Required fittings between distribution line and fixtures?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by CFO, Oct 31, 2012.

  1. CFO

    CFO New Member

    Oct 19, 2012
    Northern Virginia
    Hi! This is my first post to your forum.

    I am remodeling my masterbath and will be relocating all the fixtures. I plan to use Sharkbite PEX products (either crimping or clamping) as they seem pretty straight forward.

    I'm a little confused though on the specific fittings I am supposed to install between the distribution line and the actual fixtures (e.g., a sink). For example, on one sample illustration they installed a Regulator between the 3/4" distribution pipe and the 1/2" branch lines. What is that for? Is it necessary? :confused: I'm also unsure of the combination of fittings I need to go from the 1/2" PEX to something that I can actually attach to the faucet.

    My layout is very straightforward. The distribution line comes in from one side of the room and all 5 fixtures are in a straight line down the same wall. Can I just run one 3/4" PEX pipe all the way down the wall and just insert a 3/4 x 3/4 x 1/2 reducing T at each fixture to carry the water to the fixture? Can it be that simple?

    Any help you can give me would be much appreciated. :D
  2. kreemoweet

    kreemoweet In the Trades

    Sep 7, 2009
    Seattle. WA
    Plumbing fixtures require shutoff valves, preferably in the immediate vicinity of the fixture. As a matter of good design,
    the valves and their attachment to the distribution piping should be easily accessible and solidly mounted to, for instance,
    the wall framing members.
  3. Sponsor

    Sponsor Paid Advertisement

  4. Gary Swart

    Gary Swart In the Trades

    Sep 1, 2004
    Yakima WA
    As Kreemoweet says, you need shutoff valves. Typically a toilet has a shut off where the pipe come through the wall, and this is what the supply tubing to the toilet connects. The basin shutoffs are normally inside the vanity either on the vanity floor or on the wall. If the valves are exposed, they can be treated the same as the exposed toilet valve. The supply lines to the hot and cold connect to these valves. The tub/shower shutoffs are usually conceals in front of the tub/shower, depending on the installation. In all cases the most popular valves today are the 1/4 turn style. The come in just about any configuration you can think of. They can be soldered or compression, and can come off straight or at 90 degrees. Most, if not all, are chrome finished so will look good if exposed. Keep in mind that 3/4" Pex is actually the same inside diameter as 1/2" copper. In my opinion, your 3/4 Pex is OK because it is very unlikely all the fixtures will be used at the same time. I have a tub/shower, basin, and toilet all on one 1/2" line and zero problems. Not really sure what the official charts say.
Similar Threads: Required fittings
Forum Title Date
Plumbing Forum, Professional & DIY Advice Second vent stack required? Jul 20, 2017
Plumbing Forum, Professional & DIY Advice Moen T8360 Transfer Valve Facia - Is the 3360 Valve Required Or Can I Use The 3372 Valve? Nov 11, 2015
Plumbing Forum, Professional & DIY Advice Custom tiled shower pan, ABS plumbing required? Jul 21, 2015
Plumbing Forum, Professional & DIY Advice Cleanout Required in Vent Portion of DWV? Mar 17, 2014
Plumbing Forum, Professional & DIY Advice Cooktop vent reducer required from JennAir - does this make sense? Sep 7, 2012

Share This Page