Prince RD513AA5A4B1 One Spool, Single-Acting

20-1001-75 Prince 513AA5A4B1 One Single-Acting spool, All ports 3/4 npt.

Single acting valves: plug "A" port and use "B" port (farthest from handle)

All Prince valves are now painted black.

Convert to closed center - use 312005 conversion plug. Power Beyond - use 312008 conversion plug. Replacement Parts here