Siedman (Xiamen) Hydraulic Technology Co., Ltd.

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1. Proportional flow control valve in 2-way version

Proportional flow control valves of the 2FRE ... type comprise a 2-way function. They are capable of controlling a flow indicated by the electrical command value in a pressure- and largely temperature-com ...

2. Proportional pressure relief valve in 3-way version

For hydraulic protection against an inadmissibly high electric control current at the proportional solenoid, you can optionally install a spring-loaded pressure relief valve as maximum pressure limitation ...

3. Hydraulic pressure reducing valve

Build-up of the pilot pressure in the control chamber as function of the command value. 
Actuator pressure present in port P1 to the spring chamber via channel and nozzle ...

4. High-response directional valves 4WRTE

With de-energized proportional solenoids central position of the main stage control spool due to centering spring and pressure feed back 
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5. Hydraulic valve with electrical position feedback

Valves of type 4WRKE are 2-stage proportional directional valves. They control the flow direction and size. The main stage is position-controlled so that the control spool position is independent ...