The Graco 110476 Straight Swivel Union Adapter ensures seamless connections in demanding industrial settings. Designed for optimal flow and rugged performance, it enhances your hvlp spray gun setup with precision sealing and durability. Featuring quick-connect compatibility, it reduces operator fatigue by preventing hose kinks and supports smooth swivel motion. Engineered to withstand high-pressure filtration and heavy-duty cycles, this adapter promotes consistent delivery for professional coatings applications across auto, marine, and wood finishing environments.
Ideal for integration with an airless sprayer or spray systems, the adapter streamlines maintenance and reduces downtime. Its robust design supports high-volume production, while industrial-grade seals and optimal turret rotation ensure leak-free performance under pressure. Whether you’re refinishing furniture, spraying automotive parts, or applying protective finishes, this adapter delivers reliable results when using a hvlp paint spray gun in professional settings.
$28.27The Graco 110476 Straight Swivel Union Adapter is engineered to provide a leak-proof coupling for high-pressure fluid conveyance in demanding industrial spray systems. Machined from premium stainless steel with precision surface finish on the swivel interface, the adapter exhibits superior corrosion resistance and dimensional accuracy. Additionally, the component is electroless nickel plated to further resist abrasive pigments and solvent attack, making it well-suited for high-wear applications. Its low-torque rotary union design allows seamless rotation under dynamic load, reducing hose stress and enhancing pump efficiency. Ideal for direct integration into airless sprayer configurations, it supports a wide range of viscosities and maintains stable fluid flow. Advanced O-ring sealing geometry ensures consistent sealing pressure and extends seal longevity under cyclic operation.
The adapter features a 3/8-inch NPT male inlet and a corresponding 3/8-inch NPT female outlet, delivering a compact footprint of just 1.2 inches in overall length and 0.75 inches in hex diameter for wrench engagement. Internal flow passages are precision-bored to 0.230 inches to optimize laminar flow and minimize pressure drop at rates up to 2 gallons per minute. Compact geometry enables seamless integration with a wide range of graco sprayer accessories while maintaining rigid tolerances of ±0.002 inches for consistent alignment. Threaded surfaces are chamfered to facilitate rapid start-up and reduce the risk of cross-threading during assembly.
This swivel union adapter is rated for continuous operation at pressures up to 6000 psi, with a burst pressure exceeding 20,000 psi for exceptional safety margins. Pressure drop across the union remains under 4% at nominal flow conditions, ensuring consistent output essential for fine-atomization applications. Surface roughness is controlled to Ra 12 microinches via electro-polishing, which aids in high-pressure filtration maintenance and prevents particle hang-up. Dynamic seal designs maintain zero leakage under full operating conditions, thereby supporting long-term pump efficiency and reliable delivery of professional coatings without interruption.
Installation requires minimal tooling, with a recommended torque of 15 to 20 Nm on the hex flats to achieve optimal seal compression without overstressing the union. Users should apply a thin layer of PTFE-based thread lubricant to maximize seal longevity and simplify future disassembly. The swivel union design incorporates redundant back-up rings to maintain axial alignment under axial and radial loading conditions. Designed as interchangeable graco pump parts, the adapter supports quick replacement and maintenance cycles. Standard procedures call for regular inspection of sealing elements every 500 service hours or prior to high-viscosity fluid transfer.
Routine maintenance of the swivel union adapter is streamlined by its modular construction, enabling rapid disassembly for cleaning or part replacement. Integration with high-pressure filtration systems is facilitated by a flush port on the inlet body, allowing backflush protocols to purge particulates. Internal O-rings and backup seals can be swapped using simple hand tools, reducing downtime during equipment servicing in processing plants and field operations. This adaptability ensures consistent performance when handling solvent-rich or pigment-loaded fluids in professional coatings applications. All wetted components resist chemical attack, ensuring component integrity under extended operation cycles.
In troubleshooting scenarios, the swivel union adapter should be inspected for wear-induced clearance increase or seal extrusion. Signs of decreased flow rate, pressure fluctuations, or audible leaks may indicate O-ring fatigue or thread damage. Replacement of internal seals with components from a dedicated graco gun repair kit restores original sealing characteristics and maintains assembly torque specifications. Regular recalibration of rotational resistance to a target of 0.3 to 0.5 Nm confirms that bearing surfaces remain within tolerance. Adhering to these maintenance protocols prolongs seal longevity, safeguards pump efficiency, and minimizes unplanned downtime in critical finishing setups.
Beyond standard finishing environments, the Straight Swivel Union Adapter excels in automated coating robots, reciprocators, and circulating loop systems where continuous rotation and high-pressure fluid delivery are required. Custom variants with alternative thread patterns or nonmetallic wetted surfaces can be supplied to meet proprietary fluid formulations or low-profile mounting requirements. Its compatibility with modular manifold designs enables parallel manifold arrays for multi-pump operations, enhancing overall pump efficiency in large-scale production lines. By minimizing dead-leg volume and supporting precise fluid metering, this adapter ensures uniform film build and performance consistency across diverse substrates in advanced industrial applications.
Designed to comply with industrial safety standards such as ISO 9001 and ATEX directives for use in potentially explosive atmospheres, the adapter undergoes rigorous non-destructive testing including helium leak detection and dye penetrant inspection. All materials conform to NSF-61 potable water code when required, and RoHS compliance ensures absence of restricted heavy metals. Traceability is preserved through laser-etched serial codes, supporting quality assurance workflows in regulated manufacturing sectors.
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