure Gauge Reading?

    Was the water coming out the gauge port a spraying stream or a wetting drool? Do your pool returns have good forceful flow?
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Quote Originally Posted by gtemkin
    Was the water coming out the gauge port a spraying stream or a wetting drool? Do your pool returns have good forceful flow?
    It was a spraying stream, plenty of air pressure and power building up in the filter. Pool returns also showing a good flow.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Isaac-1's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    All the ones marketed to the pool market are basically junk, even the brand name gauges. It is possible to pick up a high quality gauge major gauge brand name on ebay at a reasonable price ($10-15 or so), but these you need to search for based on the specs (1/4 inch NPT stub, back or bottom, water / WAG operation, and sized correctly with a usable scale on the face).

    Here is a link to an example or two, or three,...

    Ashcroft brand stainless steel case, filled gauge 2.5 inch back stub gauge $15 + shipping
    http://www.ebay.com/itm/Ashcroft-63W300 ... 20d5a4ccbb

    New Weksler brand non filled back stub dual scale $6 with free shipping
    http://www.ebay.com/itm/New-Weksler-Ins ... 25861249ce

    Or if you could fit something bigger a 3.5 inch Marsh brand gauge for $10 shipped
    http://www.ebay.com/itm/MARSHALLTOWN-GA ... m1c6402f68

    And in case you need a bottom stub type, here is a Wikia for $12
    http://www.ebay.com/itm/WIKA-111-10B-2- ... 27c34e664b
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

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    bobodaclown's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Liquid filled tend to last the longest.

    Here's info I posted earlier: liquid-filled-pressure-gauge-inexpensive-8-19-9-12-13-t54701.html
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Newbie - No Pressure Gauge Reading?

    I'm a relative newbie myself, so take what I say with a grain of salt....

    For my system (see signature), I barely get a reading on my pressure gauge in normal operation, which is with the pump running at 1500 rpm. This is because my filter is somewhat oversized. When the system is priming at full-speed, I get a reading of around 15 psi. Perhaps it is normal for you to have a low reading on your gauge?
    16K gal IG 16'x28' pebble since 2011; Pentair Easytouch; Sta-Rite Intellipro VS pump; Sta-Rite 400 sq. ft. cartridge (System 3); 6 Heliocol Solar Panels; Aquamatic Cover; Legend pressure-side cleaner with Hayward booster pump; TF100 Test Kit.

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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Quote Originally Posted by jjslinger
    I'm a relative newbie myself, so take what I say with a grain of salt....

    For my system (see signature), I barely get a reading on my pressure gauge in normal operation, which is with the pump running at 1500 rpm. This is because my filter is somewhat oversized. When the system is priming at full-speed, I get a reading of around 15 psi. Perhaps it is normal for you to have a low reading on your gauge?
    I suppose possible...I'm busy getting my volume measurements down, so after I do that I'll get a post going with pool volume and equipment being used to see if that is up for consideration. I also have a new gauge on the way (went with a Wika liquid filled) so should know in the next couple of days after I install it if it does the trick.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Re: Newbie - No Pressure Gauge Reading?

    Quote Originally Posted by delirium330
    I suppose possible...I'm busy getting my volume measurements down, so after I do that I'll get a post going with pool volume and equipment being used to see if that is up for consideration. I also have a new gauge on the way (went with a Wika liquid filled) so should know in the next couple of days after I install it if it does the trick.
    I think your filter is similar to mine, except slightly larger. Mine is 400 square feet, yours is 450. If you look in the manual, there is a plot of pressure drop versus gallons per minute. At 60 gallons per minute, my filter has about 1 PSI drop across it; yours will be less since your filter is bigger. There is more to it than just the filter I think, it has to do with length of pipes, diameter of pipes, number of turns, elevation, etc. One of the more knowledgeable people here may be able to help you out with some estimates. But again, my system, which has a smaller filter than yours, barely moves the needle at all during normal operation with my pump at 1500 rpm.

    Don
    16K gal IG 16'x28' pebble since 2011; Pentair Easytouch; Sta-Rite Intellipro VS pump; Sta-Rite 400 sq. ft. cartridge (System 3); 6 Heliocol Solar Panels; Aquamatic Cover; Legend pressure-side cleaner with Hayward booster pump; TF100 Test Kit.

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    delirium330's Avatar
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    Re: Newbie - No Pressure Gauge Reading?

    Well turns out the new Pentair gauge I got was indeed defective. Crazy that I went through two of them and they both were broken. Anyway, with the new Wika liquid filled I'm getting about 6psi, I cleaned the cartridges about 4 weeks ago (not a major clean, just a quick clean when I moved into the house). Thanks again for everyone's help.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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