DG4V32NWB11

The DG4V32NWB11 valve from Vickers belongs to the DG4 Directional Valves series and is used to shift hydraulic flow paths in automation circuits. It employs a closed center spool to block all ports in the neutral position, allowing downstream actuators to remain hydraulically locked when the valve is centered. The pressure rating for the P, A, and B work ports is 350 bar (5000 psi), enabling the unit to operate in high-pressure industrial systems. Tank port pressure is limited to 207 bar (3000 psi) so designers must size the return line reliefs accordingly. Electrical actuation is routed through a W-style terminal box, simplifying field wiring inside protective enclosures.

The valve mounts on a subplate that follows the ISO 4401-03/CETOP 3/NFPA D03 pattern, ensuring interchangeability across standardized manifolds. Four M5 × 0.8 bolts secure the body, and the threads hold the clamping force required for the rated system pressure. Proper installation demands a mounting surface flatness within 0.013 mm to avoid external leakage. Surface roughness must not exceed 1.1 µm Ra so that the soft seals conform uniformly to the plate face. Together these mechanical tolerances maintain seal integrity and allow the DG4V32NWB11 to function reliably within automated hydraulic machinery.