SV10PB2-4X/V

The SV10PB2-4X/V valve is produced by Bosch Rexroth within the Hy-Check Valves series. It secures hydraulic actuators until a pilot signal releases the poppet, making it suitable for load-holding functions in automated machines. The nominal size NG10 provides a flow cross-section sized for medium-capacity cylinders. Subplate mounting shortens service time by letting the body lift free of a manifold without disturbing pipework. The porting pattern ISO 5781-06-07-0-16 matches common NG10 interfaces used in power units. An internal pilot oil return eliminates a separate drain hose, and the 2.5 cm³ pilot volume lets the poppet open quickly once the pilot gallery is pressurized. The valve demands at least 5 bar pilot pressure, preventing accidental unlocking from minor pressure spikes. A cracking pressure of 3.0 bar keeps the check element sealed when the circuit is idle. Flow passes freely from port A to port B, while the reverse path remains closed until the pilot opens the poppet, supporting precise actuator control.

The valve tolerates system pressures up to 350 bar, enabling integration in high-pressure presses and mobile power packs. Pressure media must be filtered so that fluid cleanliness stays at ISO 4406 (c) 20/18/15, which limits particle wear on the seating surfaces. Assembly to the manifold uses four M10 × 50 screws of strength class 10.9 according to ISO 4762, ensuring adequate clamp load against pressure-induced separation. Any installation position is permitted, giving designers freedom to orient the block within crowded cabinets. Flexible FKM seals resist heat and common hydraulic oils, maintaining leak-tight joints over extended duty cycles. An MTTF-d of 150 years reflects the statistical reliability expected in safety-related circuits. The body weighs 1.8 kg, keeping the manifold light enough for manual handling during service. Together, these parameters confirm compatibility with demanding hydraulic automation tasks that call for durable check behavior and predictable pilot release.