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Toilet ballcock connection size

ChrisJ
ChrisJ Member Posts: 16,317
edited December 2018 in Plumbing
Hi all.

Is the supply connection to toilet ballcocks and fill valves a standard size? Are there or were there different sizes over the years?

I have a 1960s American Standard and I need to make up a test hose so I can supply it with water outside to work on it.

I'm just going to leave it at that. :P.

Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,215
    It's a strange size: 7/8" IPS
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
    ChrisJ
  • JUGHNE
    JUGHNE Member Posts: 11,279
    WC riser flex tube would give you a transition from 3/8" compression to WC connection.
    ChrisJ
  • ChrisJ
    ChrisJ Member Posts: 16,317
    edited December 2018
    I'm assuming they're all the same size then?

    Even a 1940s setup? Commercial (non-Sloan) and Residential?

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • EzzyT
    EzzyT Member Posts: 1,344
    All American made toilets ballcock connection size has been 7/8” for over 100+ years.
    E-Travis Mechanical LLC
    Etravismechanical@gmail.com
    201-887-8856
    ChrisJ

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