RO holding tank

[Arbe0]

I have had an RO system for years now and normally just fill up plastic bottles like the Primo water you get from Home Depot. But I would like to add a DIY water storage for my system. I would buy a tank, but I would like to store around 13 gallons of water and am too cheap to buy a 14-gallon tank and everything I would need to make it work. I already have almost everything for the project except for a pump to go inside the can. I was wondering what most you people use for a storage can that won't leave me with a plastic taste in my beer. I would also like it to be covered to keep dust out.

 

[Indian_villager]

I have just been using food grade buckets with float valves.
https://www.amazon.com/dp/B012DU0ZAO?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1

 

[Buckeye_Hydro]

You can get a 20 Gal Rubbermaid Brute Trash can (FDA approved for food contact) at Home Depot https://www.homedepot.com/p/Rubberm...ses-Commercial-Environments-2031186/100211748

If you need a float valve, we stock them and we are a Home Brew Talk Sponsor https://www.buckeyehydro.com/float-valves/

 

[SFC Rudy]

I use a keggle to store my RO water. Trash can is a good idea too.

 

[Bobby_M]

I have had an RO system for years now and normally just fill up plastic bottles like the Primo water you get from Home Depot. But I would like to add a DIY water storage for my system. I would buy a tank, but I would like to store around 13 gallons of water and am too cheap to buy a 14-gallon tank and everything I would need to make it work. I already have almost everything for the project except for a pump to go inside the can. I was wondering what most you people use for a storage can that won't leave me with a plastic taste in my beer. I would also like it to be covered to keep dust out.

What about your brew kettle?

 

[Buckeye_Hydro]

Some examples

 

[Deadalus]

I would stick to food grade to avoid plastic taste. Not perfect as sometimes there is still an initial plastic flavor. Used food grade barrels can be had. I have a 35 gallon barrel that was used in wine making that has a pretty good clamping system. I use it for chilling but doubt it would have any issues for brewing water. I have a smaller 15 gallon food grade barrel that I use for gardening.

 

[RyPA]

I have this 3.2 gallon tank under my sink. I empty the tank into a kettle and bring it to my garage to fill my Anvil Foundry. I then wait for it to refill and repeat. It usually takes 2-3 trips over the course of 2-3 hours. I only brew 5-6 gallon batches, using 8-8.5 gallons of RO water per batch.

https://www.amazon.com/dp/B00439MYYE?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_19

 

[Buckeye_Hydro]

You'd be better off refilling an UNpressurized 5 gallon bucket into which you mounted a float valve!

 

[Arbe0]

You can get a 20 Gal Rubbermaid Brute Trash can (FDA approved for food contact) at Home Depot https://www.homedepot.com/p/Rubberm...ses-Commercial-Environments-2031186/100211748

If you need a float valve, we stock them and we are a Home Brew Talk Sponsor https://www.buckeyehydro.com/float-valves/

I got that Rubbermaid Brut trash can and have it set up along with my RO system, from Buckey Hydro, mounted. Looking at spare parts I have I realized I already have bought a float valve kit from BuckeyHydro (Great support, thank you) years ago which has a float valve, check valve and an auto shut off valve. Do I need to install all of these for the RO Trash can Holding tank?

 

[day_trippr]

I would say "Yes". You definitely need the float valve, which makes an auto shut off valve almost mandatory, and the check valve works with the ASOV at the membrane output...

Cheers!

 

[Arbe0]

thank you, I will hook it all up soon.

 

[Buckeye_Hydro]

Yes - the float valve stops the flow of purified water ("permeate"). That causes the pressure in the tube feeding the float valve to start climbing. The Auto shut off valve senses this and cuts off all flow to the RO membrane - which stops the flow of waste water ("concentrate"). The auto shut off valve won't function without a check valve in place.

 

[Buckeye_Hydro]

I would buy a tank, but I would like to store around 13 gallons of water and am too cheap to buy a 14-gallon tank and everything I would need to make it work.

I forgot to mention this earlier - but a good rule of thumb is that pressurized water tanks only hold about 50% of their volume in water. The rest is taken up by an air bladder. So if you need 13 gals of water, you'd be looking at a 25 or 30 gallon storage tank.