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Model

FSBDXAN

Control
Flow Split
Seal Material
Material/Coating

High accuracy flow divider valve

Cavity: T-31A | Capacity:

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Model

FSBDXAN

Control
Flow Split
Seal Material
Material/Coating

Technical specifications

Flow dividers are sliding-spool, pressure-compensated devices used to split oil flow to two different branches of a circuit in a designated ratio. These valves are suitable for applications that use the following: unidirectional hydraulic motors, hydraulic cylinders where flow division in one direction only is required, and multiple circuits that are serviced from one pump supply.

  • All flow divider and divider/combiner cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size).
  • Operating characteristics cause the leg of the circuit with the greatest load to receive the higher percentage of flow in dividing mode. If a rigid mechanism is used to tie actuators together, the lead actuator may pull the lagging actuator and cause it to cavitate.
  • In applications involving rigid mechanisms between multiple actuators, operating inaccuracy will cause the eventual lock-up of the system. If the mechanical structure is not designed to allow for the operating inaccuracy inherent in the valve, damage may occur.
  • In motor circuits, rigid frames or mechanisms that tie motors together, and/or complete mechanical synchronized motion of the output shaft of the motors, either by wheels to the pavement or sprockets to conveyors, will contribute to cavitation, lock-up and/or pressure intensification.
  • Variations in speed and lock-up can be attributed to differences in motor displacement, motor leakage, wheel diameter variance and friction of wheels on the driving surface.
  • This valve is a divider only; any attempt to flow backwards through the valve is not advised.
  • Dividers with unequal ratios have the higher flow at port 4.
  • Below the minimum flow rating there is not enough flow for the valve to modulate. It is effectively a tee. If flow starts at zero and rises, there will be no dividing control until the flow reaches the minimum rating.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
  • Cavity
  • Series
  • Capacity
    .6 - 3 gpm
  • Maximum Operating Pressure
    5000 psi
  • Divisional Accuracy at Max Input Flow
    ±2.5%
  • Divisional Accuracy at Minimum Input Flow
    ±4.5%
  • Pressure Drop at Maximum Rated Input Flow
    250 psi
  • Pressure Drop at Minimum Rated Input Flow
    30 psi
  • Rated Input Flow with 33/67 Split
    .45 - 2.2 gpm
  • Rated Input Flow with 40/60 Split
    .5 - 2.5 gpm
  • Rated Input Flow with 50/50 Split
    .6 - 3 gpm
  • Valve Hex Size
    7/8 in.
  • Valve Installation Torque
    30 - 35 lbf ft
  • Model Weight
    .60 lb
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge

Model CAD Files

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Symbol CAD Files

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  • What parts of the Sun cartridge valve are field serviceable?
  • How big do my slip orifices have to be?
  • Why does Sun use 2 slip orifices?
  • Why am I getting a higher inaccuracy than Sun claims?
  • Most of the dividing-combining inaccuracies will average out, won't they?
  • Most of Sun's divider-combiners will do better than the published specs, won't they?
  • Can I synchronize two cylinders with Sun's divider-combiner?
  • How big is a drop of hydraulic oil?  
  • What is the synchronizing feature?
  • How has Sun solved the hook breaking problem?
  • What is a priority flow divider?

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