| Params | Product Name: Wing Nut Hydraulic Quick Couplings Manufacturer: JINGYE Fittings (Ningbo Jingye Fluid Fittings Co., Ltd.) Series: JY-STC-WN; heavy-duty wet-line wing-nut threaded quick coupling. Configuration: Male nipple and female wing-nut socket with screw locking, spring-loaded poppet shutoff and high-flow hydraulic passages. 1. Series and Nominal Sizes Published JINGYE series: JY-STC-WN. Coupling-set range: 3/4", 1", 1-1/4" and 1-1/2" body/port classes (approximately DN19-DN38). JINGYE set references: JY-WING-12-SET, JY-WING-16-SET, JY-WING-20-SET and JY-WING-24-SET. Specify plug, socket, matched set, body size and hydraulic port independently. 2. Wing-Nut Screw-to-Connect Locking A broad winged coupling sleeve engages coarse screw-locking threads to draw male and female halves together. Hand-operated wings provide mechanical leverage for coupling in mobile wet-line service. Control thread profile, engagement length, axial travel, sleeve retention and full shoulder seating. The wing-nut locking thread is separate from NPT/BSPP hydraulic end threads. 3. Wet-Line Interface and Replacement Matching Wing-nut wet-line profiles are commonly cross-referenced to Parker 6100, Eaton Aeroquip 5100, Faster FB, Dixon W and Stucchi W families. Interchange depends on precise mating profile, body class, thread design, valve stroke and pressure rating. Verify male and female samples before cross-brand replacement; wing-nut appearance alone does not establish compatibility. 4. Poppet Valves and Double Shutoff Spring-loaded poppet valves in the nipple and socket close when uncoupled and open as the wing nut draws the halves fully together. Valve seats, elastomer seals and return springs help retain fluid in separated hoses. Conventional poppet wet-line couplings may have oil spillage and air inclusion; they are different from ISO 16028 flat-face designs. 5. Body Materials and Corrosion Protection JINGYE describes high-strength carbon-steel body components and a cast-brass wing sleeve, with trivalent chromium zinc or zinc-nickel coated steel. International wet-line W-series references also use brass coupler/nipple bodies paired with a cast-steel wing; materials vary by design and must not be combined as one fixed construction. NBR seals and PTFE backup rings support compatible hydraulic oil service; FKM is an option. 6. Working Pressure, Burst Strength and Residual Pressure JINGYE published size table: 3/4" and 1" 210 bar; 1-1/4" and 1-1/2" 200 bar maximum working pressure. Comparable Stucchi W references list 207 bar at 3/4" and 1", 190 bar at 1-1/4" and 172 bar at 1-1/2", with burst pressures 620/620/569/517 bar respectively. The JINGYE page describes up to 200 bar trapped-pressure engagement; verify residual connection conditions separately from normal working pressure. 7. Rated Flow and Hydraulic Pressure Drop JINGYE published reference flows by size: 3/4" 135 L/min, 1" 225 L/min, 1-1/4" 340 L/min and 1-1/2" 450+ L/min. Comparable Stucchi W-series flow references at a 50 psi pressure drop are 35/55/80/110 US gpm (approximately 132/208/303/416 L/min). Pressure drop depends on size, valve opening, oil viscosity and test conditions; distinguish rated from maximum flow. 8. Hydraulic Ports, Seals and Temperature Published JINGYE choices: female NPT and BSPP (G) ports, with selected four-bolt flange options. Standard sealing: NBR nitrile with PTFE anti-extrusion backup; FKM alternatives for suitable fluid and temperature. JINGYE lists -25°C to +100°C for NBR and up to +180°C for selected FKM construction. Thread specifications, material compatibility and temperature limits are assembly-dependent. 9. Dimensional Inspection and Functional Testing Quality management: ISO 9001:2015. Inspect wing casting, coarse locking threads, port gauges, nipple profile, valve stroke, mating shoulder, spring action, seal grooves, coating thickness and internal cleanliness. Test scope includes mating fit, internal/external leakage, rated flow/pressure drop, hydrostatic proof, burst and repeated coupling cycles. Validate engagement torque or hand force at stated residual pressure for the exact paired design. 10. Applications and OEM Procurement Applications: dump trucks, tipping trailers, live-bottom wet-line systems, mobile drilling rigs, oilfield service trucks, sand/salt spreaders, hydraulic power packs and hose assembly manufacturing. OEM choices include plug-only, socket-only, matched sets, NPT/BSPP/flange ends, wing materials, seals, coatings, dust caps, marking and private labels. JINGYE Fittings supports mating-sample comparison, mixed-SKU procurement, customization and second-source sourcing. | Material | Body Materials: Precision CNC-machined carbon steel (C20/C45 options) for JY-STC-WN male nipples, female sockets and hydraulic flow passages. Wing Nut Components: Cast brass wing sleeves with coarse locking threads; steel or brass retainers and engagement parts by design. Poppet Valves: Hardened steel spring-loaded conical poppets and precision-finished valve seats for double shutoff. Springs: Spring steel or stainless steel valve-return components. Seals: NBR (Buna-N) O-rings for compatible hydraulic oils; PTFE anti-extrusion backup rings and optional FKM seals for selected service conditions. Surface Treatment: Trivalent chromium zinc plating, typically 8–12 μm, on carbon steel; optional zinc-nickel corrosion protection. Manufacturing & Quality: Precision CNC turning, selective heat treatment, wing-nut thread inspection, material verification, dimensional checks, leakage testing and batch traceability. |
