Flowvis Flow Meter

[whataboy]

Should the Flow-vis flow meter be installed on inlet or outlet side of my pump filter? I have no room on inlet side so hopefully it will function properly on the outlet side of filter. Thx

 

[duraleigh]

Yes, it will do fine on either side.

 

[mas985]

I think the outlet side of the filter is a better position so debris does not get in the way of the check valve closing and not sealing properly.

 

[whataboy]

Thanks for the input. Just installed a Pentair VS pump and will install Flow-vis flow meter soon to see how many gpm's I get at different rpm's which will determine run time to turn over my 15k gal. pool.

 

[whataboy]

Cool site, glad I found it

 

[mas985]

Thanks for the input. Just installed a Pentair VS pump and will install Flow-vis flow meter soon to see how many gpm's I get at different rpm's which will determine run time to turn over my 15k gal. pool.

The concept of turnover is a little outdated. Flow rate has little to do with required run time. Read the study in my signature and the pool school article here:


http://www.troublefreepool.com/content/152-determine-pump-run-time

 

[whataboy]

Does anyone know where I can purchase a Flow-vis Flow Meter in the Dallas,Texas area? Thanks..

 

[mas985]

You can get one from Dave: http://tftestkits.net/Flow-Meters-and-PSI-Gauges-c12/

But again, flow rate is not all that important to know.

 

[miles267]

Installed a Flow-vis check valve today after my heat pump. Had to remove and replace the 8 screws and apply silicone grease to the o-ring 3-4 times before I was able to get a good seal without any leaks at higher pump RPMs.

Approx how accurate is the Flow-vis reported GPM?


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[Jimrahbe]

Miles,

You might want to check out the meaning of OCD...

Jim R.

 

[miles267]

Miles,

You might want to check out the meaning of OCD...

Jim R.

LOL. All kidding aside, my PB installed a Jandy check valve after my heat pump. I replaced the valve with a Flowvis retrofit kit. However I couldn't seem to get a tight seal in on one particular side of the valve lid no matter how hard I tightened the screws. So I finally removed it again and liberally applied the silicone grease and tightened again, starting with the side that was leaking. This time it seemed to make a good seal. Yes, it was making me crazy! [emoji51]


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[mas985]

http://www.h2flow.net/flowvis-flow-meter/

Average accuracy:

97.9% between 10 - 90 GPM (1.5" model)
97.9% between 10 - 110 GPM (2" & 2.5" model)
98.15% between 90 - 220 GPM (3" model)
98.7% between 160 - 300 GPM (4" model)

 

[needsajet]

A good reason to have it on the return side is to let it double as a check valve, just before chlorine injection or an SWG. I can swap mine with the check valve on my solar heat and do calculations on heat output, but yep it's mostly a human interest kinda device. If you have a buddy with a Jandy check valve you can share it. I like having it with the VS pump. Friction loss is a cost, albeit minor, unless it's doubling as a needed check valve. If it isn't needed after you know the system, you can remove it and replace with a cover with no check valve in it.

I might get poked with a stick for OCD, but I tighten them in a star pattern, going around twice, like a truck wheel.

Glad you found TFP