ISO 7241-A Poppet Valve Hydraulic Quick Couplings

Product Specification

Feature

JINGYE Fittings supplies JY-ISOA ISO 7241-A Poppet Valve Hydraulic Quick Couplings for mobile and industrial hydraulic equipment. Male plugs and female sockets combine spring-loaded double shutoff, ball-locking connection and a standardized Series A mating profile. Key Product Advantages: 1. Five Sizes and Ten Male/Female Models The 1/4"–1" range includes JY-ISOA-02-P/S, JY-ISOA-03-P/S, JY-ISOA-04-P/S, JY-ISOA-06-P/S and JY-ISOA-08-P/S. P identifies the male plug/nipple and S the female socket/coupler. Body and port sizes are specified separately. 2. ISO 7241-1 Series A Interchangeability The Series A interface controls the male plug profile, engagement groove, female socket entry and locking engagement. Dimensional compatibility supports matching with ISO 7241-1 Series A counterparts. Series A differs from ISO 7241-B and ISO 16028; mating fit does not establish pressure ratings. 3. Spring-Loaded Poppet Double Shutoff Conical poppet valves in both halves open when fully coupled and close automatically during disconnection. Springs press the valves against their seats to retain hydraulic fluid in disconnected lines. Poppet couplings are not zero-spill flat-face connectors. 4. Secure Ball-Locking Sleeve Connection The female coupler uses radial steel locking balls, a sliding sleeve and return spring to engage the male nipple groove. Controlled sleeve travel, ball position, groove geometry and component hardness support reliable locking and repeated use. Standard versions require pressure relief; push-pull and CUP variants are separate. 5. Size-Specific Pressure Engineering Comparable ISO A commercial pressure references are 345 bar at 1/4", 276 bar at 3/8"–1/2", and 207 bar at 3/4"–1". Actual working pressure depends on size, materials, port, seals and mating half. Proof pressure, burst strength, impulse endurance and temperature suitability are assessed for the selected complete assembly, not inferred from the ISO interface alone. 6. Flow Performance and Hydraulic Ports Published reference flows for 1/4", 3/8", 1/2", 3/4" and 1" are approximately 11.4, 22.7, 45.4, 106 and 189.3 L/min, respectively. Pressure drop varies with poppet opening, internal bore, viscosity and flow direction. BSPP (G), NPT and specified metric or OEM ports can be selected independently of Series A body size. 7. Carbon Steel, Stainless Steel and Seal Choices CNC-machined carbon steel bodies and sleeves provide a practical industrial construction; stainless steel 304/316/316L and brass options suit selected applications. Hardened steel poppets and locking balls, steel or stainless springs, and NBR seals support hydraulic operation. FKM or EPDM seal options depend on fluid and temperature compatibility. Carbon steel may receive trivalent chromium zinc plating, 8–12 μm. 8. Precision Machining and Quality Verification JINGYE Fittings operates under ISO 9001:2015 quality management. Critical checks cover plug nose, locking groove, socket bore, sleeve movement, poppet stroke, valve seats, port threads, hardness, coating thickness and cleanliness. Agreed performance tests may include mating fit, internal/external leakage, pressure drop, proof/burst pressure, impulse cycles and repeated connection cycles. 9. Maintenance-Friendly Coupling Selection Individual male nipples, female couplers, matching sets and protective dust caps/plugs support hose replacement and equipment servicing. Clear identification of interface size, thread form, seal compound and mating half helps distributors and assembly shops reduce ordering errors. Conventional poppet construction offers a familiar connection method for field maintenance. 10. OEM Customization and Second-Source Supply Options include BSPP/NPT or designated port ends, coated steel or alternative body materials, seals, protective accessories, marking and private-label packaging. Drawings, physical samples and mating halves support dimensional comparison and alternate-source development. JINGYE Fittings supports mixed-SKU procurement, samples and repeat OEM orders. 11. Agricultural, Construction and Industrial Uses Applications include tractors, harvesters, loaders, excavators, detachable hydraulic hoses, auxiliary circuits, hydraulic power units, pumps, cylinders, test equipment, mining service machinery, forestry equipment, material handling and industrial MRO. The standardized Series A profile is useful to hydraulic hose assemblers, equipment builders and fluid-power distributors.