1" Flat-Face Hydraulic Quick Coupler (ISO 16028) - All Models | 250 Bar High Pressure

This series of 1" flat-face hydraulic quick couplers complies with ISO 16028 international standards, with a 250 bar high working pressure and ±230 L/min flow rate, adaptable to a wide temperature range of -25°C to +100°C. Adopting push-connect and ball housing retraction disconnect design for easy and efficient operation, all couplers feature trivalent zinc plated surface finish for superior corrosion resistance, matched with NBR (nitrile rubber) sealing rings and PTFE anti-extrusion rings to ensure leak-proof and stable performance under high pressure. Available in male, female (1" NPT/M30x2) and complete (dual-thread) models to meet all your industrial hydraulic system connection needs.

Specifications

• Working Pressure: 250 Bar

• Working Temperature: -25°C to +100°C

• Flow Rate: ±230 L/min

• Surface Finish: Trivalent Zinc Plated (corrosion & wear resistant)

• Sealing Material: NBR (Nitrile Rubber) - oil-resistant, excellent sealing

• Anti-Extrusion Ring: PTFE - prevents seal extrusion under high pressure

• Locking System: Polished Steel Balls (secure connection, anti-loosening)

• Compliance: ISO 16028 International Standard

  
  

• 5173 (Male | 1" NPT)

• 107.1 mm overall length with 1″–11.5 NPT male thread and 55 mm male wrench size; single male end design for direct connection to female hydraulic fittings, ideal for fixed hydraulic line male end connections.
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• 5174 (Female | 1" NPT)

• Compact 100.2 mm overall length with 1″–11.5 NPT female thread and 50 mm female wrench size; space-saving design, perfect for hydraulic equipment with limited installation space and 1" NPT thread requirements.
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• 5179 (Female | M30x2)

• 121.2 mm overall length with M30x2 female thread and 50 mm female wrench size; dedicated model for industrial hydraulic systems with M30x2 thread specifications, stable matching and no leakage.
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• 5175 (Complete | 1" NPT Male & Female)

• 185.5 mm overall length with dual 1″–11.5 NPT male/female threads, 55 mm male and 50 mm female wrench sizes; versatile dual-thread design, eliminates the need for additional adapters, suitable for flexible hydraulic line cross-connections.
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• Simple Operation Instructions

• Connection: Push the male coupler into the female coupler under pressure - automatic locking via polished steel balls for quick connection.

• Disconnection: Align the ball housing first, then retract the sleeve to release the lock - safe and easy disconnection without pressure relief.

• Premium Material Advantages

• Trivalent Zinc Plating: High-density surface coating, strong resistance to rust and industrial wear, extends product service life by 50%+.

  NBR Sealing: Excellent oil, solvent and aging resistance, adapts to all common hydraulic media (hydraulic oil, mineral oil, etc.).

  PTFE Anti-Extrusion Ring: High temperature and pressure resistance, prevents seal ring deformation/extrusion, ensures long-term sealing stability.

  Polished Steel Balls: High hardness and smooth surface, precise locking, no jamming during operation.

• Wide Application Scenarios

• Suitable for  industrial hydraulic systems, construction machinery, agricultural equipment, hydraulic power units, mining machinery, and industrial fluid transfer lines; ideal for quick connection/disconnection of hydraulic lines in high-pressure, high-flow working conditions.