4CK300-1-S-3

The 4CK300-1-S-3 valve belongs to the Check Valves series and is produced by Vickers for hydraulic automation loops that demand dependable reverse-flow blocking. This pilot-operated check design keeps an actuator locked until a pilot signal opens the flow path. The body length is 102.616 mm, or 4.040 in, while the height reaches 47.777 mm, or 1.881 in, giving the unit a compact footprint for manifold cavities. A screw-in cartridge mounting style lets technicians thread the valve directly into a machined cavity, minimizing external plumbing and preserving a clean system layout.

The valve is 47.777 mm wide, matching its height, which translates to 1.881 in when measured in inches. A 3:1 pilot ratio means the pilot line needs one-third of the load pressure to release the poppet, enabling controlled load descent in cylinder circuits. The balanced width supports even cavity sealing, and the cartridge format allows quick removal for service without disturbing nearby lines. These attributes promote space-efficient, reliable check functionality in automated hydraulic machinery.