High-Pressure Flat Face Hydraulic Quick Couplings

Product Specification

Feature

JINGYE Fittings offers JY-FF-HP High-Pressure Flat Face Hydraulic Quick Couplings for 700 bar-class hydraulic tools, power units and industrial service equipment. Male plugs and female sockets combine flat-face double shutoff with compact high-strength construction. Key Product Advantages: 1. Two Sizes and Four Model Codes The JY-FF-HP range includes 6.3 mm (1/4" class) JY-FF-HP-06-P and JY-FF-HP-06-S, plus 10 mm (3/8" class) JY-FF-HP-10-P and JY-FF-HP-10-S. P denotes male plug/nipple; S denotes female socket/coupler. Body interface and threaded connection sizes are specified separately for accurate OEM ordering. 2. 700 Bar-Class Hydraulic Design Published comparable high-pressure configurations operate at 70 MPa (700 bar / approximately 10,150 psi). The JY-FF-HP series targets this pressure class through suitable body strength, valve design, sealing and locking retention. Working-pressure qualification applies to each specific coupling assembly, rather than all variants automatically. 3. High-Pressure Flat Face Double Shutoff Both mating halves use flush-face shutoff valves that open when fully coupled and close during approved disconnection. Smooth mating faces facilitate cleaning and help reduce fluid spillage, trapped air and dirt entry. The flat-face design is useful when handling high-pressure oil circuits in maintenance and industrial environments. 4. Engineered Mechanical Locking The plug and socket use matched engagement profiles and mechanically secured retention to resist hydraulic separation forces. Critical design features include locking groove geometry, retainer strength, valve stroke and secure sleeve operation. High working pressure does not by itself confer connect-under-pressure or disconnect-under-pressure capability. 5. Size-Specific Flow and Pressure Drop Published reference data identify 12 L/min rated flow and 25 L/min maximum flow for 6.3 mm couplings, versus 23 L/min rated and 46 L/min maximum for 10 mm. Actual pressure drop depends on internal passages, valve opening, oil viscosity, temperature and flow direction. Selection balances hydraulic flow against pressure loss and coupling size. 6. Burst Strength, Impulse and Leakage Control Comparable 6.3 mm designs publish burst values of 200 MPa (male), 230 MPa (female) and 230 MPa (coupled); 10 mm references list 210, 210 and 220 MPa respectively. Reference disconnection spillage is 0.008 mL and 0.012 mL by size. These comparative values guide target specifications; production proof, burst, impulse and leakage testing determine the qualified JY-FF-HP performance. 7. High-Strength Steel and High-Pressure Seals Precision CNC-machined high-strength carbon steel bodies can use hardened valves, springs and retaining components with selective heat treatment. NBR or polyurethane sealing elements and PTFE or other suitable anti-extrusion backup rings support selected hydraulic-fluid and pressure requirements. Trivalent chromium zinc plating and enhanced coating options provide surface protection. 8. BSPP and NPT Hydraulic Port Options The 6.3 mm reference configuration includes G1/4 and 1/4 NPT ports. The 10 mm range includes G3/8, 3/8 NPT, G1/2 and 1/2 NPT. Port threads, sealing arrangement, body geometry and connection dimensions are selected for mating hoses, pumps, cylinders and tool connections. Matching pressure class does not establish cross-brand interchangeability. 9. CNC Precision and Quality Verification JINGYE Fittings operates under ISO 9001:2015 quality management. Inspection focuses on material identification, hardness, coupling profiles, locking engagement, valve stroke, threaded ports, seal seats, surface finish and coating thickness. Functional checks may cover internal/external leakage, connection cycles, flow-pressure drop, proof/burst pressure, impulse durability and retention strength. 10. OEM Customization and Second-Source Support JINGYE Fittings supports male and female halves, matching sets, BSPP/NPT port variants, seal compounds, coating choices, marking, dust protection and private-label packaging. Drawings and reference samples support dimensional comparison, prototype evaluation, mixed-SKU orders and OEM replacement programs for distributors and hydraulic tool manufacturers. 11. High-Pressure Tools and Industrial Applications Applications include hydraulic torque wrenches, bolt tensioners, jacks, synchronized lifting cylinders, cutters, spreaders, compact power packs, industrial test equipment, mining service tools and construction maintenance. JY-FF-HP addresses demand for compact, low-spillage quick disconnects in specialized high-pressure hydraulic circuits.