Hydraulic Valve---Pilot opreated relief valve/solenoid controlled relief valve type DB/DBW is pilot controlled grade-2 concentric relief valve. Both main valve and pilot valve are cone structure. DB type valve is mainly used to control the pressure of system. DBW type valve can also do it can can release the pressure at anytime.
See larger image: DB Pilot Operated Relief /DBW Solenoid Controlled Relief Valves (Hydraulic Valve)
