96770797 is a tube fitting elbow used on several models of their UP6 5-15C and R4-11i rotary screw air compressors.
This typically connects to the inlet valve on one side and connects to the blue 6mm poly tubing on the other end.
This is an OEM part from Ingersoll Rand.
Part #: 23972854
Part #: 24820409
Part #: 24081648
Part #: 47499582001
Part #: 92490358