so my ro/di unit says that a minimum of 35psi is needed to force the water through the membrane. i've tried both bathroom faucets and the kitchen sink. the highest i get is 30psi. is this unit worthless to me unless i get a booster pump? what is normal psi through a faucet? is this 35psi minimum standard or do other brands/models have a lower psi minimum?
ro/di faucet pressure: PSI
- Thread starter chazertis
- Start date
I only get 35 psi from my faucet as well. i also need to turn on the hot water a slight bit. if i only use cold, it only goes to 25-30 psi. I spoke to my retailer and he said the unit still produces good water if under 35 psi.
I am thinking about getting a pump as well.
I am thinking about getting a pump as well.
- Location
- Wallingford, CT
Yes, you need a booster pump for the R/O to be efficient. At this rate, your probably wasting a ratio of 20:1 and just using a DI resin filter would be more efficient.
FWIW, my pressure to the R/O is about 70 psi (without any pumps)
FWIW, my pressure to the R/O is about 70 psi (without any pumps)
- Location
- Marine Park
Hot water is VERY high in TDS. Running hot water through your RO filter will clog it real fast. If you think booster pumps are expensive, price the cost of replacing an RO filter every two months.
Running your waste through the ro again is not as bad but I would just get a pump if I were in your shoes. As Chris Rock says: "You can drive with your feet if you want to but that don't make it a good idea"
Running your waste through the ro again is not as bad but I would just get a pump if I were in your shoes. As Chris Rock says: "You can drive with your feet if you want to but that don't make it a good idea"
iconoclast
Tired Member
- Location
- Brooklyn: near brooklyn college
some booster pumps arent so expensive, ive seen them on ebay for like 70$ or so
http://cgi.ebay.com/REVERSE-OSMOSIS...tcZphotoQQssPageNameZWDVWQQrdZ1QQcmdZViewItem
you can also use larger micron filters. I noticed a jump in water pressure when i changed up a little.
also when your water is very cold rodi efficiency goes down.
most people should probably be using a booster pump, i only get like 40psi.... which is still probably wasting a ton of water.
http://cgi.ebay.com/REVERSE-OSMOSIS...tcZphotoQQssPageNameZWDVWQQrdZ1QQcmdZViewItem
you can also use larger micron filters. I noticed a jump in water pressure when i changed up a little.
also when your water is very cold rodi efficiency goes down.
most people should probably be using a booster pump, i only get like 40psi.... which is still probably wasting a ton of water.
- Location
- NY
Ditto
My tap water comes out at 40 psi and I would get a minute trickle of RO/DI water. I added the booster pump (well spent money btw) and now I get ~ 80 psi and 100 gpd production (as it is rated).
Spring for the booster pump and do it right.
swimmer
- Location
- Greenpoint Brooklyn, NY
piping it directly to your main water line also helps, gained a few PSI doing mine that way. Can get all the parts from home depot. Also don't run it too hot or too cold if your running a faucet. Cold water loses ratio and hot water increases ratio but you use up your membrane.
- Location
- NY
Optimum temperature for running through your RO/DI is coincidentally about the same as we run our tanks, 77-78 degrees.
swimmer
swimmer
how do u do this? a t splitter and just plu the waste line back into the membrane?? then no wastewater?
How do the waste get carried away without waste water??
- Location
- NY
Pierce, I BELIEVE he continually recirculates his waste water through the membrane. This procedure would kill a membrane in no time. The recirculated waste water keeps climbing in TDS and the prefilter and membranes would be rendered useless in a heartbeat.............IMO.
swimmer
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