Many tanks that appear to have fine 2" threads use this adapter!!!!
275 330 GALLON IBC TOTE TANK DRAIN ADAPTER (FOOD GRADE)
2" Cam Lock x Garden Hose Adapter
This COMMERCIALLY MADE FOOD GRADE IBC ToteTank Adapter Will Convert The 2" Male Camlock Fitting (that is Present On Many IBC Tote Containers) to a GARDEN HOSE Fitting!! (no other fitting is required)
This adapter is the best for Drinking Water and other food products. ALSO will hold up to harsh chemicals and acidic water better than brass will.
Has a large Rubber Gasket Seal to prevent leaking.
NOTE: This Adapter does not thread on to the threaded part of the valve.....The two STAINLESS STEEL "levers" on the fitting are pulled to lock the unit into the GROOVE behind the threads on the valve, thus sealing a thick gasket against the face of the valve.