Gresen Priority Flow Divider

Gresen’s model DC25 Priority Flow Divider is designed for applications where two seperate hydraulic power circuits are to be served from a single pump. The Flow Divider provides priority flow to the primary circuit, and any excess flow to a secondary circuit or tank.

An optional hand adjusting knob with 12 positive detent positions is available for readily adjusting the flow from 1 to 20 GPM [3.8 to 76 litres/min] at the controlled-flow port.

Flow enters the inlet port and passes through a control orifice. The control orifice is of fixed size 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 exccess 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 flow.

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 accurs, an optional differential poppet relief valve may be installed in the controlled-flow circuit to insure flow to the secondary circuit under all operating conditions.

Features

• Differential Poppet Relief Valve in the controlled-flow circuit – also available without relief valve.
• Available with adjustable or non-adjustable flow in controlled-flow circuit
• Adjustable divider offers 12 flow adjustment positions (positive detents) in 360° rotation of knob.
• High-Strength Cast Iron Body
• Hardened metering spool.
• Excess flow can be used in a secondary circuit.

Specifications

• Capcity (nominal)………………………………….30 GPM [113 litres/min]
• Max operating pressure………………………………..3500 PSI [242 bar]
• Minimum operating pressure drop………………………..70 PSI [4.8 bar]
• Knob Rotation (full adjustment)………………………………………..360°
• Filtration required (min.)…………………………………….33 micrometre