Ss Conical Racking Arm

[altstart]

B)
Gooday people I am looking at getting a stainless conical made and I cant find a suitable fitting that allows the racking arm to be rotated without leaking. Any one know where I can find any info to solve this problem?. All info will be much appreciated.
Cheers Altstart
Oops I should have posted this in Gear and Equipment Mods could you move it for me Thanks Altstart

 

[paulwin]

hi mine is similar to wallys i had a 1 inch triclover welded onto the conical and it rotates via that with no leaks
then i use a mashmaster tri clover ball valve on the end