I'm selling my modified all stainless hopstopper. It has an o-ring gland machined into it so it fits into Blichmann kettles nicely without leaking. It works well for hop loads below 2 ounces but gets challenged by heavier loads if you try to recirc cool with a plate chiller at full open throttle on your ball valve. Works better if you slow it down with heavier loads. I'm using a hopsack holder now so I no longer use it but it is a good intermediate solution if you don't want to whirlpool/use his current doohickey. 50 shipped priority.