Product Overview
The Rexroth FTWE4 K1A/30-8 (Material Number: R900727801) is a solenoid-operated directional seat valve engineered for leak-free load holding and precise directional control of hydraulic fluid flow in industrial power units. As a poppet-type (seat) design within the Rexroth directional valve family, this valve achieves positive sealing in the closed position by seating a hardened poppet directly against a machined seat, eliminating the internal leakage inherent to spool-type designs. The FTWE4 series is actuated by a wet-pin AC or DC solenoid, shifting the poppet to connect or block flow paths with fast, repeatable response. With a nominal size of NG6 (CETOP 3 / ISO 4401-03 interface) and a maximum operating pressure of 315 bar, the FTWE4 K1A/30-8 is suited for circuits requiring zero-leak isolation, such as clamping, holding, and pilot-controlled load functions in injection molding, press, and machine tool systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Solenoid Operated Directional Seat Valve (Poppet Type) |
| Model Designation | FTWE4 K1A/30-8 |
| Material Number | R900727801 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401-03) |
| Operating Pressure | Up to 315 bar (ports P, A, B); tank port T limited per manufacturer data |
| Nominal Flow Rate | Up to 30 L/min (size 6 seat valve range) |
| Actuation | Wet-pin solenoid, single or double solenoid configuration |
| Sealing Principle | Metal-to-metal poppet seat, zero internal leakage in closed position |
| Mounting & Connection | Subplate mounting, ISO 4401-03-02-0-05 interface, 4 x M5 mounting bolts |
| Hydraulic Fluid | Mineral oil based hydraulic fluid per DIN 51524; viscosity range 10–800 mm²/s |
| Fluid Temperature Range | -20 °C to +80 °C (standard NBR seals) |
Engineering Features & Advantages
- Precision Performance: The integrated wet-pin solenoid, single or double solenoid configuration ensures precise, repeatable control with low hysteresis and stable performance across the full working range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
- Rated Capability: Rated for pressure ratings up to 315 bar and flow rates up to 30 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
With a nominal size of NG6 (CETOP 3 / ISO 4401-03 interface) and a maximum operating pressure of 315 bar, the FTWE4 K1A/30-8 is suited for circuits requiring zero-leak isolation, such as clamping, holding, and pilot-controlled load functions in injection molding, press, and machine tool systems.
PRODUCT IMAGES
REXROTH FTWE4 K1A/30-8 / R900727801 Solenoid Operated Directional Seat Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH FTWE4 K1A/30-8 / R900727801 Solenoid Directional Valve. This Germany-made hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
