Another ro/di question

adnantz · 03/06/2007, 06:56 PM

Where i live we have very low water pressure. Will this affect a ro/di unit ? If so do some units work better than others ?

reefrottie · 03/06/2007, 07:00 PM

Are you on city or well water? You ma need to get a booster pump.

adnantz · 03/06/2007, 07:09 PM

We are on city water we just have low pressure. Do you know the minimum pressure needed?

reefrottie · 03/06/2007, 07:12 PM

I am on well water and I use a booster pump @ 60-80 psi with good results. before I had the booster It would take a week to fill a 30 gallon tank! After the booster 1 day.

reefrottie · 03/06/2007, 07:16 PM

look here. http://www.pwgazette.com/6800pump.htm

adnantz · 03/06/2007, 07:27 PM

Thanks reefrottie. I haven't bought a ro/di yet. But I may check on a booster pump also. I am guessing they will work on low pressure, but it takes a lot longer to make water.

reefrottie · 03/06/2007, 07:34 PM

That is correct. and you are welcome.

AZDesertRat · 03/06/2007, 08:01 PM

They will operate OK at a reduced pressure of about 40 psi. Keep in mind though temperature also affects output so if you have both low pressure and low temperature you may get low production. When you say low pressure what do you consider low? It might be worth picking up a pressure gauge and faucet adapter at HD or Lowes to see what you really have available.
Here is a link to Dow Filmtecs graphs that show the effects of temp and pressure on output. Most units use the 75 GPD RO membrane so I would follow that line.
http://www.dow.com/PublishedLiteratu...romPage=GetDoc

adnantz · 03/06/2007, 08:52 PM

Thanks AZDesertRat. I will get a pressure guage and adapter and check. My pressure just seems a lot lower than at my mom's house or at work, but I've never checked it.

03/06/2007, 06:56 PM	#1
adnantz Registered Member Join Date: Jan 2007 Location: Ky. Posts: 42	Another ro/di question Where i live we have very low water pressure. Will this affect a ro/di unit ? If so do some units work better than others ?

03/06/2007, 07:00 PM	#2
reefrottie Registered Member Join Date: Mar 2007 Location: Rock Hill South Carolina Posts: 45	Are you on city or well water? You ma need to get a booster pump.

03/06/2007, 07:09 PM	#3
adnantz Registered Member Join Date: Jan 2007 Location: Ky. Posts: 42	We are on city water we just have low pressure. Do you know the minimum pressure needed?

03/06/2007, 07:12 PM	#4
reefrottie Registered Member Join Date: Mar 2007 Location: Rock Hill South Carolina Posts: 45	I am on well water and I use a booster pump @ 60-80 psi with good results. before I had the booster It would take a week to fill a 30 gallon tank! After the booster 1 day.

03/06/2007, 07:16 PM	#5
reefrottie Registered Member Join Date: Mar 2007 Location: Rock Hill South Carolina Posts: 45	look here. http://www.pwgazette.com/6800pump.htm

03/06/2007, 07:27 PM	#6
adnantz Registered Member Join Date: Jan 2007 Location: Ky. Posts: 42	Thanks reefrottie. I haven't bought a ro/di yet. But I may check on a booster pump also. I am guessing they will work on low pressure, but it takes a lot longer to make water.

03/06/2007, 07:34 PM	#7
reefrottie Registered Member Join Date: Mar 2007 Location: Rock Hill South Carolina Posts: 45	That is correct. and you are welcome.

03/06/2007, 08:01 PM	#8
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	They will operate OK at a reduced pressure of about 40 psi. Keep in mind though temperature also affects output so if you have both low pressure and low temperature you may get low production. When you say low pressure what do you consider low? It might be worth picking up a pressure gauge and faucet adapter at HD or Lowes to see what you really have available. Here is a link to Dow Filmtecs graphs that show the effects of temp and pressure on output. Most units use the 75 GPD RO membrane so I would follow that line. http://www.dow.com/PublishedLiteratu...romPage=GetDoc

03/06/2007, 08:52 PM	#9
adnantz Registered Member Join Date: Jan 2007 Location: Ky. Posts: 42	Thanks AZDesertRat. I will get a pressure guage and adapter and check. My pressure just seems a lot lower than at my mom's house or at work, but I've never checked it.