630AA00008A

The 630AA00008A manifold block is produced by Vickers within the Manifold Blocks series and forms a compact hydraulic node that channels pressure and return flow to connected actuators. One directional control valve cavity directs oil to extend or retract a cylinder, while a proportional flow control valve location modulates speed for smoother motion. Two double check valve seats prevent unintended backflow to hold loads in position. Six size -6 ORB ports provide the main supply and service connections for hoses or tube assemblies commonly used in mobile equipment. A built-in relief valve passage is tuned to open at 3000 psi to protect pumps and hoses from over-pressure. The block’s mass of 6.114 kg permits rigid mounting on standard plates without reinforcement.

Threaded closures and seals complete the interface options. Two 3/4-16 ORB hex plugs cap large passages that may not be used in every circuit, and three 9/16-18 ORB hex plugs serve the same function on medium ports. A 1/2-20 jam nut thread locks a screw-in element such as the relief cartridge after adjustment. Three -906 O-rings with 90-durometer hardness seal larger cavities, while two -908 O-rings of the same hardness handle smaller bores to maintain leak-free operation. Two size -5 ORB ports give technicians auxiliary taps for pressure gauges or pilot lines without interrupting primary flow paths. Together, these connection and sealing details permit dependable installation and straightforward service within hydraulic automation systems.