JGH ZCT-03-B-10 Hydraulic Deceleration Valve | ZCT-03 ZCG-03 | Cam-Operated Check Valve

LIC Hydraulic’s JGH ZCT-03-B-10 Series Cam-Operated Deceleration Check Valves are precision-engineered components designed to control the deceleration of hydraulic actuators effectively. Used extensively in grinding machines and automated production lines, the ZCT and ZCG series ensure smooth transitions from high-speed travel to controlled feed rates. We guarantee 100% Drop-in Interchangeability with original JGH and other industry-standard specifications. Every valve undergoes 100% simulated load testing to ensure exceptional repeatability, zero-leakage performance, and vibration-free deceleration under peak operational pressures.

Technical Specifications

• Series Identification: ZCT (Deceleration Valve) / ZCG (Deceleration Check Valve)

• Target Model: ZCT-03-B-10 / ZCG-03-B-10

• Nominal Size: 03 (3/8″ or NG10)

• Max Operating Pressure: 21 MPa (210 bar / 3045 PSI)

• Max Flow Rate: 30 L/min to 40 L/min

• Actuation Method: Mechanical Cam/Roller Operation

• Max Back Pressure: 14 MPa (140 bar)

• Mounting Type: Sub-plate Mounting

• Adjustment Control: Precision manual knob for fine-tuning the throttled flow area

Key Technical Advantages

• Precision Cam-Operated Metering: Featuring a high-hardness roller bearing and a micro-ground spool, the valve provides seamless deceleration of hydraulic cylinders without hydraulic shock or vibration during speed transitions.

• Integrated Reverse Free Flow (ZCG): The built-in high-performance check valve allows fluid to bypass the throttle during reverse flow, enabling rapid retraction of the actuator for improved cycle times.

• Enhanced Dynamic Sealing: Utilizing premium U-cup seals combined with a dust-proof ring, the valve stem maintains a zero-leakage interface even under high-frequency actuation cycles.

• Universal Compatibility: Designed to standard sub-plate mounting patterns, these valves are direct replacements for major brands like Yuken or Northman, significantly reducing OEM maintenance costs.

Application Areas

• Machine Tools: Table reversal deceleration in grinders and fast-to-slow feed control in modular drilling machines.

• Automation Lines: Buffer control at the end of travel for heavy-duty transfer units.

• Woodworking Machinery: Limit protection and speed control for presses and cutting equipment.

Expert Maintenance Tips

• Cam Stroke Calibration: Ensure the cam depression depth does not exceed the valve stem’s maximum mechanical stroke (typically 10mm). Excessive force may cause permanent internal damage.

• Fluid Cleanliness: Maintain system filtration at 20μm or better. Because the throttling gap is extremely small, fine particulates can cause speed fluctuations or spool sticking.

• Roller Lubrication: While the valve is hydraulic, the external roller and cam contact surface should be lubricated regularly with extreme-pressure grease to prevent mechanical wear and ensure sensitivity.