Bosch 0811104111 ZDBT-XP8-1X 315 Hydraulic Pressure Relief Valve

Bosch Rexroth 0811104111 ZDBT-XP8-1X/315 is a hydraulic pressure relief valve engineered for subplate mounting in control panels and sandwich-plate manifolds. The model belongs to the 1X component series with an XP8-1X cartridge and carries a maximum operating pressure of 315 bar (approximately 4,570 psi), making it suitable for mid- to high-pressure hydraulic circuits. In operation, the valve vents excess fluid when the system pressure reaches the preset relief setting, routing flow from the pressure side toward the return/tank to protect pumps, actuators, and downstream valves from overpressure. The ZDBT-XP8-1X/315 configuration supports compact, modular installation in panel-mounted layouts, allowing precise, banked protection across multiple circuit branches without extensive external plumbing. This makes it a practical choice for industrial hydraulic systems requiring reliable, repeatable pressure cutoff at a known setpoint. The part number 0811104111 uniquely identifies this Bosch Rexroth model, and the ZDBT-XP8-1X/315 designation communicates the exact valve family, cartridge arrangement, and 315 bar rating for correct cross-reference in assemblies and catalogs.