ISO 7241-B Poppet Valve Hydraulic Quick Couplings

Product Specification

Feature

JINGYE Fittings supplies JY-ISOB ISO 7241-B Poppet Valve Hydraulic Quick Couplings for industrial fluid-power systems. Carbon steel male plugs and female sockets combine a Series B mating interface, spring-loaded double-shutoff poppets and a ball-locking sleeve. Key Product Advantages: 1. JY-ISOB Series and Practical Size Selection JY-ISOB identifies the carbon steel ISO 7241-B poppet-valve family. Common reference body sizes include 1/8" (5 mm), 1/4" (6.3 mm), 3/8" (10 mm), 1/2" (12.5 mm), 3/4" (20 mm) and 1" (25 mm). Selected industry ranges extend to larger sizes. Specify male plug or female socket, ISO body size and port thread separately when ordering. 2. ISO 7241-1 Series B Interchangeability The Series B mating profile defines critical plug-nose, socket-entry, locking-groove and seal-engagement features. Dimensional matching enables connection with compatible ISO 7241-1 Series B counterparts. Series B is not directly interchangeable with ISO 7241-A or ISO 16028 flat-face interfaces; mating fit alone does not establish identical pressure or flow ratings. 3. Spring-Loaded Poppet Double Shutoff Precision-machined conical poppet valves in the plug and socket open upon complete engagement and close when disconnected. Valve springs and finished seats support shutoff in both separated halves, reducing fluid loss from isolated lines. Conventional poppet-valve designs can produce some disconnection spillage and are distinct from flat-face low-spill couplings. 4. Secure Ball-Locking Sleeve Mechanism Hardened locking balls in the female socket engage the male plug groove; a spring-loaded sliding sleeve retains the connection. Controlled sleeve stroke, ball engagement, groove dimensions and poppet travel support consistent operation. Standard Series B assemblies are connected and disconnected after pressure relief; residual-pressure connection requires a dedicated CUP mechanism. 5. Engineered Working Pressure and Strength Comparable carbon steel Series B ranges publish size-dependent working pressures around 207-345 bar for common 1/8"-1" configurations. Alternative commercial designs use different pressure ratings. Working pressure, proof pressure, burst strength and impulse life must be evaluated separately. Published industry figures serve as selection references rather than universal JY-ISOB guarantees. 6. Hydraulic Flow and Pressure-Drop Performance Comparable 1/8"-1" carbon steel Series B references list rated flows from about 3.8 to 189 L/min, depending on body size. A 12.5 mm comparable design lists 45 L/min rated flow, 90 L/min maximum flow and 2.7 mL disconnection spillage. Internal valve geometry, viscosity, temperature and flow determine pressure drop; maximum flow is not a continuous-duty rating. 7. Carbon Steel Construction and Hardened Parts Precision CNC-machined carbon steel bodies and sleeves are paired with hardened steel poppets, locking balls, valve seats and retaining components. Spring steel or stainless steel return springs provide valve and sleeve action. Controlled machining, selective heat treatment and component inspection support dimensional consistency, engagement and valve sealing. 8. Seals, Threads and Corrosion Protection NBR (Buna-N) is the standard sealing choice for compatible mineral hydraulic oils, with FKM and EPDM options for selected fluids and temperatures. BSPP (G) and NPT ports are common; metric and SAE ORB ends can be engineered for selected designs. Carbon steel components can receive trivalent chromium zinc plating, typically 8-12 μm, with enhanced corrosion-resistant finishes available. 9. Manufacturing Inspection and Functional Testing JINGYE Fittings operates under ISO 9001:2015 quality management. Critical controls include mating dimensions, groove and locking-ball fit, threaded ends, poppet stroke, seat finish, springs, seals, coating thickness and internal cleanliness. Agreed verification may cover fit, leakage, flow/pressure drop, proof and burst strength, pressure impulse and repeated coupling cycles. 10. OEM Customization and Second-Source Procurement Available engineering choices include plug-only, socket-only or matched sets, different port threads, seal compounds, dust caps, marking and private-label packaging. Drawings and mating samples support dimensional comparison with existing Series B couplings. JINGYE Fittings supports sample evaluation, mixed-SKU procurement, custom machining, production replenishment and alternative-source development. 11. Wide Industrial Hydraulic Applications Designed for hydraulic hose assemblies, power units, pumps, cylinders, presses, manufacturing machinery, construction equipment, agricultural hydraulics, mining and forestry service, and industrial maintenance. The double-shutoff Series B format suits systems requiring detachable hydraulic lines and replacement couplers within the specified operating conditions.