ISO 7241-B Hydraulic Quick Coupling

The ISO 7241-B series (LSQ-S2 configuration) hydraulic quick coupling is a globally standardized, double shut-off fluid connector engineered for robust performance across diverse industrial and manufacturing oil lines. Constructed from premium-grade carbon steel and protected by an anti-corrosion yellow zinc plating, it incorporates spring-loaded poppet valves in both the socket and the plug halves. This defensive layout provides automatic and instantaneous shut-off when disconnected, successfully sealing the media and eliminating system pressure loss. Its durable ball-locking sleeve mechanism enables reliable push-to-connect field operations under demanding medium-to-high pressure industrial workflows.

Technical Specifications

• Standard Conformance: Compliant with ISO 7241-B international specifications

• Product Series: LSQ-S2 Product Series

• Valving Arrangement: Double Shut-Off Automatic Poppet Valve System

• Structural Material: High-Strength Tough Carbon Steel

• Plating Treatment: Yellow Zinc Plating (Zinc Dichromate Coating) for superior rust resistance

• Locking Device: Hardened steel locking balls for secure sleeve retention

• Connection Interface: Quick disconnect pull-back sleeve operation

• Thread Port Formats: High-precision Female NPT / BSPP / BSPT threads (1/2" BSP depicted)

• Body Size Availability: Available from 1/8 inch up to 1 inch

• Primary O-Ring Seal: High-grade Nitrile (NBR) rubber elastomer

• Extrusion Protection: Heavy-duty PTFE backup ring to handle shifting stress

• Fluid Accommodation: Recommended for mineral-based hydraulic oils, liquids, and select gases

• Leakage Integrity: Tight poppet closure guarantees zero-drop performance on decoupling

• Internal Geometry: Streamlined valve paths optimize flow rate and lower backpressure

• Wrench Drive Profile: Integrated robust hex flats for straightforward wrench tightening

• Fatigue Performance: Rated to comfortably withstand standard industrial pressure impulses

• Thermal Capabilities: Continuous operational efficiency across wide standard industrial temperature ranges

• Sleeve Grip Surface: Patterned knurling ensures firm handling during greasy field service

• Dust Cap Integration: Readily compatible with protective metal or rubber dust plugs and caps

• Interchange Equivalency: Fully interchangeable with all standard ISO B series quick couplers

• Assembly Alignment: Precision machining keeps plug and socket aligned during high-stress vibration

• Quality Verification: 100% factory hydrostatic proof and dimensional adherence inspected