powering sprinklers from hose

Discussion in 'Irrigation / Sprinkler Forum' started by tomshorse, Jul 14, 2005.

  1. tomshorse

    tomshorse New Member

    Messages:
    3
    is there a problem with going from a hose to pvc to sprinklers (hunter pro series 4" pop-up)? one (underground, all pvc) zone can power 7 heads like this but will going from a hose fitting to pvc deminish the psi or gpm normally?
  2. captwally

    captwally New Member

    Messages:
    102
    Location:
    Florida
    Absolutely! I don't have any of my pressure loss charts handy right now, but you will find that the psi loss per foot on standard garden hose is pretty scary compared to PVC pipe. Your best bet is to run PVC directly to the zone. It's inexpensive and worth it.
  3. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    First, the hose bibb may only be on a 1/2" pipe, so it does not have the same flow capability as a 3/4" line right off the main.

    Second, the loss in the hose will be significant.

    Third, where is the backflow prevention in this picture?
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,258
    Location:
    Cave Creek, Arizona
    hose

    The length of the hose, it probably being coiled up, and its inside diameter, will all combine to reduce the pressure and volume. You might not be able to operate more than a coupld of heads on any one zone doing it this way. In addition, if you are using a hose, it will probably, (and hopefully), be connected to a faucet with an external vacuum breaker, which will further diminish the possible volume.
Similar Threads: powering sprinklers
Forum Title Date
Irrigation / Sprinkler Forum Leaking sprinklers when system is off Feb 19, 2014
Irrigation / Sprinkler Forum pump start relay bad? (hunter sprinklers) Oct 4, 2011
Irrigation / Sprinkler Forum No pressure on pop-up lawn sprinklers after replacing them Sep 20, 2011
Irrigation / Sprinkler Forum sprinklers won't turn on Jun 16, 2011
Irrigation / Sprinkler Forum Who do I call to winterize my sprinklers? Oct 18, 2009

Share This Page