Switch Valves

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Rating: 4.6 (31 reviews)

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Long description	This Hydraulic Integrated Circuit (HIC) regulates fan speed by controlling the pressure drop across the fan motor. In the absence of an electrical signal, it operates in a normally closed configuration and reverses the hydraulic flow to the fan motor to enable fan reversal. This function is particularly useful for cleaning coolers and radiators (de-clogging), improving cooling efficiency, and preventing overheating. The HIC incorporates a DV15-P5-FD open-transition spool valve designed to minimize pressure spikes during direction changes. An integrated proportional relief valve provides precise modulation of fan speed in circuits utilizing a fixed-displacement pump. A built-in anti-cavitation feature ensures additional oil supply to the motor when it over-runs the pump, while pressure spikes at the work ports are absorbed to limit maximum motor torque.
Pros	Reduced pressure spikes during reversals
Product details	Regulates fan speed by controlling pressure drop across the fan motor Operates in a normally closed configuration in the absence of an electrical signal It trims the maximum motor torque by absorbing pressure spikes at the work ports An anti-cavitation feature allows additional flow to the motor when the motor over-runs the pump A drain port is included for motor case drain Includes an integrated proportional relief valve to modulate fan speed in circuits using a fixed pump Model code : RFDE-80-PRV-R24D-DE-U-240-00-6B