Sep 21, 2018 - 07:59 AM
Thank you for contacting Biobidet Support!
The Elite 3 inlet is 7/8", the outlet is 7/8" and the T-Valve is 3/8" conpression.
The supply hose will be 3/8" on the protruding valve and the top and bottom parts of valve are 7/8".
The Elite 3 threading is NOT standard, it is unique and propietary to this bidet. You cannot find any fittings threading wise at any hardware supply store.
Please feel free to contact us if you have any further questions at email@example.com
Source: Elite # Fittings and Threadings