Sdv70- A88Ah(3500)Db8-Da8-Hbhda833(2250/2250)Da8-Ttr99 Inlet # 16 O-Ring Ports Top And Side ( Mrv Set At 3500 Psi ) 1St Section, Double Acting Cylinder Spool, 3 Position Detent, # 16 O-Ring Ports, 2Nd Section, Double Acting Cylinder Spool, Spring Return, # 16 O-Ring Ports, 3Rd Section, Hi-Boy Double Acting Cylinder Spool, Spring Return, # 16 O-Ring Ports, A & B Port Reliefs Set At 2250 Psi, 4Th Section, Double Acting Cylinder Spool, Spring Return, # 16 O-Ring Ports, Outlet, # 20 O-Ring Ports Top And Side.