Rexroth Hydraulic Relief Valve ZDR 6 DP0-45/40YM W80 For Different Configurations

The Bosch Rexroth R900323180 (ZDR) is a direct operated pressure reducing valve designed for sandwich plate mounting, offering precise control over system pressure in specific circuits. This model features:

• Robust housing with responsive control spool
• Durable compression spring for consistent secondary circuit pressure
• Adjustable via rotary knob or sleeve with hexagon and protective cap
• Internal control signal and pilot oil supply options (channel A, P, or B)
• External leakage oil drainage and integrated pressure gauge connection
• Optional check valve for free flow back from channel A to A
• ISO standard porting patterns with optional locating hole
• Various adjustment types including lockable rotary knobs
• Corrosion protection designs available

The valve operates by allowing hydraulic fluid to flow freely from channel A to A in the initial position. When pressure exceeds the set value, the control spool shifts to maintain constant pressure levels in channel A, making it ideal for systems requiring secondary pressure regulation.