Spool-type hydrodistributors with internal diameter dy=10 and relay electromagnetic control. Performance schemes of hydrodistributors are conducted in accordance with Federal Standards 24679-81: 24,34,55,65,573,574,574A. Connecting measurements of hydrodistributors with internal diameter dy=10mm correlates with ISO 4401-80. “Volumetric hydraulic circuit. Four-way hydrodistributors. Connecting surfaces” and Federal Standard 24679-81 “Spool-type Hydrodistributors for Pnom up to 320 MPa”