Raised spa draining to pool

[Goodguy1974]

Hi I have a pool that is draining from the raised spa to the pool when equipment is off. The pool has no check valves.

I already replaced the suction side Pentair diverter valve. What else could it be?

There is a return valve and a vacuum/skimmer suction side diverter valve that I have not touched.

Thanks

 

[Jimrahbe]

G,

If you have a raised spa and no check valve that is exactly what it will do. Something to do with a new thing called gravity.

You might also have a Hartford loop, a big plumbing loop that does not look like it has any function, but it acts as a check valve in a way.

Show us some pics from five feet backwards. We need to understand how everything connects together.

Thanks,

Jim R.

 

[Goodguy1974]

G,

If you have a raised spa and no check valve that is exactly what it will do. Something to do with a new thing called gravity.

You might also have a Hartford loop, a big plumbing loop that does not look like it has any function, but it acts as a check valve in a way.

Show us some pics from five feet backwards. We need to understand how everything connects together.

Thanks,

Jim R.

Hi thanks for your response.

No Hartford loop and I have several pools with a raised spa with no check valves only diverter valves so it is not uncommon.

 

[Goodguy1974]

Hi thanks for your response.

No Hartford loop and I have several pools with a raised spa with no check valves only diverter valves so it is not uncommon.

And the spa does not drain to pool level without check valves

 

[Jimrahbe]

G,

I'm assuming the raised spa spills over into the pool when the system is in the Pool mode. If that is true, without a check valve, the spa will drain down to just below the spa returns/jets when the pump is turned off.

Unless someone manually shuts off the spa return line, or there is a check valve in the line. Or an anti-gravity device is being used.

Let's see what our other members have to say..

Thanks,

Jim R.

 

[Goodguy1974]

Thanks Jim

 

[jark87]

I can’t get into whether there’s a way to prevent draining without a check valve, as my raised spa has said valve. When it went bad, spa drained exactly as Jim described above. Replacing the check valve fixed my problem. Good luck!