The Graco 121311 Connector Fitting NPT X JIC offers secure connections for high-pressure operations. Precision machined from rugged steel alloy, this compact male adapter delivers reliable performance in demanding jobs. Designed to integrate with Ultra Max II airless sprayers, it ensures a leak-free seal that maintains consistent fluid flow under rigorous conditions. Engineered for superior high-pressure filtration, this fitting helps safeguard spray system components. Experience unmatched versatility in your airless sprayer systems.
Built to support professional coatings applications, the Graco 121311 Connector Fitting NPT X JIC excels in heavy-duty environments where precise control and minimal downtime are crucial. Its robust sealing surface and corrosion-resistant finish enhance longevity, while the JIC interface guarantees compatibility across multiple equipment lines. This versatile fitting elevates your system’s efficiency, whether operating small touch-up tools or full-scale rig setups, offering seamless integration and reduced leak potential for superior results in any professional coatings project.
$8.39The Graco 121311 Connector Fitting NPT x JIC is a precision-machined interface engineered for demanding fluid transfer and spray applications. By pairing a 3/8-inch NPT male thread with a 1/2-inch JIC 37° flare male end, the unit provides a reliable metal-to-metal seal that meets SAE J514 and ANSI B1.20.1 standards. Dimensioned at 0.8 inches in length with a hex width of 0.85 inches, this compact fitting integrates seamlessly into Graco Ultra Max II Series and E30/EXP2 pump platforms. Optimized for leak-tight performance, it reduces potential for galling and stress concentration in high-pressure manifolds.
Critical engineering parameters include a maximum working pressure of 5,000 psi (345 bar) and a recommended assembly torque of 20–25 ft-lbs to ensure optimal thread engagement and seal integrity. Internal flow passages are optimized via CNC turning to maintain laminar fluid profiles and reduce pressure drop. In applications such as cabinet recirculation or remote manifolding, the fitting’s tight tolerances and robust seal geometry improve overall system responsiveness, especially when integrated with an airless sprayer solution where pulsation control and rapid response are vital.
Material selection plays a central role in ensuring longevity in corrosive or abrasive environments. The 121311 connector is fabricated from grade 1018/1020 carbon steel bar stock, heat-treated to achieve a Rockwell C hardness of 23–28 HRC. A zinc phosphate chemical conversion coating enhances corrosion resistance and bond strength before final top-coat passivation. These treatments extend functional life by protecting against oxidation, chemical attack, and particulate erosion, which is essential in applications involving high-solvent coatings or fine particulate slurry circulation.
Performance metrics for the Graco 121311 include controlled flow characteristics with a Cv value of approximately 0.11, enabling predictable volumetric displacement at high throughput rates. Pressure testing certifies burst resistance above 15,000 psi (1,034 bar), providing a safety factor of 3:1 under typical operating conditions. By minimizing internal clearances and maintaining precise thread engagement geometry, the fitting contributes directly to improved pump efficiency, reducing energy consumption and heat generation during continuous duty cycles.
The JIC 37° flare face delivers metal-to-metal sealing that obviates the need for soft O-rings, thereby reducing maintenance intervals. Thread purging grooves ensure uniform seal compression, while a fully deburred interior limits particle entrapment, aiding high-pressure filtration processes. The machined hex flats allow for standard wrench engagement, and the compact profile accommodates tight mounting locations in sprayer and fluid control assemblies. Users benefit from predictable torque-to-seal behavior and extended seal longevity when paired with compatible coatings,” “lubricants,” “and assembly compounds.
Commonly deployed in professional coatings and industrial maintenance fleets, the 121311 connector supports rapid changeover between substrates and coating materials. Its performance under cyclic loading and thermal cycling makes it suitable for high-temperature polymer spray lines and solvent-laden paint circuits. In addition to conventional coating rigs, the fitting excels in chemical injection skids, food-grade washdown loops, and offshore hydraulic packages, where consistent seal integrity guards against leaks. Integration with Graco Ultra Max II and E30/EXP2 pumps ensures repeatable fluid delivery for atomization control, fine pattern distribution, and dosing precision.
For optimal service life, inspect threads and sealing surfaces before each assembly, removing debris or abrasive residues. Apply a thin film of approved thread lubricant, such as a PTFE-based compound, to reduce galling and improve corrosion resistance. Torque fittings within the specified range, and re-torque after initial pressurization if permissible. Periodic high-pressure filtration of system fluid (2–5 microns) prevents particulate ingress that can compromise mating surfaces. Properly maintained, the Graco 121311 Connector Fitting delivers consistent performance across diverse fluid handling, coating, and spraying applications.
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