Product Overview
The Rexroth Z1S 6 T05-40/V (Material Number: R901086058) is a direct-operated check valve designed for modular hydraulic system integration. Part of the Rexroth Z1S series, this valve functions as a leak-free shut-off element that permits free flow in one direction while positively blocking reverse flow. The “T05” designation indicates a nominal size 6 (NG6 / CETOP 3) sandwich plate valve with a specific cracking pressure and spring configuration, while the “40” series denotes the current Rexroth design generation. The “/V” suffix identifies the seal material as FKM (fluorocarbon), making it suitable for use with phosphate ester (HFD) fluids and elevated temperature operation. This valve is engineered for stacking between directional control valves and subplates in modular manifold systems, providing reliable isolation and load-holding capability in demanding industrial hydraulic circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Check Valve (Modular Sandwich Plate Type) |
| Model Designation | Z1S 6 T05-40/V / R901086058 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401-03) |
| Operating Pressure | Up to 315 bar (standard industrial grade) |
| Cracking Pressure | Approx. 0.5 bar (T05 spring configuration) |
| Seal Material | FKM (Fluorocarbon) — /V variant |
| Mounting & Connection | Sandwich plate, ISO 4401-03-02-0-05 interface |
| Flow Direction | Free flow in one direction, leak-free shut-off in reverse |
Engineering Features & Advantages
- Precision Performance: Direct-operated poppet/seat design ensures fast, positive closure with minimal pressure drop in the free-flow direction and zero leakage in the blocked direction, providing reliable load-holding and isolation in modular circuits.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened seat and poppet components resisting wear and contamination-induced degradation over extended service intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including the ISO 4401-03 mounting pattern and Rexroth modular stacking dimensions, ensuring drop-in interchangeability without manifold modification.
- FKM Seal Compatibility: The /V seal variant extends fluid compatibility to phosphate ester (HFD) and high-temperature mineral oil applications, broadening the valve’s suitability across diverse hydraulic power units.
- Modular System Integration: Sandwich plate construction allows direct stacking between directional valves and subplates, reducing piping complexity and potential leak points in compact manifold assemblies.
Typical Industrial Applications
This Rexroth Z1S 6 T05-
PRODUCT IMAGES
REXROTH Z1S 6 T05-40/V / R901086058 Check Valve
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Shop the genuine REXROTH Z1S 6 T05-40/V / R901086058 Pilot-Operated Pressure Relief Valve. This Germany-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.