70MPa Hydraulic Jack Quick Coupling

The LKJM series high-pressure hydraulic quick coupling is specifically engineered for severe 70MPa (700 Bar) operational setups involving hydraulic jacks, portable cylinders, and lifting tools. Manufactured from high-tensile carbon steel and zinc-plated for exceptional ruggedness, it incorporates a spring-loaded sealing valve that triggers an instantaneous cut-off during disconnection to protect systemic fluid pressure. The precision-machined male thread layout allows seamless mounting directly onto heavy-duty high-pressure pump lines and tool manifolds, ensuring reliable, bubble-tight connection cycles under intense stress conditions.

Technical Specifications

• Product Series: LKJM Series Configuration

• Nominal Working Pressure: Rated securely for operations up to 70MPa / 700 Bar

• Primary Body Material: Hardened High-Strength Carbon Steel

• Surface Coating: Chrome-free bright zinc plating for superior rust resistance

• Valve Design: Precision-engineered automatic shut-off poppet mechanism

• Target Application: Single or double-acting hydraulic jacks, cylinders, and portable tools

• Locking Mechanism: Robust multi-ball locking array for uniform load distribution

• Connection System: Quick pull-back sleeve engagement profile

• Port Configuration: Precision-machined male thread profile with integrated hex nut

• Thread Standard Options: 3/8 inch NPT, BSP, or metric high-pressure threads

• Primary Sealing Compound: Heavy-duty Nitrile (NBR) formulation

• Backup Protection Ring: High-density PTFE anti-extrusion ring system

• Fluid Accommodation: Tailored for mineral-base high-pressure hydraulic oils and lubricants

• Leakage Performance: Critical zero-drop bubble-tight interface on disconnection

• Flow Optimization: Streamlined internal orifice layout lowers turbulence and fluid restriction

• Wrench Assembly Flat: Solid hexagonal outer section for straightforward wrench torqueing

• Fatigue Defiance: Rated to safely endure high cyclic pressure impulses

• Operational Temperature Range: Efficient function from -20 to +100 degrees Celsius

• Sleeve Finish: Diamond-pattern knurled sleeve for oily hand operation

• Dust Prevention Compatibility: Fits standard heavy-duty threaded or flexible protective dust caps

• Inspection Protocol: 100% factory hydrostatic proof tested for high-pressure structural integrity