3-in. butterfly valve
[2] 3-in. gaskets
[2] 3-in. clamps
3-in. sightglass or 3-in. tri-clamp pipe
3-in. tri-clamp cap with pressure relief valve (PRV)
Purge hops with CO2 for no oxygen dry hopping
Dry hop under pressure
Tips:
3" sight glass is 165mm overall high, glass column is 80mm inner diameter and 100mm high.
Warning : please pulling the PRV first before you remove the tri clamp parts, and make sure there is no pressure in the tank.