Product Overview
The Rexroth Z2S 10-2-37/ (Material No. R900421985) is a pilot operated check valve belonging to the Rexroth Z2S series of modular sandwich plate valves. Designed for leak-free load holding and reliable blocking of actuator lines, this valve is used to prevent reverse flow in a hydraulic circuit until a sufficient pilot pressure signal is applied to release the poppet. With a size 10 (NG10 / CETOP 5) interface, the Z2S 10-2-37/ integrates directly between a directional control valve and its subplate, providing a compact, space-saving solution for load holding, lowering control, and anti-drop protection in industrial hydraulic systems. The valve operates on a poppet-type sealing principle, ensuring virtually zero internal leakage in the blocked direction and precise, pressure-controlled release in the pilot direction.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot Operated Check Valve (Modular / Sandwich Plate Design) |
| Model Designation | Z2S 10-2-37/ |
| Material Number | R900421985 |
| Nominal Size | NG10 (Size 10 / CETOP 5) |
| Operating Pressure | Up to 315 bar (working pressure, standard industrial grade) |
| Pilot Pressure Ratio | Standard pilot ratio (approx. 1:3 to 1:4.5 depending on configuration) |
| Mounting & Connection | Modular sandwich plate, ISO 4401 / DIN 24340 / CETOP 5 interface |
| Sealing Principle | Poppet-type seat, leak-free blocking in closed direction |
| Fluid Compatibility | Mineral oil based hydraulic fluids (HL, HLP, HLP-D) |
Engineering Features & Advantages
- Leak-Free Load Holding: The poppet-type seat design provides virtually zero internal leakage in the blocked direction, ensuring reliable load holding and preventing actuator drift in suspended or vertical load applications.
- Pilot-Controlled Release: The valve opens only when a defined pilot pressure is applied, enabling controlled lowering and precise sequencing of actuator movements within the hydraulic circuit.
- Modular Sandwich Construction: The NG10 sandwich plate design mounts directly between the directional control valve and subplate, eliminating additional piping and simplifying system integration.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust internal components resistant to pressure spikes and contamination.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
With a size 10 (NG10 / CETOP 5) interface, the Z2S 10-2-37/ integrates directly between a directional control valve and its subplate, providing a compact, space-saving solution for load holding, lowering control, and anti-drop protection in industrial hydraulic systems.
PRODUCT IMAGES
REXROTH Z2S 10-2-37/ / R900421985 Pilot Operated Check Valve
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Shop the genuine REXROTH Z2S 10-2-37/ / R900421985 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.