Two position, four way, five ported, single solenoid, spring return, 3/8", 5/8" & 3/4" NPT. This pneumatic valve set-up requires the use of external pressure regulators. (The Pressure Regulators must be sized to furnish the required torque.) For high cycle applications when a CLPC (Closed Loop Position Control) is used an accumulator is recommended to be installed in the inlet pressure line . (The accumulator must be sized to be 10 x the air required per engagement.)