Sun Hydraulics Check Cartridge Valves

Reliable Flow Direction Control | Compact Screw-In Design | Zero Leakage Options

Sun Hydraulics’ Check Cartridge Valves are designed to allow free flow in one direction while blocking reverse flow, making them essential for maintaining unidirectional flow and preventing backflow in hydraulic circuits. These compact, screw-in valves provide a simple yet highly effective solution for circuit protection, actuator control, and hydraulic locking applications.

Available in a variety of flow capacities and pressure ratings, Sun’s check valves are manufactured to the highest standards for leak-tight sealing, low pressure drop, and long service life. Their ISO cavity compatibility ensures seamless integration into hydraulic manifolds and custom control blocks.

Key Features:

🔁 One-Way Flow Control: Allows free flow in one direction and blocks in the opposite direction

💧 Low Pressure Drop: Engineered for efficient, unrestricted flow

🧩 ISO Standard Cavities: Simplifies installation and interchangeability

🔒 Leak-Tight Options Available: Ensures complete hydraulic isolation where needed

🛠️ Durable and Compact Design: Built for reliability in mobile, marine, and industrial systems

📏 Various Sizes and Flow Ratings: Tailored for different circuit requirements

Typical Applications:

Actuator isolation and load holding

Preventing backflow in motor and cylinder circuits

Safety locking in lifting or hoisting systems

Directional flow control in mobile and industrial hydraulic equipment

Brake release circuits and pressure holding applications