Flow Divider Series MTDA - BUCHER Hydraulics - #1

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Flow Divider Bi-directional Series MTDA 1/4 Reference: 100-P-000052-E-05 Issue: 07.09  These valves do not require maintenance.  Flows can be split or merged with accuracy (divide/combine functions).  The flow division ratio can be altered to suit customer requirements.  For two hydraulic cylinders working in parallel mode exists optionally the possibility of balancing the lag at the end 1 Description 1.1 General Series MTDA units are flow dividing valves that operate automatically. They are intended for use with hydraulic fluids. They divide a flow, the total rate of which may be va- ried, into two usually equal parts. When flow passes through a valve in the opposite direction, the two part-flows are combined into one single flow (added). The dividing and combining functions are largely independent of the pressures of the two divided flows and of the fluid viscosity. If the valve has an unequal division ratio, the larger part-flow must always be through port B. In order for the valve to work properly, a continuous flow is required at all ports. For example, if one actuator is no longer able to move, then the other part-flow will also be restricted. If the two actuators served by the flow divider operate at different pressures, then the pressure of the total flow entering the valve will correspond to the higher of the two actuator pressures. Large pressure differences may give rise to significant heat generation, which must be taken into consideration when designing the system. 1.2 Application examples  Work access platforms  Lifting platform  Harvesters  Municipal equipment  Snow/ice clearing equipment  Wood chippers  Raod rollers  Tail lifts 2 Symbols A B P 3 Technical data General characteristics Description, value, unit Maximum operating pressure 315 bar Oil temperature range -20 °C ... +80 °C Viscosity range 10 mm2/s ... 300 mm2/s Filtration min. class 9 of NAS 2638 or class 20/18/14 of ISO 4406 Nitrile seals NBR