Heash Technique B.V. supplies 100% new and original Rexroth STW series proportional directional valves with competitive pricing, official warranty and reliable lead time.
The Rexroth STW series is a direct-operated 3-way proportional directional valve with integrated pQ (pressure/flow) control functionality, equipped with factory-calibrated IAC-P digital on-board electronics. Featuring a position-controlled spool and optional integrated pressure sensor plate, it delivers simultaneous pressure and flow closed-loop regulation in a single compact unit.
Actuated by a proportional solenoid with central thread and detachable coil, the valve supports both analog command signals and field bus communication (CANopen / Profibus DP). It adopts standard ISO 4401 subplate mounting for seamless system integration, and can be quickly commissioned via WINPED PC software. It is widely used as a pilot control element for hydraulic pumps and in small-flow precision pressure/flow regulation circuits.
Rexroth Proportional Valve STW Key Features
Integrated pQ Control Electronics – Factory-calibrated IAC-P digital on-board electronics integrate flow control, pressure control and pQ override control in one Rexroth STW 3-way proportional directional valve, eliminating separate amplifier cards to reduce cabinet space and wiring cost.
High-Precision Closed-Loop Control – Inductive spool position transducer enables full closed-loop regulation, delivering ≤ 0.1% hysteresis and excellent repeatability, ensuring stable and accurate flow and pressure control for industrial hydraulic circuits.
Flexible Communication Interfaces – Supports both analog command/actual value signals (±10 V / 4–20 mA) and field bus communication via CANopen (DS 408 protocol) or Profibus DP, compatible with various digital control architectures.
Standard ISO 4401 Mounting – Fully compliant with ISO 4401 porting pattern, allowing direct drop-in installation and replacement of existing proportional valves without manifold modifications, minimizing retrofit time and cost.
Optional Integrated Pressure Sensor – Available with built-in pressure sensor plate in 50 / 160 / 250 bar ranges, realizing closed-loop pressure control without external pressure transducers for more compact system design.
Robust & Service-Friendly Design – Central-thread detachable solenoid coil simplifies on-site maintenance; IP65 protection with properly locked mating connectors; fast parameter setup and fault diagnosis via WINPED PC software, suitable for harsh industrial environments.
Rexroth Valve STW Key Specifications
(Note: Specifications below apply to STW 0195 (size 6) and STW 0196 (size 10) series.)
Valve Type: Direct-operated 3-way proportional directional valve with pQ control function
Nominal Sizes: 6 (STW 0195), 10 (STW 0196)
Component Series: 1X (size 10), 2X (size 6)
Maximum Operating Pressure (subject to integrated sensor range):
• 50 bar sensor: 50 bar (ports P, A, B, T)
• 160 bar sensor: 160 bar (ports P, A, B, T)
• 250 bar sensor: 250 bar (ports P, A, B); 210 bar (port T)
As a dedicated 3-way pQ proportional pilot valve for SY(H)DFE variable pump systems, the STW series delivers precise synchronized pressure & flow closed-loop control for stationary industrial hydraulic equipment:
Injection Molding & Die Casting Machines – Stable pump pressure/flow regulation for clamping, injection and holding circuits, cutting energy consumption during standby cycles.
CNC Machine Tools & Metal Forming Equipment – Stepless hydraulic power adjustment for grinding, stamping and deep-drawing production lines, guaranteeing consistent machining precision.
Material Test Benches & Calibration Equipment – Ultra-low hysteresis and high repeatability meet strict pressure/flow curve test requirements.
Hydraulic Power Units – Compact integrated pQ control replaces separate pilot valves and pressure sensors, simplifying modular pump station design.
Precision Press Equipment – Real-time p override control adapts to varying forming loads to stabilize output performance.
Commonly Requested Material Numbers (MNR)
Below are frequently ordered STW models. If your part number is not listed, please contact us freely.
Rexroth Proportional Directional ValveType STW 0195 and STW 0196
Valve STW is an electro-hydraulic proportional directional valve from Bosch Rexroth. Rexroth STW was developed based on Rexroth's long-term technical accumulation and experience, inheriting its expertise in the hydraulic and pneumatic fields. The advantages as: 1). Compact structure, small footprint, suitable for various hydraulic systems. 2). Fast response speed, able to quickly control and adjust the direction of the fluid. 3). High control accuracy can meet the needs of high-precision control. 4). Long service life, reducing the frequency of maintenance and replacement. Widely used in various hydraulic systems to achieve directional control and regulation of fluids. The Rexroth STW series directional valve can be configured according to different systems and control requirements to meet the usage requirements under different working conditions.
Rexroth Valve STW Features
- 3-way proportional directional valve with integrated IAC-P digital control electronics
- Completely adjusted unit consisting of position-controlled valve, pressure sensor and field bus connection.
- Operation via a proportional solenoid with central thread and detachable coil
- Valve spool, position-controlled
- Integrated pressure sensor plate (optional)
- ISO 4401 porting pattern
- Analog interfaces for command and actual values
- Design for CAN bus with DS 408 CANopen protocol or DP Profibus
- Quick commissioning via PC and WINPED commissioning software
Rexroth STW valves are mainly used in the following fields: 1), Rexroth STW is mainly used in electro-hydraulic servo control systems, such as hydraulic systems in machine tools and wind power generation fields. In the field of machine tools, the use of Rexroth STW hydraulic products can more conveniently achieve stepless speed change, adapt to various speed choices, and greatly simplify the mechanical structure, making the operation of hydraulic devices more convenient and easy to achieve automation. In the field of wind power generation, Rexroth STW hydraulic products have also been greatly applied, involving multiple hydraulic components such as hydraulic pumps, relief valves, and accumulators. 2), In the field of engineering machinery, including excavators, loaders, cranes and other equipment, complex motion control and adjustment are required. Rexroth STW hydraulic control valve can provide precise and stable control performance. 3), Metallurgical equipment field: Metallurgical equipment requires high-precision and highly reliable hydraulic systems to control various movements, and Rexroth STW valves can meet these needs. 4), Ship field: Ship hydraulic systems need to adapt to harsh environmental conditions at sea while meeting various complex control requirements. STW valves have high quality and reliability, making them widely used. 5), In addition, Rexroth STW valves are also widely used in other fields that require hydraulic control, such as petrochemical, mining machinery, etc.
HEASH TECH is pleased to be your components source for hydraulics and electronics from Europe. Welcome enquiry us if you demand Rexroth valve STW or any other Rexroth valves, pumps, motors, as: Rexroth Prop./Servo Valves: 4WRAE, 4WRZE, 4WREE, 4WRPEH, 4WRKE, 4WRDE, 4WRTE, DBEME, 4WS2EM, 4WSE3E, 4WRSEH, 3DREME, 3DREPE, VT-DFPE, M-3SED, M-3SEW, STW, 2WFCE, 2WRCE, SCA, ZDC, DBW, DBWA, DBA, 3FRE, 2FRW, 4WRH, 3DRG, LC2A, Z4WEH, 4WRLE...; Rexroth Pump/Motor: A4VSO, A11VLO, SYDFEE, P A4VSG, A4CSG, A7VO, A7VK, A17FO, A4VG, PV7, A15VO, A6VM, A10VSO, A20VO, A2FM, A2FO, A4FM, A4FO...; Rexroth filter/element MNR as R928...=Hengst filter/element. HEASH also provide many top manufacturers hydraulic pumps, mobile pumps, valves, motors. please let us know what your demand and find out the answer. welcome contact now!
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