RO waste water storage system help

[DBarsotti]

I'm looking to start storing as much of my RO waste water as I can to use for my yard but I'm having trouble figuring out how to bypass a float valve in the waste reservoir..

I don't think I'll be able to store all the waste water I create so I'd like the waste water to bypass my float valve in the storage reservoir and whatever water I can't contain will continue on to the drain.. I just don't know if they make a bypass valve? Or somehow use an auto shut off valve? I don't know how to make it work. I can't just have an overflow on the reservoir because there's no drain outside.

Something like this.. Ideally

Help me out please

 

[GreatWhiteTang]

Use. A bulkhead and pvc. To make an overflow from collection bin to drain.. Works for. Me...

 

[DBarsotti]

A bulkhead and overflow won't work because I am running the RO line outside and there's no way to run it back into the house in a larger pipe to the drain inside

 

[AZDesertRat]

You cannot install a float valve or any type of restriction on the waste line. This would ruin the RO membrane since it would prevent it from being flushed when in operation.
Run the waste line to the storage vessel so it has an air gap between the line and the stored water so there is no possibility of a back siphon. This is a plumbing code requirement and for your safety. Right at the level where you consider the storage full, drill and install either a john guest type bulkhead/tube connector or a uniseal and run your oveflow tube from there outside so it drains by gravity. No mechanical parts or floats to fail and the level will maintain itself.

 

[DBarsotti]

You cannot install a float valve or any type of restriction on the waste line. This would ruin the RO membrane since it would prevent it from being flushed when in operation.
Run the waste line to the storage vessel so it has an air gap between the line and the stored water so there is no possibility of a back siphon. This is a plumbing code requirement and for your safety. Right at the level where you consider the storage full, drill and install either a john guest type bulkhead/tube connector or a uniseal and run your oveflow tube from there outside so it drains by gravity. No mechanical parts or floats to fail and the level will maintain itself.

As I stated in the previous two posts I am trying to avoid an overflow. I am not going to restrict the waistline I just want it to be redirected as soon as the reservoir is full. I am completely aware of how an RO system works and that restricting the waistline would cause a problem... that's why I am asking the question here to see if anyone has a solution other than the typical overflow drain line. ...Codes smh

I was thinking about perhaps a float valve with a T right before it looped up and back down to go to a drain so the water would take the path of least resistance through the float valve as long as it could until the float valve closes then it would simply redirect itself up the T and back towards the drain all in 1/4" tubing

 

[AZDesertRat]

Anything you add on the waste will change the waste ratio, including changes in elevation and length of the lines. Make sure you check and adjust the waste ratio once you have done whatever it is you come up with. I think youre complicating things by not keeping it simple and using gravity.

 

[DBarsotti]

I would love to use gravity but there is just really no way of getting a larger gravity fed drain back into the house without cutting a hole in my exterior wall and I really am trying to avoid cutting plaster at all costs