Jan 31, 2019 - 11:02 AM
Thank you for contacting Biobidet Support.
The 3/8" Tvalve is 3/8 X 3/8 X 3/8". Depending on the age of the bidet the version of the threading is what may not fit as there are 3 versions.
Please contact us at firstname.lastname@example.org for further assistance.
Source: Non-Electric 3/8" T-Valve