Sun Hydraulics Flow Divider-Combiner Valve - Synchronizing - FSDSXAN

Features
 • Synchronizing flow divider/combiners are sliding-spool, pressure-compensated devices used to split flow in one direction and combine flow in the opposite direction
 • With a sychronizing feature, these valves can be used to allow two hydraulic cylinders to fully stroke and synchronize at the end of the stroke
 • When the first cylinder has reached the end of its stroke, a pressure-compensated, reduced flow is metered to or from the second cylinder until it also reaches the end of its stroke
 • 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 combining mode, compensating characteristics will cause the leg of the circuit with the lowest load to receive the higher percentage of flow
 • If a synchronization feature is not included, an additive accuracy error will be experienced with each full stroke of the actuator
 • 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
 • Extreme pressure intensification can occur on multiple wheel drive vehicles
 • The synchronization feature provides bi-directional static error correction
 • Synchronization flow is approximately 15% of minimum rated input flow
 • Divisional and combining accuracy are equal
 • The synchronizing feature only comes into play when any one of the 3 ports is blocked
 • At that time, flow may occur between the other two ports
 • 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 or combining 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

Specifications

 • Cavity : T-32A
 • Series : 2
 • Capacity : 3 - 15 gpm
 • Maximum Operating Pressure : 5000 psi
 • Divisional Accuracy at Minimum Input Flow : 50% ±4.5%
 • Divisional Accuracy at Max Input Flow : 50% ±2.5%
 • Pressure Drop at Minimum Rated Input Flow : 30 psi
 • Pressure Drop at Maximum Rated Input Flow : 350 psi
 • Valve Hex Size : 1 1/8 in.
 • Valve Installation Torque : 45 - 50 lbf ft
 • Model Weight : 0.60 lb.
 • Seal kit - Cartridge : 990032007
 • Seal kit - Cartridge : 990032002
 • Seal kit - Cartridge : 990032006

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