| Params | Product Name: ISO 14541 Screw-to-Connect Hydraulic Quick Couplings Manufacturer: JINGYE Fittings (Ningbo Jingye Fluid Fittings Co., Ltd.) Series: JY-STC-14541; ISO 14541:2013 general-purpose hydraulic screw couplings. Construction: Threaded mechanical locking with male rotating sleeve, mating female thread and spring-loaded poppet shutoff. 1. Product Series and Nominal Sizes Published JINGYE series: JY-STC-14541. JINGYE coupling-set listings reference 1/4"–1-1/2" NPT/BSP port options. ISO 14541:2013 specifies coupling sizes 6.3, 10, 12.5 and 20 mm; commercial manufacturers may offer additional body sizes. Specify coupling body size, male/female half and hydraulic port independently. 2. ISO 14541 Interface and Mechanical Threads The ISO 14541:2013 mating interface defines the plug profile, axial dimensions, rotating sleeve and engagement thread. Standard interface threads by coupling size: 6.3 mm M24x2; 10 mm M28x2; 12.5 mm M36x2; 20 mm M42x2. These are screw-locking threads between coupling halves, NOT the BSPP/NPT hydraulic end ports. Thread tolerances follow the applicable ISO metric requirements. 3. Screw-to-Connect Locking Construction The rotating threaded sleeve on the male half engages the mating female thread and draws the coupling halves together. Round sleeves with wrench flats or hexagonal sleeves are possible. Relative rotation of the sleeve and connected halves limits hose twisting. Controlled engagement length, thread profile and alignment support mechanical retention in vibration and pressure-impulse service. 4. Poppet Valves and Double Shutoff Selected JY-STC-14541 poppet-style configurations use spring-loaded conical valves and elastomer sealing in both halves. Poppets open on full engagement and close on separation, retaining oil in isolated lines. Valve-seat finish, spring action, poppet travel and seal retention affect leakage. Poppet-valve couplings are distinct from flat-face non-spill and ISO 14540 high-pressure tool interfaces. 5. Standard Pressure and Burst Requirements ISO 14541:2013 carbon-steel performance table: DN6.3 maximum working pressure 350 bar; DN10 and DN12.5 300 bar; DN20 250 bar. Minimum burst pressure, both coupled and uncoupled: 1400, 1200, 1200 and 1000 bar respectively. These standard performance requirements apply to conforming carbon-steel designs; commercial products may offer different qualified ratings by size. 6. Rated Flow, Pressure Drop and Fluid Spillage ISO 14541:2013 DN6.3/10/12.5/20 rated flows: 12/23/45/106 L/min. Maximum pressure drop at rated flow: 2.5/2.0/1.5/2.2 bar. Rated surge flow: 36/69/135/318 L/min; maximum disconnect spillage: 0.8/1.4/2.7/9.3 mL. Actual pressure loss depends on viscosity, temperature and internal valve design. 7. Residual Pressure Connection and Impulse Endurance ISO 14541:2013 specifies connection capability with residual static pressure in one coupling half at 33% of maximum working pressure, with 100 connection cycles under that condition. The standard also specifies impulse verification under ISO 7241-2: 200,000 cycles uncoupled and 500,000 cycles coupled. These are defined qualification conditions, not permission to disconnect under pressure or connect with both halves fully pressurized. 8. Materials, Seals and Surface Protection Standard reference construction uses precision CNC-machined carbon steel, hardened poppet components, threaded sleeves and steel springs. NBR seals suit compatible mineral hydraulic oils; FKM or other compounds may be selected for defined fluids and temperatures. Carbon-steel finishes include trivalent chromium zinc plating, typically 8–12 μm, or enhanced corrosion protection. Alternative materials require corresponding performance qualification. 9. Dimensions, Testing and Quality Control Quality management: ISO 9001:2015. Inspect ISO mating dimensions, M-series screw threads, sleeve rotation, axial engagement, poppet seats, port threads, seals, plating and cleanliness. Functional verification includes leakage, proof/burst strength, flow/pressure drop, surge flow, spillage, impulse fatigue and residual-pressure connection cycling following the specified test conditions. 10. Applications and OEM Procurement Applications: excavator attachments, forestry equipment, agricultural machinery, mobile hydraulics, industrial power units, hose assemblies, hydraulic tools and heavy-duty machinery exposed to vibration or pressure impulses. OEM choices include BSPP/NPT ports, matched pairs, seal material, finish, markings and protective caps. JINGYE Fittings supports drawings, samples, dimensional matching, mixed-SKU procurement and second-source manufacturing. | Material | Body Materials: Precision CNC-machined carbon steel (C20/C45 options) for ISO 14541 male plugs, female sockets and screw-locking sleeves. Threaded Locking Parts: Steel rotating sleeves, mating metric locking threads (M24x2, M28x2, M36x2, M42x2), retainers and wear-resistant engagement surfaces. Poppet Valves: Hardened steel spring-loaded conical poppets and precision-finished seats for double shutoff. Springs: Spring steel or stainless steel valve-return and sleeve components. Seals: NBR (Buna-N) for compatible mineral hydraulic oils; optional FKM for selected fluids and higher temperatures, with PTFE backup rings where required. Surface Treatment: Trivalent chromium zinc plating, typically 8–12 μm; enhanced corrosion-resistant coatings optional. Manufacturing & Quality: Precision CNC turning, selective heat treatment, thread gauging, material traceability, dimensional inspection, coating checks and leakage testing. |
