Purpose of the waste valve on RO/Di

an411 · 04/15/2008, 07:57 AM

Should the RO/DI be drained after use is that why there is a waste or drain valve. I am using the Filterguy reef +1 unit.

hunkafish · 04/15/2008, 09:22 AM

All Ro/Di systems have a wast line depending on the system and how efficent it is and water conditions, it can take 3 gal of water to have one gal come out the Ro/Di side the remainig 2 gal has to go some where, thus the wast line usally tapped into a sink drain

an411 · 04/15/2008, 10:52 AM

well i meant i have a valve that has a waste line I am thinking its to drain the water in the membranes I know that the ro/di unit connects to a waste line but I was more or less talking about the valve that is on the ro/di itself. Maybe I will post this in the filter guy forum and see if they can answer this better

rbursek · 04/15/2008, 11:01 AM

It is more then likely a flush valve to back flush the membrane for about 30 seconds before and after use, but normally closed when making water and you want to keep the membrane wet, so do not drain it.

an411 · 04/15/2008, 11:42 AM

yeah that is what I was talking about. SO this is to flush before and after use. this should be done for about 30 seconds?

silverwolf72 · 04/15/2008, 01:38 PM

The valve is used normally when you change filter to remove all the dust and residue. There should be a pressure release built in to it that runs every time you make RO water.

04/15/2008, 07:57 AM	#1
an411 Registered Member Join Date: Feb 2007 Location: Derby CT Posts: 2,861	Purpose of the waste valve on RO/Di Should the RO/DI be drained after use is that why there is a waste or drain valve. I am using the Filterguy reef +1 unit.

04/15/2008, 09:22 AM	#2
hunkafish Registered Member Join Date: Dec 2007 Location: Pompano Beach FL Posts: 339	All Ro/Di systems have a wast line depending on the system and how efficent it is and water conditions, it can take 3 gal of water to have one gal come out the Ro/Di side the remainig 2 gal has to go some where, thus the wast line usally tapped into a sink drain

04/15/2008, 10:52 AM	#3
an411 Registered Member Join Date: Feb 2007 Location: Derby CT Posts: 2,861	well i meant i have a valve that has a waste line I am thinking its to drain the water in the membranes I know that the ro/di unit connects to a waste line but I was more or less talking about the valve that is on the ro/di itself. Maybe I will post this in the filter guy forum and see if they can answer this better

04/15/2008, 11:01 AM	#4
rbursek Moved On Join Date: Jun 2006 Location: germantown,wi Posts: 2,339	It is more then likely a flush valve to back flush the membrane for about 30 seconds before and after use, but normally closed when making water and you want to keep the membrane wet, so do not drain it.

04/15/2008, 11:42 AM	#5
an411 Registered Member Join Date: Feb 2007 Location: Derby CT Posts: 2,861	yeah that is what I was talking about. SO this is to flush before and after use. this should be done for about 30 seconds?

04/15/2008, 01:38 PM	#6
silverwolf72 Registered Member Join Date: Jul 2005 Location: Lake Forrest CA Posts: 1,732	The valve is used normally when you change filter to remove all the dust and residue. There should be a pressure release built in to it that runs every time you make RO water.