A Y McDonald co. AY 5186-167 780-784WDPP 770X36 SGL RISER PIT FPBVxFPDCK MNPT (Male National Pipe Thread) xMNPT (Male National Pipe Thread) AY 5186-167780-784WDPP 770X36 SGL RISER PIT FPBVxFPDCK MNPT (Male National Pipe Thread) xMNPT (Male National Pipe Thread)