Product Overview
The YUKEN CPDG-03-E-20-50 is a pilot operated check valve from YUKEN’s CPDG series, engineered for precise load-holding and controlled flow isolation in industrial hydraulic circuits. As a modular (sandwich) style valve, it mounts between a directional control valve and its subplate, allowing actuator lines to be locked against reverse flow until a pilot pressure signal is applied to release the check. This design prevents load drift, cylinder creep, and uncontrolled descent in vertical or gravity-loaded applications. The valve operates on a poppet-and-pilot-piston principle: a spring-biased poppet blocks reverse flow, while an integral pilot piston, actuated by pressure from the opposite line, mechanically lifts the poppet to permit controlled return flow. The CPDG-03-E-20-50 is a direct-fit modular component compatible with standard ISO 4401 / CETOP 3 (NG6) interfaces, making it a reliable choice for new system builds and OEM replacement alike.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Pilot Operated Check Valve (Modular / Sandwich Type) |
| Model Designation | CPDG-03-E-20-50 |
| Manufacturer | YUKEN |
| Nominal Size | 03 (NG6 / CETOP 3 / ISO 4401-03) |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per YUKEN CPDG series) |
| Pilot Ratio | Standard pilot-to-load ratio for reliable poppet release |
| Mounting & Connection | Modular sandwich mounting, ISO 4401-03 / CETOP 3 interface |
| Sealing | NBR / FKM O-ring seals (standard industrial hydraulic fluid compatibility) |
Engineering Features & Advantages
- Precision Load Holding: The spring-biased poppet provides zero-leak reverse flow blocking, preventing actuator drift and load descent in vertical or gravity-loaded circuits.
- Pilot-Controlled Release: An integral pilot piston responds to pressure from the opposing line, mechanically lifting the poppet for smooth, controlled return flow without external pilot lines.
- Modular Sandwich Construction: Mounts directly between the directional valve and subplate, eliminating additional piping and reducing installation complexity and 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 YUKEN CPDG series and standard ISO 4401-03 / CETOP 3 modular interfaces.
Typical Industrial Applications
The YUKEN CPDG-03-E-20-50 is
PRODUCT IMAGES
YUKEN CPDG-03-E-20-50 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.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- 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 YUKEN CPDG-03-E-20-50 Pilot Operated Pressure Reducing Valve. This Japan-made hydraulic component features a precise pressure reducing design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.