| Params | Product Name: Stainless Steel ISO 7241-B Hydraulic Quick Couplings
Manufacturer: JINGYE Fittings (Ningbo Jingye Fluid Fittings Co., Ltd.)
Series: JY-ISOB-SS; stainless steel male plugs and female sockets.
Configuration: ISO 7241-1 Series B double-shutoff poppet couplings with ball locking and a sliding sleeve.
1. Series Identification and Nominal Sizes
JINGYE Series: JY-ISOB-SS. Common stainless steel body sizes: 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). Extended SS304 industry ranges include 1-1/4", 1-1/2" and 2". Specify male plug or female socket, body size, material grade and port thread separately.
2. ISO Interface and Interchangeability
Standard: ISO 7241-1 Series B mating profile. Key features include male plug nose, locking groove, female socket entry, locking-ball engagement and sealing geometry. Series B differs from ISO 7241-A and ISO 16028. Interface fit is assessed with a matching Series B half; ratings depend on construction and seals.
3. Stainless Steel Grades and Production
Body options: AISI 304, 316 and 316L stainless steel, selected by environment and fluid. SS316 contains molybdenum for improved resistance in many corrosive conditions; SS316L has lower carbon content. CNC turning and precision finishing control valve seats, mating features and threads. Wetted internal parts and hardware are selected with the body material and fluid.
4. Poppet Valves and Double Shutoff
Male and female halves incorporate spring-loaded conical poppet valves. Valves open after full engagement and close when separated to retain liquid in both disconnected lines. Precision valve seats and suitable elastomer seals control internal and external leakage. Conventional poppet connections may spill fluid during uncoupling and are not flat-face non-spill designs.
5. Ball Locking and Operating Mechanism
The socket uses radial retaining balls and a sliding sleeve to capture the male plug groove. Engagement length, groove profile, sleeve stroke, spring return and ball retention are controlled for repeatable assembly. Standard connections require pressure relief before coupling or uncoupling; CUP functionality is a separate design.
6. Pressure, Flow and Fluid Performance
SS316 comparable-series working-pressure references for 1/8", 1/4", 3/8", 1/2", 3/4" and 1" are approximately 138, 138, 103, 103, 69 and 138 bar, respectively. Corresponding rated-flow references: 1, 3, 6, 12, 28 and 50 US gpm (about 3.8–189 L/min). A separate SS316L commercial series publishes up to 250 bar and 200 L/min. Pressure drop, proof/burst limits and impulse durability are design- and size-specific.
7. Hydraulic Ports, Seals and Temperature
Common female-thread ports: BSPP (G) and NPT, with SAE ORB or drawing-based alternatives for selected constructions. FKM (fluorocarbon) is commonly used in stainless ISO B couplings; NBR suits compatible mineral hydraulic oils, while EPDM may suit selected water-based fluids. Published FKM-series temperature references include -15°C to +180°C, depending on complete design and medium. Port and coupling body size are ordered independently.
8. Dimensions, Finish and Quality Testing
Quality Management: ISO 9001:2015. Control plug nose diameter, groove depth, socket OD/length, connected length, thread gauges, poppet stroke, valve seat finish, locking-ball engagement and bore cleanliness. Stainless steel surface options include cleaning and passivation. Inspection covers material identification, traceability, seal installation and surface condition. Functional testing may include leakage, pressure drop, proof/burst, pressure impulse and connection cycles.
9. Industrial and Corrosive-Service Applications
Industrial hydraulic power units, hydraulic hose assemblies, water and wastewater treatment, selected chemical processing, pumps, filtration, manufacturing equipment, coastal machinery, cleaning equipment, material handling and industrial MRO. Material and seal combinations are selected for the conveyed fluid and exposure environment.
10. OEM Engineering and Procurement
Options: male plugs, female sockets, matching sets, SS304/316/316L, BSPP/NPT/ORB ports, NBR/FKM/EPDM seals, passivation, protective caps, marking and private-label packaging. RFQ details: Series B size, port thread, material grade, fluid, temperature, working pressure, target flow, mating half, quantity and sample/drawing. JINGYE Fittings supports dimensional matching, samples, mixed-SKU sourcing, OEM production and second-source supply. | Material | Body Materials: Precision CNC-machined stainless steel 304, 316 and 316L for ISO 7241-B Series B male plugs, female sockets and coupling sleeves.
Valve Components: Stainless steel spring-loaded conical poppets, precision-finished valve seats and retaining parts for double-shutoff operation.
Locking Hardware: Stainless steel locking balls, sliding sleeves, retaining rings and wear-resistant components.
Springs: Corrosion-resistant stainless steel springs for poppet return and sleeve locking.
Sealing Materials: FKM (fluorocarbon) for selected fluids and temperatures; NBR for compatible hydraulic oils and EPDM for suitable water-based fluids.
Surface Finish: Precision-machined stainless steel surfaces, with cleaning and optional passivation for enhanced surface condition.
Manufacturing & Quality: CNC machining, material-grade verification, dimensional inspection, seal checks, leakage testing and batch traceability. |
