In a hydraulic schematic, a diamond symbol surrounding a component indicates that the component is mounted on or within a manifold block. A manifold block is a central, often custom-designed, block of metal (usually aluminum or steel) that provides a compact and organized way to mount multiple hydraulic components, such as valves, cartridges, and sensors. Instead of connecting individual components with numerous pipes and fittings, they are directly mounted onto the manifold block, with internal passages within the block connect....
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