Product Overview
The Wandfluh AH4260a/r is a hydraulically operated directional spool valve engineered by Wandfluh AG, a globally recognized Swiss manufacturer of high-precision hydraulic components. This 4-way directional control valve utilizes hydraulic pilot pressure to shift a precision-ground spool within a hardened steel housing, directing flow between ports to control the start, stop, and direction of actuators such as cylinders and hydraulic motors. The “a” designation indicates a spring-centered spool return, while the “r” suffix denotes the specific spool type and flow configuration. Designed for demanding industrial circuits, the AH4260a/r provides reliable, leak-resistant switching performance in high-pressure hydraulic systems where remote or pilot-operated actuation is required.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulically Operated Directional Spool Valve (4/3-way, spring-centered) |
| Model Designation | AH4260a/r |
| Actuation Type | Hydraulic pilot pressure, spring return to center position |
| Operating Pressure | Up to 350 bar (standard industrial grade, dependent on spool type) |
| Nominal Flow Rate | Up to 60 L/min (NG6 / CETOP 3 interface) |
| Mounting & Connection | Subplate mounting, ISO 4401 / CETOP 3 / NG6 interface |
| Spool Configuration | 4-way, 3-position, closed-center or tandem variants per “r” spool code |
| Pilot Pressure Range | Typically 10–40 bar (minimum pilot pressure required for reliable spool shift) |
Engineering Features & Advantages
- Precision Spool Metering: The hardened, precision-ground spool and matched bore deliver accurate flow metering, minimal internal leakage, and consistent response across the full pressure range, ensuring repeatable actuator control.
- Hydraulic Pilot Actuation: Enables remote operation and integration into pilot-controlled circuits, eliminating the need for electrical solenoids in hazardous or wash-down environments.
- Spring-Centered Fail-Safe: The “a” spring return automatically repositions the spool to the neutral center condition upon loss of pilot pressure, providing a predictable and safe system state.
- Industrial Reliability: Constructed with a robust cast housing and wear-resistant spool/bore pairing, built for continuous operation under severe industrial conditions and high cycle rates.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Wandfluh AH4260 series valves and standard CETOP 3 subplate interfaces for drop-in service.
Typical Industrial Applications
The Wandfluh AH4260a/r is suited for a wide range of heavy industrial hydraulic circuits, including plastic injection molding machines, metallurgical presses and rolling mills, construction and marine hydraulic systems
PRODUCT IMAGES
Wandfluh AH4260a/r Hydraulically Operated Directional Spool 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 WANDFLUH AH4260a/r Solenoid Directional Valve. This Switzerland-made 24V DC hydraulic component features a 4/3-way spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.