rodi pressure

mullinsd2 · 08/04/2009, 07:24 PM

Okay, so I purchased a 75 gpd rodi unit from brs, and I think I do not have enough pressure to run it; it needs psi. Does the average waterhose put out this much pressure? Anyone have any clever ways of overcoming this if need be?

Toddrtrex · 08/04/2009, 07:45 PM

What is your pressure right now? Mine is at 62, and working great. If yours is really low, can purchase a booster pump.

redfishsc · 08/04/2009, 07:52 PM

You need around 40-50psi, which most homes with city water can handle. My water hose outside the apartment puts out the same pressure as what's in my house.

Does your unit have a pressure gauge?

TDS meter? What is the TDS coming out of the RO unit (ignore the first pint or half-liter of water, it will almost always be high TDS)?

iLLwiLL · 08/04/2009, 07:58 PM

did you get the "plus" model with the pressure gauge and dual TDS meters?

~Will.

mullinsd2 · 08/04/2009, 08:04 PM

no I did not get the plus model, it ran me 175 alone for the unit, and I got a free valve for an auto top off. We are one well water, and I am getting close to a steady stream coming out the blue line (clean water). The black line (waste water) is flowing pretty strong. Our hose is really long, so I am thinking it is taking away from the pressure. The faucet fitting piece does not fit on any of our faucets for some reason...

sedor · 08/04/2009, 08:12 PM

You probably have good pressure. RODI units do not just pour water out. Mine is a 100 gpd unit and it takes about 4 hours to fill a 5G bucket. Most of the water coming out of it will be waste water that should be going down the drain or into your garden etc.

mullinsd2 · 08/04/2009, 08:19 PM

okay

iLLwiLL · 08/04/2009, 08:24 PM

I get around 2.5 - 3 gallons / hour out of my BRS 75gpd plus RO/Di when its at 55-60psi. My input line runs about 30 feet through 1/4" tubing from an exterior hose faucet and still maintains pressure just fine, I doubt your loosing much the way yours is setup.

~Will.

sedor · 08/04/2009, 08:31 PM

Quote:

Originally posted by iLLwiLL
I get around 2.5 - 3 gallons / hour out of my BRS 75gpd plus RO/Di when its at 55-60psi. My input line runs about 30 feet through 1/4" tubing from an exterior hose faucet and still maintains pressure just fine, I doubt your loosing much the way yours is setup.

~Will.

I must have crappy water pressure...
Mine does have 2 DI canisters on it, maybe that's slowing it down.

I wish I was getting 3G per hour!

Toddrtrex · 08/04/2009, 08:49 PM

I have a different unit, but a 75 GPD one. With 62 PSI and a temp around 66 I can fill up a 5 gal container in 2 hours.

CNoonan · 08/04/2009, 09:02 PM

I have well water and I need a booster pump for my RO/DI..

KillerReef · 08/04/2009, 09:03 PM

booster pump, best RO/DI investment I made, doubled my psi from 40 to 80 and tripled my "good" water output from about 1/2-1 gph to over 3gph...

Dooly · 08/04/2009, 09:07 PM

Is it difficult to install a booster pump?

mullinsd2 · 08/04/2009, 09:23 PM

where to buy booster pump?

Flipper62 · 08/04/2009, 10:12 PM

Before you add a booster pump, check the main shutoff valve that comes into your home. It may not be fully open.

I had a new home built one time & the water pressure for the faucets & shower seemed ok but the pressure to the RO/DI unit really sucked. It was at 50 psi.

I checked the Main Valve comming into the house & it was not fully open. Once I cranked it open the RO/DI inlet PSI jumped up to 68.

HighlandReef · 08/04/2009, 10:16 PM

mines ~65

KillerReef · 08/04/2009, 10:53 PM

Try here:
Marine Depot Booster Pump

They're very easy to install. A simple snip of the intake tubing and plugging into each side of the pump and you're in.

But I do agree with Flipper, if you can get you PSI up to 68 or around there without the pump, you're better off. The most I could get was 40 or so from mine so I needed the pump.

Flipper62 · 08/04/2009, 10:57 PM

You really need to get a PSI guage inline to see what the PSI is going into the RO/DI unit.

Goodwood · 08/05/2009, 12:51 AM

I have 85 PSI and make 5 GPH with BRS 75 GPD membrane.

Booster pump, PSI gauge, and inline TDS meters are well worth the money.

08/04/2009, 07:24 PM	#1
mullinsd2 Registered Member Join Date: Jul 2009 Posts: 753	rodi pressure Okay, so I purchased a 75 gpd rodi unit from brs, and I think I do not have enough pressure to run it; it needs psi. Does the average waterhose put out this much pressure? Anyone have any clever ways of overcoming this if need be?

08/04/2009, 07:45 PM	#2
Toddrtrex Registered Member Join Date: Feb 2004 Location: Carol Stream, IL Posts: 23,162	What is your pressure right now? Mine is at 62, and working great. If yours is really low, can purchase a booster pump. __________________ Click my name and then "visit toddrtrex's homepage" for tank pictures Current Tank Info: 210g reef and 65g reef

08/04/2009, 07:52 PM	#3
redfishsc Registered Member Join Date: Sep 2008 Location: Wake Forest, NC Posts: 3,696	You need around 40-50psi, which most homes with city water can handle. My water hose outside the apartment puts out the same pressure as what's in my house. Does your unit have a pressure gauge? TDS meter? What is the TDS coming out of the RO unit (ignore the first pint or half-liter of water, it will almost always be high TDS)? __________________ "The measure of a life is not its duration but its donation." Corrie Ten Boom “The tyrant dies and his rule is over, the martyr dies and his rule begins” -- Søren Kierkegaard Current Tank Info: ghetto grad school reef.....11g rimless tank, 36X9X9, lit by Cree and Rebels scobbled together. Stocked mostly with free stuff I got from panhandling my fellow reefers.

08/04/2009, 07:58 PM	#4
iLLwiLL Codename: Dutchess Join Date: Dec 2003 Location: the danger zone Posts: 933	did you get the "plus" model with the pressure gauge and dual TDS meters? ~Will. __________________ Shallow 80 sps grow out and a Tech 70 softie / macro / gorg seahorse play pen.

08/04/2009, 08:12 PM	#6
sedor Registered Member Join Date: Sep 2007 Location: Charlotte, NC Posts: 4,689	You probably have good pressure. RODI units do not just pour water out. Mine is a 100 gpd unit and it takes about 4 hours to fill a 5G bucket. Most of the water coming out of it will be waste water that should be going down the drain or into your garden etc. __________________ Ryan

08/04/2009, 08:04 PM	#5
mullinsd2 Registered Member Join Date: Jul 2009 Posts: 753	no I did not get the plus model, it ran me 175 alone for the unit, and I got a free valve for an auto top off. We are one well water, and I am getting close to a steady stream coming out the blue line (clean water). The black line (waste water) is flowing pretty strong. Our hose is really long, so I am thinking it is taking away from the pressure. The faucet fitting piece does not fit on any of our faucets for some reason...

08/04/2009, 08:19 PM	#7
mullinsd2 Registered Member Join Date: Jul 2009 Posts: 753	okay

08/04/2009, 08:24 PM	#8
iLLwiLL Codename: Dutchess Join Date: Dec 2003 Location: the danger zone Posts: 933	I get around 2.5 - 3 gallons / hour out of my BRS 75gpd plus RO/Di when its at 55-60psi. My input line runs about 30 feet through 1/4" tubing from an exterior hose faucet and still maintains pressure just fine, I doubt your loosing much the way yours is setup. ~Will. __________________ Shallow 80 sps grow out and a Tech 70 softie / macro / gorg seahorse play pen.

08/04/2009, 08:49 PM	#10
Toddrtrex Registered Member Join Date: Feb 2004 Location: Carol Stream, IL Posts: 23,162	I have a different unit, but a 75 GPD one. With 62 PSI and a temp around 66 I can fill up a 5 gal container in 2 hours. __________________ Click my name and then "visit toddrtrex's homepage" for tank pictures Current Tank Info: 210g reef and 65g reef

08/04/2009, 09:02 PM	#11
CNoonan Registered Member Join Date: Nov 2004 Location: New Jersey Posts: 164	I have well water and I need a booster pump for my RO/DI..

08/04/2009, 09:03 PM	#12
KillerReef Wrasse-a-holic Join Date: Dec 2001 Location: So Cal Posts: 2,083	booster pump, best RO/DI investment I made, doubled my psi from 40 to 80 and tripled my "good" water output from about 1/2-1 gph to over 3gph... __________________ 80 gallon Jebo 48x18x21 Bubble Magus BM-180 Cone 110lbs Live Rock 1-2" Sandbed Mag 12 Return Pump 2 MP10s, One Left Rear, One Right front Opposite each Other 2x65w pc 03 Actinic 2 250W Lumatek w/ SE Phoenix MH about 4" above water Livestock: 10 yr. old Purple Tang, Orchid Dottyback, Melanurus Wrasse, Pink Margin Wrasse, Pair of Clowns, Bartlett Anthias, Diamond Goby, 18 yr. old Lemon Peel Angel, Blue Flasher Wrasse Mixed Reef, mostly Zoanthids

08/04/2009, 09:07 PM	#13
Dooly Registered Member Join Date: May 2008 Location: Southern California Posts: 2,108	Is it difficult to install a booster pump?

08/04/2009, 09:23 PM	#14
mullinsd2 Registered Member Join Date: Jul 2009 Posts: 753	where to buy booster pump?

08/04/2009, 10:12 PM	#15
Flipper62 Premium Member Join Date: Apr 2008 Location: Naperville, Il. Business Owner, President & CEO Posts: 3,045	Before you add a booster pump, check the main shutoff valve that comes into your home. It may not be fully open. I had a new home built one time & the water pressure for the faucets & shower seemed ok but the pressure to the RO/DI unit really sucked. It was at 50 psi. I checked the Main Valve comming into the house & it was not fully open. Once I cranked it open the RO/DI inlet PSI jumped up to 68. __________________ If todays automobile had followed the same development as the computer, A Rolls Royce would cost $100.00. It would get a million miles per gallon, but it would explode once a year killing everyone inside." Current Tanks... 90 gal Reef... My awesome Office BioCube....( 180 was on hold ..no time ) ... The 180 gal has been sold...Yay..yay..yay. Hobby Experience: 19 years Reef...22 years FW

08/04/2009, 10:16 PM	#16
HighlandReef Chalice Monger Join Date: Jul 2006 Location: NW Indiana Posts: 1,163	mines ~65

08/04/2009, 10:53 PM	#17
KillerReef Wrasse-a-holic Join Date: Dec 2001 Location: So Cal Posts: 2,083	Try here: Marine Depot Booster Pump They're very easy to install. A simple snip of the intake tubing and plugging into each side of the pump and you're in. But I do agree with Flipper, if you can get you PSI up to 68 or around there without the pump, you're better off. The most I could get was 40 or so from mine so I needed the pump. __________________ 80 gallon Jebo 48x18x21 Bubble Magus BM-180 Cone 110lbs Live Rock 1-2" Sandbed Mag 12 Return Pump 2 MP10s, One Left Rear, One Right front Opposite each Other 2x65w pc 03 Actinic 2 250W Lumatek w/ SE Phoenix MH about 4" above water Livestock: 10 yr. old Purple Tang, Orchid Dottyback, Melanurus Wrasse, Pink Margin Wrasse, Pair of Clowns, Bartlett Anthias, Diamond Goby, 18 yr. old Lemon Peel Angel, Blue Flasher Wrasse Mixed Reef, mostly Zoanthids

08/04/2009, 10:57 PM	#18
Flipper62 Premium Member Join Date: Apr 2008 Location: Naperville, Il. Business Owner, President & CEO Posts: 3,045	You really need to get a PSI guage inline to see what the PSI is going into the RO/DI unit. __________________ If todays automobile had followed the same development as the computer, A Rolls Royce would cost $100.00. It would get a million miles per gallon, but it would explode once a year killing everyone inside." Current Tanks... 90 gal Reef... My awesome Office BioCube....( 180 was on hold ..no time ) ... The 180 gal has been sold...Yay..yay..yay. Hobby Experience: 19 years Reef...22 years FW

08/05/2009, 12:51 AM	#19
Goodwood Registered Member Join Date: Jan 2006 Location: Destin, Florida Posts: 700	I have 85 PSI and make 5 GPH with BRS 75 GPD membrane. Booster pump, PSI gauge, and inline TDS meters are well worth the money.