Double Shut-Off High Pressure Hydraulic Quick Coupling

The LSQ-TE series heavy-duty hydraulic quick coupling is specifically designed to handle high-pressure fluid systems with double shut-off safety requirements. Built from robust carbon steel and finished with a yellow zinc dichromate plating for exceptional rust resistance, this coupler features spring-loaded poppet valves in both the socket and the plug. Upon disconnection, both valves close instantly to prevent fluid spillage and protect systemic pressure. Its proven ball-lock mechanism ensures fast, dependable push-to-connect operation under rugged industrial environments.

Technical Specifications

• Series Designation: LSQ-TE Product Series

• Valving Architecture: Double Shut-Off Precision Poppet Valves

• Structural Material: High-Strength Carbon Steel

• Surface Protection: Yellow Zinc Plating (Zinc Dichromate Coating)

• Locking Component: High-grade hardened steel locking balls

• Connection Interface: Quick disconnect sleeve-retraction operational design

• Thread Geometry: Precision-machined Female and Male NPT / BSP threads

• Pressure Classification: Engineered for high-pressure industrial hydraulic systems

• Sealing Element: High-performance Nitrile (NBR) elastomer seals

• Extrusion Resistance: Built-in premium PTFE back-up rings for high-pressure stability

• Fluid Accommodation: Compatible with mineral-based hydraulic oils, fluids, and lubricants

• Leakage Performance: Bubble-tight closure on disconnection to eliminate environmental oil loss

• Flow Geometry: Streamlined internal valve design to maximize flow rate and minimize pressure drop

• End Configuration: Solid hexagonal flat faces for reliable wrench tightening during installation

• Fatigue Performance: Designed to withstand heavy pressure impulses and mechanical vibrations

• Temperature Stability: Reliable operation across wide standard industrial thermal ranges

• Dust Mitigation: Designed to accommodate protective rubber or metal dust caps and plugs

• Interchange Criteria: Conforms to standard industrial profiles for high-pressure valved series

• Sleeve Design: Knurled sleeve surface ensures firm manual grip during greasy field operations

• Quality Verification: 100% factory pressure and functional integrity tested before shipment