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The 1QT9 / 2501 90° elbow adapter is purpose-built to address the dual challenges of cross-standard fluid routing and destructive fluid hammer effects in high-pressure hydraulic systems. Combining 37° JIC male flare and NPT male tapered thread into a single rigid component, it eliminates the leak-prone stacked adapter assemblies that plague mixed-standard North American and global equipment. Manufactured via high-pressure closed-die forging with precision rolled threads, the adapter delivers a burr-free, grit-free engagement that eliminates cross-threading and galling during installation. Its dense, continuous metal grain structure absorbs sudden pressure surges and continuous mechanical vibration, maintaining a leak-free metal-to-metal seal even under the most severe operating conditions. Suitable for conveying hydraulic oil, industrial water and compressed gases, it drastically reduces unplanned downtime and extends the service life of critical fluid power systems.
Product Name |
Sanheng Hydraulic 90° Elbow 2501 MJ-MP / 1QT9 Flare METRIC NPT Adapter |
Code |
1QT9 |
Material & Surface Treatment |
Carbon steel (zinc plated Cr3+); Stainless steel (passivation) |
Application |
Pipe connection（oil,water,gas） |
Technology |
CNC machining & Forged |
Package |
All adapters equipped with thread protective end caps, inside plastic bags, and then inside standard blank carton boxes. |
Our main products |
Threaded hydraulic hose fittings and pipe adapters, sucn as Metric , BSP, BSPT, NPT , JIC , ORFS, SAE thread. |
Manufactured in strict compliance with SAE J514 (JIC) and ASME B1.20.1 (NPT) international standards, all thread profiles and 37° flare angles are controlled to micron-level tolerances. Carbon steel variants pass 96-hour neutral salt spray testing without red rust, while stainless steel versions withstand over 500 hours of salt spray exposure. The full size range covers 1/8" to 2", with rated working pressures from 16 to 40 MPa. Complete dimensional drawings and material certification reports are available upon request, and all adapters are 100% interchangeable with equivalent products from Parker, Eaton and other global mainstream brands.
Fluid Hammer Resistant Forged Body: Dense continuous grain structure eliminates internal voids, absorbing sudden pressure surges and shock loads that cause cast fittings to crack or burst.
Self-Tightening 37° Flare Seal: Precision-machined JIC flare creates a metal-to-metal seal that tightens proportionally with system pressure, eliminating O-ring degradation and long-term leakage risks.
Galling-Resistant Rolled Threads: Cold-rolled NPT threads deliver 30% higher fatigue strength than cut threads, with a smooth surface that prevents galling during repeated assembly and disassembly.
Dual-Standard Single-Piece Design: Integrates JIC flare and NPT tapered thread into one unit, eliminating 50% of potential leak points and saving 35% installation space compared to stacked separate adapters.
Wide Temperature Range Performance: Operates reliably across -40°C to 200°C, maintaining structural integrity and sealing properties in both arctic outdoor environments and high-temperature industrial processing plants.
Low-Cavitation Internal Radius: Optimized 90° internal bend with smooth rounded edges minimizes fluid turbulence and cavitation, preventing premature pump and valve wear.
Carbon Steel (RoHS-Compliant Cr3+ Zinc Plated)
Adopts a uniform, scratch-resistant trivalent chromium zinc plating process that meets global environmental regulations. It provides excellent oxidation and rust resistance, with high tensile strength and exceptional cost-effectiveness, making it ideal for general construction, agricultural machinery and indoor industrial applications.
Stainless Steel (Chemical Passivation)
Uses high-quality 304/316L stainless steel billets processed through a low-temperature passivation treatment that removes surface free iron and forms a dense, self-healing protective oxide film. This enhances acid, alkali and salt spray corrosion resistance by 300% compared to untreated steel, perfectly suited for offshore oil & gas, chemical processing and marine applications.
North American Heavy Construction Equipment: Standard connection for excavators, bulldozers and wheel loaders, which universally use JIC hydraulic lines and NPT pipe threads.
Agricultural Machinery: Used for hydraulic pipeline steering and branching on tractors, combine harvesters and irrigation systems, with excellent resistance to dust, vibration and outdoor weather.
Oil & Gas Field Equipment: Ideal for high-pressure wellhead control systems and hydraulic power units, withstanding fluid hammer and corrosive well fluid exposure.
Industrial Hydraulic Power Units: Perfect for mixed-standard hydraulic stations and CNC machine tools, simplifying pipeline layout and reducing spare part inventory.
Mobile Hydraulic Systems: Used in cranes, dump trucks and aerial work platforms, with superior shock and vibration resistance for on-road and off-road operation.
The adapter body is formed in a single operation via high-pressure closed-die forging, which aligns the metal grain flow along the component contours to maximize tensile strength and impact resistance. Unlike cut threads, our cold-rolled NPT and JIC threads have a smoother surface and higher fatigue strength, eliminating sharp edges that cause galling. All 37° flare sealing surfaces are precision machined in a single setup to ensure perfect concentricity. Each unit undergoes 100% thread go/no-go gauge inspection, hydraulic pressure sealing test and random salt spray testing before delivery to guarantee zero defects.
To assist your procurement and engineering teams, we have compiled answers to the most common technical and operational inquiries regarding our hydraulic adapters.
Q: What is the primary advantage of the forged and CNC machined construction?
A: Forging creates a dense, non-porous internal metal structure that easily withstands high-pressure spikes without cracking. The subsequent CNC machining ensures the threads are cut to exact tolerances, guaranteeing a smooth, leak-proof mechanical seal upon installation.
Q: Can these adapters reliably handle media other than hydraulic oil?
A: Absolutely. The precise flare metric design and high-grade surface treatments (zinc plating or stainless steel passivation) make these adapters highly suitable for the safe transmission of industrial water and compressed gases, alongside standard hydraulic fluids.
Q: How do you protect the threads from damage during international shipping?
A: We employ a strict multi-layer packaging protocol. Every single adapter is fitted with a protective plastic end cap over the threads, sealed in a moisture-resistant plastic bag, and then packed firmly into standard blank cartons to prevent any transit-related abrasion.
Q: Do you offer flexibility for small-batch testing or prototyping?
A: Yes, we highly encourage sample orders to allow your engineers to verify our quality firsthand. For items currently in stock, we enforce no minimum order quantity (No MOQ), providing you with maximum flexibility for small batch shipments.
Q: Is it possible to have our own part numbers and logos applied to the fittings?
A: Yes, we provide comprehensive OEM/ODM services. We can utilize high-precision laser marking to engrave your proprietary brand logos, specific part codes, or operational markings directly onto the adapters to support your brand identity.
Q: What is the anticipated lead time for a standard bulk production run?
A: For conventional bulk orders that require manufacturing, the standard delivery timeframe is approximately 30 days. However, we maintain a robust inventory of standard components, meaning many orders can be dispatched much sooner to meet your urgent needs.
