Purchase now: Winner CV-08W-21-Y-Z-2 Valve
Purchase now: Atlantech Drives provides you the Winner Hydraulics CV-08W-21-Y-Z-2. This is a robust Direct Acting Check Valve designed for critical load-holding and circuit isolation tasks. The «21» pressure code implies a specific bias spring setting, distinct from the ’20’ or ‘2A’ models, likely offering a Standard Cracking Pressure (e.g., 1.0 Bar / 15 PSI) suitable for general bypass or suction applications where a balance between flow restriction and valve responsiveness is required.
Technical Specifications and Application
This cartridge installs into a Size 08 (2-Way) cavity. It is widely used in hydraulic power units (HPUs) to prevent pump backspin when the electric motor shuts off, or to isolate different branches of a circuit (e.g., High/Low pressure pump circuits). The valve body features a Zinc surface treatment («Z») for extended environmental protection. Its guided poppet design minimizes turbulence and noise (chatter) even at high flow velocities, ensuring smooth system operation.
- Part Number: CV-08W-21-Y-Z-2.
- Type: Non-return Valve.
- Cavity: C-08-2.
- Cracking Pressure: Type 21 (Standard).
- Max Flow: 30 LPM (nominal).
- Pressure Rating: 350 Bar.
- Finish: Zinc Plated («Z»).
- Connection: Cartridge (UNF Thread).
Expert Tips: Troubleshooting Drift
Cylinder dropping? Expert Tip: If your hydraulic cylinder drifts down slowly over time, the check valve is the first suspect. Remove the CV-08W-21-Y-Z-2 and inspect the «nose» (the poppet seating area). If you see a bright ring around the seat, it’s good. If you see scratches or erosion lines, the valve is bypassing. Replace it immediately—check valves are consumable items in high-cycle machinery.
Frequently Asked Questions (FAQs)
Q: Can I adjust the pressure on this valve?
A: No. Unlike Relief Valves, Check Valves like the CV-08W have a Fixed cracking pressure determined by the internal spring. You cannot adjust it; you must change the cartridge if a different pressure is needed.
Q: Is it compatible with Parker/Sun cavities?
A: It fits the industry standard «Common Cavity» (Size 08). It is generally interchangeable with HydraForce or Parker common cavity cartridges, but verify the thread pitch (3/4-16 UNF) before installation.
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