Product Overview
The HAWE RH 3 V is a pilot-operated check valve (also referred to as a pilot-to-open check valve or pilot-controlled check valve) designed for leak-free load holding and controlled load lowering in hydraulic systems. Manufactured by HAWE Hydraulik, a globally recognized specialist in compact hydraulic components, the RH 3 V operates on a spring-loaded poppet principle: in the free-flow direction, hydraulic fluid passes the seat with minimal pressure loss, while in the reverse direction the poppet seals tightly against the seat to block flow. When a pilot pressure is applied to the integrated pilot piston, the poppet is mechanically lifted off its seat, permitting controlled reverse flow. This valve belongs to the family of flow control and modular valves and is typically used to prevent load creep or drift in actuator circuits, to hold suspended loads safely, and to enable controlled lowering when the directional valve is actuated. Its compact, robust design makes it suitable for both inline and manifold mounting in demanding industrial hydraulic power units and machine circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot-Operated Check Valve (Flow Control & Modular Valve) |
| Model Designation | RH 3 V |
| Manufacturer | HAWE Hydraulik |
| Operating Pressure | Standard Industrial Grade (up to rated bar, dependent on size and configuration) |
| Operating Principle | Spring-loaded poppet, pilot-piston release for reverse flow |
| Mounting & Connection | Standard ISO / Manufacturer Interface (inline or manifold cartridge style) |
| Sealing | Leak-free metal-to-metal poppet seat, optional soft-seal variants |
Engineering Features & Advantages
- Precision Performance: The spring-loaded poppet provides zero-leak sealing in the blocked direction, ensuring reliable load holding and preventing actuator drift in suspended-load applications.
- Pilot-Controlled Release: The integrated pilot piston enables smooth, controlled opening of the check valve when pilot pressure is applied, allowing precise load lowering and reverse flow regulation.
- Low Pressure Loss: Optimized flow passages in the free-flow direction minimize pressure drop, improving overall system efficiency and reducing heat generation.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust housing and wear-resistant poppet and seat geometry.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original HAWE OEM standards, ensuring drop-in replacement without circuit modification.
- Compact Modular Design: Suitable for inline installation or integration into modular manifold blocks, saving space in dense hydraulic power units.
Typical Industrial Applications
The HAWE RH 3 V pilot-operated check valve is widely deployed in heavy industrial scenarios where secure load holding and controlled motion are critical. Typical applications include plastic injection molding machines (mold clamping and ejector circuits), metallurgical presses and rolling mills (holding cylinders under load), construction and marine hydraulics (outrigger and crane load locking), and CNC machine tools (axis
PRODUCT IMAGES
HAWE RH 3 V Pilot-Operated Check Valve
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine HAWE RH 3 V Solenoid Directional Seat Valve. This German-made hydraulic component features a poppet-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
