Product Overview
The Rexroth Z2S 6-3-64 (Material No. R900347497) is a pilot operated check valve from the proven Z2S series, designed for leak-free load holding and controlled blocking of flow in one direction while permitting free flow in the opposite direction. As a sandwich plate (modular) valve conforming to ISO 4401 / DIN 24340 size 6 (NG6 / CETOP 3), it mounts directly between a directional control valve and a subplate, eliminating the need for additional piping and simplifying manifold integration. The valve remains closed under spring force until a pilot pressure signal is applied at the pilot port, at which point the poppet is hydraulically unseated to allow reverse flow. This working principle makes the Z2S 6-3-64 an essential component for reliable load retention, cylinder locking, and prevention of drift in demanding industrial hydraulic circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot Operated Check Valve (Sandwich Plate / Modular Design) |
| Model Designation | Z2S 6-3-64 / R900347497 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401 size 6) |
| Operating Pressure | Up to 315 bar (working pressure, standard industrial grade) |
| Cracking / Pilot Pressure | Pilot ratio dependent on configuration; spring-held poppet with defined pilot pressure requirement |
| Mounting & Connection | Sandwich plate interface per ISO 4401 / DIN 24340, NG6 port pattern |
| Sealing | NBR (Buna-N) seals, suitable for mineral oil based hydraulic fluids |
| Fluid Compatibility | Mineral oil (HL, HLP) per DIN 51524; other fluids on request |
Engineering Features & Advantages
- Leak-Free Load Holding: The spring-loaded poppet seat design provides tight shut-off in the blocked direction, preventing actuator drift and maintaining load position even during extended dwell periods.
- Pilot Controlled Release: Reverse flow is enabled only when pilot pressure acts on the poppet, ensuring controlled and safe decompression of the circuit before movement.
- Modular Sandwich Construction: The NG6 sandwich plate design integrates directly into existing valve stacks, reducing installation space, piping, and potential leak points.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened poppet and seat for long service life and consistent sealing performance.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in interchangeability.
Typical Industrial Applications
The Rexroth Z2S 6-3-64 is widely
PRODUCT IMAGES
REXROTH Z2S 6-3-64/ / R900347497 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.
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- 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 6-3-64/ / R900347497 Pilot Operated Check Valve. This Germany-made hydraulic component features a leak-free poppet design, delivering reliable fluid control for heavy-duty industrial systems.