(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 8 of 8

Thread: VFD to CSV sprinkler question

  1. #1

    Default VFD to CSV sprinkler question

    I changed over to a CSV system after the electronic control in my VFD went out over the winter. The CSV is placed where the main line enters the house and I have great water pressure in the house a constant 50 psi or so. My issue is that my sprinklers are ran right out of the well and my pressure is about 30 psi at the most and I cannot run my sprinklers. How do I increase the pressure for my sprinklers? Thank you

  2. #2
    Test, Don't Guess! cacher_chick's Avatar
    Join Date
    Jan 2008
    Location
    Land of Cheese
    Posts
    3,134

    Default

    The bronze/brass CSV can go in the well. The plastic one probably can too depending on the weight that will be hanging off from it.

  3. #3
    Moderator valveman's Avatar
    Join Date
    Mar 2006
    Location
    Lubbock, Texas
    Posts
    4,154

    Default

    If the sprinklers are tied in before the CSV, it sounds like the pump is not doing as much as it should.

  4. #4
    DIYer, not in the trades LLigetfa's Avatar
    Join Date
    Feb 2011
    Location
    NW Ontario, Canada
    Posts
    3,675

    Default

    The CSV should be placed before the sprinklers.

    When he gets 50 PSI in the house but only 30 PSI at the sprinklers, my guess is the pump isn't running and the water is back-feeding from the pressure tank. While the pump is running, he should see more pressure. If in fact he only sees 30 PSI with the pump running and the sprinklers on, then almost certainly the pump is not keeping pace with demand and moving the CSV would not help.

  5. #5
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,605

    Default

    To produce ANY pressure above 30 psi, the pump would have to output MORE than that. If the sprinklers are draining the excess pressure above 30 psi, then they are using more water than the pump can produce, and he is at the point on the pump's curve where the volume and pressure are balanced with the demand.
    Licensed residential and commercial plumber

  6. #6

    Default

    Thanks for the relies. I'm a pretty good handyman but it sounds like I need to get the well guy out to take a look. No way I can put a csv in the well with my equipment.

  7. #7

    Default

    I replaced my high pressure sprinklers with low pressure sprinklers. I guess I can take a few off the line and see what happens. But the most on one line is 6 the rest are 5.
    Last edited by jpennin217; 05-19-2012 at 03:42 PM.

  8. #8
    Moderator valveman's Avatar
    Join Date
    Mar 2006
    Location
    Lubbock, Texas
    Posts
    4,154

    Default

    If you have different sprinklers now, we don’t know the change in flow. If they are tied in before the CSV, you will have low pressure (and only 1 GPM) to the sprinklers until the tank drains and the pump is started. But then you have water directly from the pump, and if the pressure is low, you have on too many sprinklers.

Similar Threads

  1. Replies: 1
    Last Post: 11-14-2011, 03:07 PM
  2. Sprinkler System Drain Question
    By bchstrad43 in forum Irrigation / Sprinkler Forum
    Replies: 1
    Last Post: 09-09-2009, 07:10 AM
  3. sprinkler
    By bat in forum Irrigation / Sprinkler Forum
    Replies: 0
    Last Post: 07-10-2009, 05:22 AM
  4. Sprinkler Head Question
    By maxmitchell in forum Irrigation / Sprinkler Forum
    Replies: 1
    Last Post: 03-08-2007, 06:30 PM
  5. Sprinkler conversion question?
    By jk60 in forum Irrigation / Sprinkler Forum
    Replies: 10
    Last Post: 06-03-2006, 09:15 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •