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Thread: Rainbird sprinkler valve to be used for flush valve?

  1. #1
    DIY Junior Member statin's Avatar
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    Question Rainbird sprinkler valve to be used for flush valve?

    I am in the process of setting up a iron filter and watersoftener in a new home. I was considering using a rainbow automatic controller with two valves to open and close one valve for flushing a sand/particulate filter and the the second valve to flush the contact/settleing tank. Does anyone see any problem doing this? I have used these valves in several homes for several years with no problems and thought it may be a good idea for some automation. Thanks for any replies.

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    That's all folks! Gary Slusser's Avatar
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    I can't see it clearly yet, can you describe it a bit more?
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    In the Trades Tom Sawyer's Avatar
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    Quote Originally Posted by statin View Post
    I am in the process of setting up a iron filter and watersoftener in a new home. I was considering using a rainbow automatic controller with two valves to open and close one valve for flushing a sand/particulate filter and the the second valve to flush the contact/settleing tank. Does anyone see any problem doing this? I have used these valves in several homes for several years with no problems and thought it may be a good idea for some automation. Thanks for any replies.
    So if I'm reading you right you are planning to pipe into the rainbow and then use two "zones" one to control to the sand filter and the other to flush the contact tank and all done by setting the timer? Novel idea. I can see no reason why not.
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

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    Aspiring Old Fart, EE, computer & networking geek Mikey's Avatar
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    That will work OK provided the downstream side is at low or zero pressure when the valve is "OFF". Backflow can occur if not. Sprinkler valves aren't really "valves" in the sense of controlling flow in both directions.

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    Jack of all trades DonL's Avatar
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    It should be able to work, for how long is another question.

    That type of valve is not made to be on (Have power applied) all of the time with out water going thru it to cool the valve.

    If I understand the setup, then a valve will have to be doing just that.


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    That's all folks! Gary Slusser's Avatar
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    Quote Originally Posted by Tom Sawyer View Post
    So if I'm reading you right you are planning to pipe into the rainbow and then use two "zones" one to control to the sand filter and the other to flush the contact tank and all done by setting the timer? Novel idea. I can see no reason why not.
    If he's going to backwash a filter and drain another he may need more than 3 valves. IMO that depends on what type "contact" tank and sand filter he has.
    Gary Slusser Retired (= out of business)
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    CAUTION, as of Nov 12 2013 all YouTube videos showing how to rebuild a Clack valve have an error in them that can cause damage.

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    DIYer, not in the trades LLigetfa's Avatar
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    Quote Originally Posted by Gary Slusser View Post
    If he's going to backwash a filter and drain another he may need more than 3 valves. IMO that depends on what type "contact" tank and sand filter he has.
    There was no mention of "backwashing". A simple mesh filter can be flushed by opening a drain valve so long as the direction of flow goes the right way and doesn't crush the filter element. I assume the contact tank would just open the drain port.

    There might be grit in there that could wear on the valve and shorten the life of it.

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    In the Trades Tom Sawyer's Avatar
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    Quote Originally Posted by Gary Slusser View Post
    If he's going to backwash a filter and drain another he may need more than 3 valves. IMO that depends on what type "contact" tank and sand filter he has.
    Yep, we agree.
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

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    That's all folks! Gary Slusser's Avatar
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    Quote Originally Posted by LLigetfa View Post
    There was no mention of "backwashing". A simple mesh filter can be flushed by opening a drain valve so long as the direction of flow goes the right way and doesn't crush the filter element. I assume the contact tank would just open the drain port.

    There might be grit in there that could wear on the valve and shorten the life of it.
    Yeah me either, I can't see what type of sand filter he has or what type of retentention (contact) tank he has. So unlike others that are assuming what the has, I asked for a more detailed description rather than to tell him no problem.
    Gary Slusser Retired (= out of business)
    Click Here to learn how to correctly size or program a water softener.
    CAUTION, as of Nov 12 2013 all YouTube videos showing how to rebuild a Clack valve have an error in them that can cause damage.

  10. #10
    Jack of all trades DonL's Avatar
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    Sounds like a project for a Spouse Adapter.
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    In the Trades Tom Sawyer's Avatar
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    The word backwash wasn't used by anyone but Gary. I believe the op wants to flush the retention tank and the particulate filter which he may have confused to mean backwash so thought the exact details still need to be forthcoming, his question as to wether or not the rainbow controller could be used is still probably.
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

  12. #12
    DIYer, not in the trades LLigetfa's Avatar
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    Quote Originally Posted by Gary Slusser View Post
    Yeah me either, I can't see what type of sand filter he has or what type of retentention (contact) tank he has. So unlike others that are assuming what the has, I asked for a more detailed description rather than to tell him no problem.
    Agreed.

    I have a 100 mesh Banjo before the micronizer that if I open the draincock, can cause a reverse flow through the micronizer which is both bad for the micronizer and will collapse the SS mesh filter. I make sure the pump is running when I flush it to ensure a forward flow.

    About once a quarter, I manually flush it and my contact tank. I observe what comes out which gives me a chance to analyze the state of the system so I would not want to automate it. Brain-dead simple solutions create brain-dead users.

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    DIYer, not in the trades LLigetfa's Avatar
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    Quote Originally Posted by Tom Sawyer View Post
    ... his question as to wether or not the rainbow controller could be used is still probably.
    I have no personal experience with that controller but would have reservations using it in such a hostile environment. Sprinkler systems need to have filtered water as they cannot tolerate sand so the controller may not tolerate it either.

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    Jack of all trades DonL's Avatar
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    Not sure why you say the controller will not tolerate it. Why is that ?

    Sprinkler systems need to have filtered water for sure.

    So do the valves.

    Some people do not read installation instructions, to see that a screen should be used on the Valves.

    Some people remove the screens because they get tired of cleaning them, Then wonder why the valve is leaking and the heads are plugged.


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    DIY Junior Member statin's Avatar
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    Sorry I have jumped onto another project and have not got back on here in a while. This is the device I am trying to emulate.

    Name:  auto-flush.jpg
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    http://www.claritywaterproducts.com/...or-sand-traps/

    I have not purchased the sand filter yet but this is kinda what I was thinking of installing:

    Name:  product_PreFilterSystem_306x295.jpg
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Size:  27.0 KB

    The contact tank that I have is similar to this but a 40 gallon:

    Name:  ut-40-contact-tank.jpg
Views: 63
Size:  3.9 KB

    So the rainbow timer controlled valves would be used to flush a settling/contact tank for a iron filter and then to flush the sand trap filter. I have never seen sand or any debris in our water and don't feel i need the sand trap but since I am plumbing for all this new equipment I would include it now rather have to add it down the line. The down stream side will flow into a floor drain. My plans are to install the filtration equipment and then once I get an idea as to how often I need to flush this equipment I may install an automated system. But reading the post from LLigetfa:

    Agreed.

    I have a 100 mesh Banjo before the micronizer that if I open the draincock, can cause a reverse flow through the micronizer which is both bad for the micronizer and will collapse the SS mesh filter. I make sure the pump is running when I flush it to ensure a forward flow.

    About once a quarter, I manually flush it and my contact tank. I observe what comes out which gives me a chance to analyze the state of the system so I would not want to automate it. Brain-dead simple solutions create brain-dead users.


    It sounds like he has a similar set up with a prefilter and contact tank etc and doesn't have to flush them out often enough to worry about making it automated. The sand filter I believe I would not have to flush often but the contact tank I have not a clue about. I have 6ppm iron and do not know if this would settle out enough iron that would need flushing weekly or quarterly. I would like to know a little more about LLigetfa's set up. Are you filtering iron since you mentioned a contact tank and micronizer? If so what is you ppm iron and how often do you need to flush out all the settled iron? Thanks for all the discussion. I hope I have clarified my intentions.
    Last edited by statin; 09-29-2013 at 10:46 AM.

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