Huade Hydraulic Control Check Valve | Y2EH-Hd20 | A1Y-Hb20b | Y2D1H-Ha10B

Y2EH / A1Y / Y2D1H Series Hydraulic Control Check Valves

Product Overview:

This series of Hydraulic Control Check Valves (Pilot-operated Check Valves) is a critical component for achieving reliable actuator locking and load retention in hydraulic systems. These valves allow free flow in one direction and enable controlled reverse flow by applying pilot pressure. Whether utilized in the pressure-holding circuits of heavy-duty presses or anti-drift protection for mobile machinery, the Y2EH-Hd20 and A1Y-Hb20b ensure “zero-leakage” locking of systems in a static state through their superior sealing and high-pressure capabilities.

Featured models include: Y2EH-Hd20, HY-HA20, Y2D1H-Ha10B, and A1Y-Hb20b.

Key Technical Advantages:

• Superior Sealing Reliability: Features hardened steel poppets and precision-ground seats to ensure full-integrity load holding even under extreme back-pressure.

• Versatile Nominal Sizes: Available in NG10 (Size 10) and NG20 (Size 20), catering to a wide range of flow requirements from medium to high-capacity circuits.

• Stable Pilot Modulation: Optimized pilot ratios ensure smooth, shock-free opening performance even under high-load conditions.

• Rugged Subplate Mounting: Compliant with international mounting interfaces for easy integration into manifold blocks, reducing overall maintenance costs.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • Y2EH-Hd20 / HY-HA20: Size NG20, engineered for high-flow applications with exceptional structural integrity.

  • Y2D1H-Ha10B: Size NG10, featuring specific pilot control characteristics (B-range) for precision locking.

  • A1Y-Hb20b: Pilot-to-open check valve, optimized for heavy-duty load retention.

• Core Technical Specs:

  • Max Operating Pressure: Rated up to 315 Bar (31.5 MPa).

  • Flow Capacity: Covers from 80 L/min (NG10) to 200 L/min (NG20).

  • Cracking Pressure: Standard options ranging from $0.5\text{ Bar}$ up to $5\text{ Bar}$.

  • Pilot Ratio: Typically 1:3 or 1:4, ensuring reliable decompression and opening.