Pressure Valves
Pressure reducing valves, proportional
Proportional pressure reducing valves from Bosch Rexroth hold the pressure in a sub-circuit at an electrically set value, independent of the higher supply pressure. Clamping, holding and pressing forces can thus be controlled steplessly and reproducibly from the machine control.
The range includes 2-way valves of the DRE, DREM and DREME series and 3-way valves of the 3DRE series with the 3DREP, 3DREPE and 3DREM variants, which additionally relieve the actuator to tank when the setpoint drops. Sandwich plate valves ZDRE and Z3DRE are mounted between subplate and directional valve. An additional E in the type code, as in DREE, DREME or 3DREPE, stands for integrated electronics.
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Buying guide
How to choose Pressure reducing valves, proportional
What matters when choosing: properties, comparison and typical applications.
Selection criteria
| Criterion | Options | What to look for |
|---|---|---|
| Number of ways | 2-way (DRE, DREM, DREME), 3-way (3DRE, 3DREP, 3DREM) | 3-way valves actively relieve pressure to tank when the setpoint drops. |
| Electronics | external amplifier or integrated electronics (E in the type code) | Valves without integrated electronics need a matching valve amplifier. |
| Design | subplate mounting, sandwich plate (ZDRE, Z3DRE) | The sandwich plate controls the pressure for exactly one directional valve. |
| Pressure rating | coded in the type designation, e.g. /200 | The pressure rating is the highest adjustable outlet pressure. |
| Seal and voltage | NBR or FKM, 24 V DC solenoid | FKM for higher temperatures and special fluids. |
Frequently asked questions
- What is the difference between 2-way and 3-way reducing valves?
- A 2-way valve only throttles the inflow. A 3-way valve also opens from the actuator to tank when the pressure is above the setpoint, so the pressure drops quickly even when the actuator is not moving.
- What is the sandwich plate version used for?
- ZDRE and Z3DRE are fitted into the valve stack under a directional valve and control the pressure for that one actuator only, without separate piping.
- Do I need a separate valve amplifier?
- For valves without integrated electronics, yes. Types with the E suffix such as DREE, DREME or 3DREPE carry the electronics on the valve and receive the setpoint directly.