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| Swimming pool experts? Pool boy needs assistance. (Page 1/2) |
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Raydar
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APR 04, 07:24 PM
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Sorry. Not what you think. 
I'm setting up pumps and sand filters for a large above-ground dock diving pool. (It's a dog sport. Google it, if you're interested.)
All the hardware was bought secondhand. We are using Hayward Vari-Flo XL valves. (They have various functions aside from filtering. You can switch them to backwash, recirculate without filtering, waste (used to drain the pool quickly), etc.
My question is... is it normal for a bit of water to escape through the "waste" port, when the filter is in normal operation? Or is something worn or dried out in the valve.
The valves are not stupidly expensive, but I don't want to replace them if new ones are going to act the same.
Also... Both the drain port and the return port of the filters/pumps/valves are below the surface of the water. Is this going to cause a problem? (The drain port on the pool is just above ground level, plumbed straight to the pump. The return port on the pool is about a foot below the surface of the pool water, and about five inches above the return port on the filter/valve. So the pump is pumping "uphill" both ways. On the face of it, I didn't see a problem, but after consideration I realized that it might be.)
Any suggestions will be greatly appreciated.[This message has been edited by Raydar (edited 04-04-2021).]
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MidEngineManiac
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APR 04, 07:47 PM
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I'd never heard of that sport before now, but it seems to me you will get furthest along that ruler using a small dog and a big slingshot.
(I'd guess the valve seat/ seal is worn or has some crud stuck in there stopping it from fully closing)
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maryjane
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APR 04, 08:39 PM
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| quote | Originally posted by Raydar:
Sorry. Not what you think.
I'm setting up pumps and sand filters for a large above-ground dock diving pool. (It's a dog sport. Google it, if you're interested.)
All the hardware was bought secondhand. We are using Hayward Vari-Flo XL valves. (They have various functions aside from filtering. You can switch them to backwash, recirculate without filtering, waste (used to drain the pool quickly), etc.
My question is... is it normal for a bit of water to escape through the "waste" port, when the filter is in normal operation? Or is something worn or dried out in the valve.
The valves are not stupidly expensive, but I don't want to replace them if new ones are going to act the same.
Also... Both the drain port and the return port of the filters/pumps/valves are below the surface of the water. Is this going to cause a problem? (The drain port on the pool is just above ground level, plumbed straight to the pump. The return port on the pool is about a foot below the surface of the pool water, and about five inches above the return port on the filter/valve. So the pump is pumping "uphill" both ways. On the face of it, I didn't see a problem, but after consideration I realized that it might be.)
Any suggestions will be greatly appreciated.
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No. not normal.
Diverter or Spider gasket or is 'probably' bad. Could also be a weak or corroded diverter spring.
I don't know anything about where the valve should be placed in relation to top of water level.
There is a website, which I think is named 'in yo pool' (all one word) that has a big write up on the variflo valves.[This message has been edited by maryjane (edited 04-04-2021).]
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Raydar
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APR 04, 09:25 PM
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| quote | Originally posted by maryjane:
No. not normal.
Diverter or Spider gasket or is 'probably' bad. Could also be a weak or corroded diverter spring.
I don't know anything about where the valve should be placed in relation to top of water level.
There is a website, which I think is named 'in yo pool' (all one word) that has a big write up on the variflo valves.
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Thank you very much. I'll check it out.
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maryjane
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APR 04, 09:34 PM
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I use a similar 7 position multi-directional valve on my high volume pasture spray unit. You must not switch valve positions while the pump is running. It allows the pressure to get between the gasket and it's mating face and lift the gasket, causing it to tear when you turn to the next position.
here it is:
http://www.inyopools.com/Ho...e.aspx?CommentPage=1[This message has been edited by maryjane (edited 04-04-2021).]
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cliffw
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APR 04, 10:03 PM
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| quote | Originally posted by maryjane:
You must not switch valve positions while the pump is running. It allows the pressure to get between the gasket and it's mating face and lift the gasket, causing it to tear when you turn to the next position.
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Ok. I know nothing about what you are talking about, ... but ... I know a lot about valves, pumps and running pressure loaded pumps.
It's possible to switch valve positions while a pump is running and a line is pressurized. You gradually open one while another is being gradually closed.. Equalizing the pressure.
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cliffw
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APR 04, 10:12 PM
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| quote | Originally posted by cliffw:
Ok. I know nothing about what you are talking about, ... |
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Ah, ... you only have one valve.
Perhaps you can upgrade to a two vale system ?
I still have no idea of what I am talking about.
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williegoat
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APR 04, 10:15 PM
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| quote | Originally posted by cliffw:
Ok. I know nothing about what you are talking about, ... but ... I know a lot about valves, pumps and running pressure loaded pumps.
It's possible to switch valve positions while a pump is running and a line is pressurized. You gradually open one while another is being gradually closed.. Equalizing the pressure. |
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Not on the kind of valve maryjane is talking about. Look at the picture in his link.
When you push down on the handle to turn the valve, everything is open at once and there is not much to hold the gasket in place.
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williegoat
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APR 04, 10:18 PM
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| quote | Originally posted by cliffw:
Ah, ... you only have one valve.
Perhaps you can upgrade to a two vale system ?
I still have no idea of what I am talking about. |
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I used to have one of those "rotary" type valves, but when I replaced my filter (years ago) my new one had something more like a spool valve. It just goes up and down.
Still, we are just talking about mostly rubber and plastic.[This message has been edited by williegoat (edited 04-04-2021).]
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maryjane
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APR 04, 10:50 PM
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| quote | Originally posted by cliffw:
Ok. I know nothing about what you are talking about, ... but ... I know a lot about valves, pumps and running pressure loaded pumps.
It's possible to switch valve positions while a pump is running and a line is pressurized. You gradually open one while another is being gradually closed.. Equalizing the pressure. |
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Generally, in these applications where a multi function/multi position valve is used, there is no other valve. None needed or desirable.
I've been using the same multi position valve for about 10 years now. Trouble free as long as they are flushed out occasionally and ya don't let them freeze.
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