Prince RD522ACAA5A4B1 One Single-, One Double-Acting

20-2012 Prince 522ACAA5A4B1 Two Spool Valve. 1st spool single-acting, 2nd spool double-acting. Both spring centered. 3/4" NPT in-out ports, 1/2" work ports. All Prince valves are now painted black.

*Single acting valves: plug "A" port and use "B" port

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