Sun Hydraulics Cartridge Valve | PRDP-MDN CKBB-XCN CKEV-XCN | Pilot Check & Reducing

Sun Hydraulics PRDP, PVJA & CK Series Cartridge Valves

Product Overview: Sun Hydraulics Cartridge Valves are globally recognized for their iconic “Floating Style” design. This unique construction allows internal components to self-center during installation, neutralizing stresses caused by manifold machining tolerances or excessive torque. This category features premier models for precision control: PRDP-MDN (Pilot-operated reducing/relieving), PVJA-8WN (Proportional throttle with manual adjustment), and the CKBB / CKEB / CKIB / CKEV series of pilot-to-open check valves.

Engineered for high-pressure, long-life, and severe-duty hydraulic integrated circuits, these screw-in cartridges are the premier choice for mobile cranes, aerial work platforms, injection molding machinery, and industrial Hydraulic Power Units (HPU).

Key Technical Advantages:

• Floating Cartridge Technology: The unique two-piece floating construction significantly reduces the risk of spool binding, enhancing operational reliability under high-pressure cycles.

• Precision Pressure Management: The PRDP series maintains an exceptionally stable secondary pressure for branch circuits, even amidst severe primary circuit fluctuations.

• Zero-Leakage Load Holding: The CK series pilot-to-open check valves feature precision-honed seats and poppets to ensure zero-drift locking for cylinders and actuators.

• Manual Handknob Adjustment (-8WN): The PVJA-8WN model includes an ergonomic handknob, allowing technicians to perform real-time field adjustments without additional tools.

Detailed Specifications & Parameters:

• Core Series: Sun Hydraulics Pilot-operated Relief & Check Cartridges.

• Featured Model Matrix: PRDP-MDN, PVJA-8WN, CKBB-XCN, CKEB-XCN, CKIB-XCN, CKEV-XCN.

• Core Performance Specs:

  • Max Operating Pressure: Rated for heavy-duty operations up to 350 Bar (5,000 PSI).

  • Functional Logic: Reducing/Relieving (PRDP), Proportional Throttling (PVJA), Pilot-to-open Check (CK Series).

  • Adjustment Options: M (Stainless steel screw), 8 (Manual Handknob), X (Non-adjustable).

  • Cavity Standards: Industry-standard cavities such as T-11A, T-2A, T-17A, and T-19A.