The Sun DRBD-LAN is a high-performance, direct-acting, pressure reducing/relieving valve designed as a screw-in cartridge. This 3-port valve is engineered to regulate pressure in a specific portion of a hydraulic circuit. It maintains a constant reduced pressure at port 1 regardless of upstream pressure variations at port 2. Should the pressure at port 1 exceed the valve’s setting due to external forces or thermal expansion, the valve will relieve flow from port 1 to port 3 (tank), protecting the downstream circuit from overpressure conditions. Its robust construction and reliable performance make it an ideal choice for precise pressure control applications.