Hydraulic Valve

This series of hydraulic valves are core control components of hydraulic transmission systems. By preciselgulating the direction, pressure, and flow rate of the liquid, they enable the start-up, reversing, braking, and speed control of actuators. Adopting a modular design, products are compatible with both fixed-displacement pump and variable-displacement pump systems. Featuring a compact structure, quick response, and reliable sealing, they are widely used in construction machinery, agriculturl machinery, marine equipment, material handling machinery, and other fields, meeting precise control requirements under various heavy-duty operating conditions.

Product Classification and Core Features Valve

Type Cre Function Key Features Directional Control Valve Controls fluid flow on/off and direction Supports manual, hydraulic, and electro-magnetic control modes; horizontal installation design with hor axis layout improves stability; excellent sealing performance in both directions with no leakage risk Pressure Control Valve Regulates system pressure and protects component safety Rated pressur up to 250-300 bar, overload protection response time <0.1s; integrated overflow unloading function for significant energy saving Flow Control Valve Precisely distributes flow and rtes actuator speed Adopts LUDV flow distribution technology, independent of load pressure; flow range 10-120L/min, repeatability nifold Valve Coordinated control of multiple actuators Stackable structure, up to 8 sections per side, total up to 16 sections; built-in load holding va and make-up function for complex operating conditions

1. Basic Parameters Nominal Diameter: 6-32mm Rated Pressure: Pside 250 bar, Actuator side 300 bar Rated Flow: Inlet port max 120L/min, Working port max 70L/min Prol Pressure: 6-25 bar (Minimum control pressure 3 bar) Working Medium: Mineral oil (HL/HLP, conforming to DIN51524), Synttic grease (HEES, conforming to VDMA24569) Medium Temperature Range: -20℃~80℃ ViscosityRange: 10-380mm²/s (Optimal working viscosity 41mm²/s at 50℃) Cleanliness Requirement: ISO440 Class 20/18/16 (Recommended filter with β10≥75) 2. Installation Connection Parameters Connection Method: Threaded connection / Plate connection (Conformng to GB/T 3766-2001 standard) Installation Position: Any direction (Horizontal installation recommended for directional control valves) Pipe Joint Torque: /T port 50-70Nm, Control oil port 20Nm Installation Base Rigidity Requirement: Vibration acceleration ≤5m/s², ensure coaxiality ror <0.1mm

1. Pre-installation Preparation Component Inspection: Do not disassemble without authorization; if cleaning is required, folow GB/T 7935-2005 standard to ensure no residue remains Piping Requirements: Inlet piping should be short and straight, avoiding sudden cross-sectional changes; high-pressu recommended to use flexible compensating joints and high-pressure hoses to reduce vibration impact Instrument Calibration: Pressure gauges, level gauges, and other control instruments must be calibrated ice to ensure accurate readings 2. Installation Operation Key Points Strictly distinguish between inlet port (P), return port (T), and working ports (A/B); reverse installation isibited; idle ports must be sealed with dedicated plugs Connection screws must meet the manufacturer's specified performance grade; tightening torque must be uniform to avoid stress concentration Seal material must be comble with the working medium; ensure sealing surfaces are clean and undamaged during installation to prevent air ingr

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