Gresen Priority Flow Divider
Gresen Priority Flow Divider is designed for applications where two separate hydraulic power circuits are to be run from a single pump. First of all the priority flow divider provides priority flow to the primary circuit. In addition any excess flow is sent to a secondary circuit or back to tank. Furthermore an optional hand adjusting knob with 12 positions is available to adjust the flow from 1 to 20 GPM [3.8 to 76 litres/min] at the controlled-flow port.</p><p>Flow enters the inlet port and passes through a control orifice. The control orifice size is fixed in the non-adjustable unit or can be varied externally in the adjustable unit. Flow through the control orifice causes a pressure drop, which is sensed across the compensator spool. Any tendency to exceed the flow setting increases this pressure drop causing the spool to shift and bypass the excess flow. If the secondary circuit (excess flow) pressure is greater than the controlled-flow pressure, the spool will shift even further and begin to throttle the controlled-flow to maintain the preset value. If the controlled-flow port is blocked, the compensator spool will return to the closed position allowing no flow through the Flow Divider. To protect the system, if this condition occurs, an optional differential relief valve may be installed in the controlled-flow circuit to insure flow to the secondary circuit under all operating conditions is maintained.