Product Overview
The Rexroth Z2S 6-1-64/ (Material Number R900347495) is a pilot operated check valve designed for leak-free load holding and reliable blocking of flow in one direction while permitting free flow in the opposite direction. As part of the Rexroth Z2S series of modular sandwich plate valves, this unit is engineered for direct mounting onto standard ISO 4401-03 (NG6 / CETOP 3) subplates and manifold interfaces. The valve remains closed under spring force until a pilot pressure signal is applied to the pilot port, which hydraulically unseats the poppet and allows reverse flow. This design makes the Z2S 6-1-64/ an essential component for preventing load drift, uncontrolled descent, and actuator creep in demanding industrial hydraulic circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot Operated Check Valve (Modular / Sandwich Plate Design) |
| Model Designation | Z2S 6-1-64/ (R900347495) |
| Nominal Size | NG6 / CETOP 3 / ISO 4401-03 |
| Operating Pressure | Up to 315 bar (working pressure, port A/B) |
| Cracking / Pilot Pressure Ratio | Pilot ratio approximately 1:4.5 (dependent on spool configuration) |
| Mounting & Connection | Sandwich plate, ISO 4401-03-02-0-05 interface, 4 x M5 mounting bolts |
| Sealing Material | NBR (Buna-N) standard; FKM available on request |
| Fluid Compatibility | Mineral oil based hydraulic fluids (HL, HLP, HLPD per DIN 51524) |
Engineering Features & Advantages
- Precision Performance: Spring-loaded poppet design delivers zero-leak sealing in the blocked direction, ensuring accurate load holding and preventing actuator drift in vertical or suspended load applications.
- Pilot Operated Unlocking: Hydraulic pilot signal at port X unseats the poppet, enabling controlled reverse flow with minimal pressure loss and smooth decompression of the load circuit.
- Modular Sandwich Construction: Compact NG6 sandwich plate format integrates directly between directional control valve and subplate, eliminating additional piping and reducing installation footprint.
- Industrial Reliability: Hardened and precision-ground internal components are built for continuous operation under severe industrial conditions, high cycle rates, and elevated system pressures.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in interchangeability without manifold modification.
Typical Industrial Applications
The Rexroth Z2S 6-1-64/ pilot operated check valve is widely deployed in hydraulic
PRODUCT IMAGES
REXROTH Z2S 6-1-64/ / R900347495 Pilot Operated Check 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 Z2S 6-1-64/ / R900347495 Pilot Operated Check Valve. This Germany-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.