1 3/4″ ACME x 1/4″ Female Pipe Thread
$20.60 – $27.49
1-3/4″ Male Acme x Female Pipe Thread Adapter
1 3/4″ ACME x Female Pipe Thread – Marshall Excelsior ACME adapter. One end of the adapter is a male 1 ¾” ACME which is the same type of connection you find on a fill valve and the other end of the fitting is FNPT (female pipe thread).