Apr 16, 2019 - 09:15 AM
I apologize for the wait on the answer to your question. I have reached out to the manufacturer for more precise dimensions. As soon as I receive information back, I will update you immediately.
Apr 18, 2019 - 08:01 AM
I apologize, the manufacturer refuses to release that information. They only mention that it is not sold separately and that they are the same length on both the 1/2" valve, 916004 and 3/4" valve part number 90028.