Hydraulic sub-plates are standardized connection blocks used to install directional valves and route pressure and return flow within hydraulic systems. This product group includes CETOP subplates, valve mounting plates and sandwich-type bases, with a strong focus on Parker Hannifin MSP and SPD series. Typical designs cover NG6 and NG10 interfaces with defined pressure, tank and actuator ports, suitable for single-valve or stacked valve arrangements. Parker MSP and SPD sub-plates support modular system design and consistent valve interchangeability. Products are delivered as original Parker parts, supported by technical support resources and global express shipping options.