Hydac
SD Series Flow Control Valves

Key Features

  • standardized installation dimensions mean that they are flexible and suited to many different applications,
  • their compact design enables space–saving installation in connection housings, control blocks, etc. especially where the installation space is confined,
  • flow control spindle safety mechanism prevents spindle from working loose,
  • a set–screw locks the setting,
  • simple assembly due to service–friendly cartridge valve technology,
  • a wide range of connection housings is available for inline and sandwich mounting.
Applications

  • for regulating the speed of loads,
  • for system–related damping in hydraulic circuits,
  • for pressure–dependent control of flow rates in general,
  • to release pressure from accumulator systems,
  • as an emergency drain for lowering a load.
  • hydraulic units
  • elevating platforms
  • mobile hydraulics

Quote Request
Click to Enlarge

According to DIN–ISO 1219, HYDAC flow control valves SD10 are valves for oil hydraulic systems to control the flow rate by means of an adjustable cross section.

The flow rate depends on the pressure differential and the viscosity.

HYDAC flow control valves SD10 enable a fine adjustment of the flow rate due to a specially designed throttle mechanism. 

The flow control and shut–off function works in both directions.

Nominal pressure

  • pN = 350 bar across all ports

Operating fluid

  • Mineral oil to DIN 51524
  • Part 1 and Part 2

Operating fluid temperature range

  • min. – 20 °C
  • max. + 80 °C

Viscosity range

  • min. 2.8 mm2/s
  • max. 800 mm2/s

Filtration

  • Max. permissible contamination level of the operating fluid to NAS 1638 Class 10. We therefore recommend a filter with a minimum retention rate of ß20  100. The fitting of filters and regular replacement of elements guarantees correct functioning, reduces wear and tear and increases the service life.

Type of adjustment

  • Manually with control knob