SUN Overflow Valve PBDB-LWN Recommended For Reverse Free Flow Cartridge Valve

Pilot-operated pressure reducing valves efficiently lower high primary pressure at the inlet (port 2) to maintain constant reduced pressure at port 1. This enables circuits with multiple pressure requirements to operate using a single pump.

• Three-port pressure reducing and reducing/relieving cartridges are physically interchangeable
• EPDM seals are specifically designed for systems using phosphate ester fluids
• Main stage orifice protected by 150 micron stainless steel screen
• Features Sun floating style construction to prevent internal parts binding
• Exceptional pressure/flow characteristics with high stability and low hysteresis

Important Notes: Full reverse flow may cause main spool closure - consider adding a separate check valve if reverse free flow is required. Pilot operated valves are not fast-acting; for superior dynamic response, consider direct acting valves.