This ball valve is sold as a complete assembly so all you have to do is drill your 20mm hole in your keg, pot or vessel wall and you can fit this ball valve.
This is a full port ball valve with a 14mm bore which allows maximum flow rate through the ball valve.
The valve comes with Teflon tape already on the nipple, a silicon o-ring which is seated in the ½” BSP nut. The seat in the nut prevents the o-ring from rolling out of place when tightening.
The 1/2” BSP Male x 13mm Barb ( shown in the pictures) can be fitted to the ball valve so you can attach any 11-14mm ID type hose.
On the inside of the vessel the ½” BSP nipple usually protrudes approximately 16mm meaning you can attach an elbow to the inside of the vessel so it draws from the bottom (shown in the pictures)
Note: does not include the elbow or 13mm barb