1 5/16 ACME (OPD) x 1/4″ FNPT
Propane Acme Adapter
1 5/16 ACME (OPD) x 1/4″ FNPT – The ME393-1 from Marshall Excelsior is an adapter. One end of the propane adapter has ¼” FNPT (female pipe thread) and the other end of the fitting is a 1 5/16 ACME which is the same type of fitting you find on a BBQ cylinder or OPD valve. This propane fitting is a free flowing there is no check valve! Also has inner POL threads.