Marshall Excelsior Excess Flow MPOL x 1/4"FIF x 1"-20MNPT x 1-5/16"MACME Brass LP Adapter Fitting ME425P 06-0420

It measures male POL (prest-o-lite) with o-ring x 1/4 inch female inverted flare auxiliary inlet with check valve x 1 inch-20 MNPT outlet x 1-5/16 inch male ACME (female POL) outlet with quick closing poppet.