Drain on main shutoff valve?

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by Fraser Jim, Apr 6, 2013.

  1. Fraser Jim

    Fraser Jim New Member

    Messages:
    16
    Location:
    Fraser, CO
    I am moving the main shutoff valve and the guy at Home Depot says that I need to have a drain, per code, on the new one.

    Does this sound right?

    Using a ball valve. Is there any politically correct side or direction for the handle to be facing?

    I.e. facing the pipe, handle lines up on the right side of the pipe facing up when open.

    Thanks
  2. Cameron Fields

    Cameron Fields Implementer/Inventor

    Messages:
    98
    Location:
    Florida
    I am not 100% sure but I don't think it sounds right either but I could be wrong.:confused:
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,304
    Location:
    Cave Creek, Arizona
    If EITHER of his suggestions were true, then I have done THOUSANDS, probably tens of thousands, incorrectly. Use Home Depot aisle guy's advice when you want to know the correct nail, NOT when you have a plumbing question.
  4. ckl111

    ckl111 Home Builder

    Messages:
    65
    Location:
    Ontario
    I really depends on your municipality. A stop and waste valve is required around here and the inspectors look for it. It hardly adds anything to the cost of the valve. I never seen the use for the waste port on the main line though. For a hose bibb sure but it would take hours to drain the house lines through the port on the main shut off.

    A stop and waste valve will have an arrow showing the direction of the flow of water. Don't install it backwards or the waste port will be useless. Also try to install with the drain port facing down or at least sideways so the most amount of water will drain from it.
    Last edited: Apr 6, 2013
  5. LLigetfa

    LLigetfa DIYer, not in the trades

    Messages:
    3,841
    Location:
    NW Ontario, Canada
    Most folk would open every faucet in the house as well as outside so would not "drain the house lines through the port on the main shut off".

    My entire plumbing is pitched to drain and I have strategically placed drains so that I could drain the entire system. Whether it is code or common sense is for you to decide.
  6. ckl111

    ckl111 Home Builder

    Messages:
    65
    Location:
    Ontario
    My point was that the drain port at the main valve has little value. To drain the system, you would open up the closest faucet to the shut off and not bother with the drain port.
  7. Terry

    Terry Administrator Staff Member

    Messages:
    14,805
    Location:
    Bothell, Washington
    Normally a main water shutoff does not have a drain. I've never seen a plumbing code that required one.

    A ball valve can be placed in any position. Unlike some types, it's just a straight pass through of the water.
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