Hv20-Lc-12 ( 3000 ) 10-D4 - 10-04 - Rc12-E Inlet/Outlet # 12 O.Ring ( Mrv Set At 3000 Psi ) # 1 Section Dual Acting Cylinder Spool, 3 Position De-Tent, # 10 O.Ring Ports, # 2 Section, Dual Acting Cylinder Spool, Spring Return, # 10 O.Ring Ports, Outlet.