Delivering unparalleled performance, the Graco 15J770 Housing RAC is engineered for demanding sprayer environments. Its precision-molded design ensures consistent paint delivery and protects internal seals from wear, making it an ideal upgrade for professional airless sprayer systems. Crafted from high-grade materials, this compact housing supports seamless fluid flow and reduces downtime. With its corrosion-resistant finish, it extends the service life of your equipment while maintaining optimal efficiency. It also features advanced high-pressure filtration compatibility for a contaminant-free finish.
Installation is quick and straightforward, requiring no special tools. Designed to withstand rigorous jobsite conditions, this housing ensures a tight seal and consistent pressure, preventing leaks during operation. It is fully compatible with top-tier filters and tips, accommodating a range of professional coatings without sacrificing performance. Upgrade your sprayer assembly with the Graco 15J770 Housing RAC and experience unmatched durability in every application.
$22.68The Graco 15J770 Housing RAC is a critical component engineered to maintain fluid control and structural integrity in high-pressure spraying systems. With an ultra-compact form factor measuring 0.7 in. by 0.65 in. by 0.65 in. and a featherweight mass of 0.025 lbs, this housing delivers exceptional performance in confined assemblies. Manufactured by Graco to OEM tolerances, it integrates seamlessly with RAC spray guns to optimize flow dynamics. The precision-engineered contour stabilizes internal valve elements and ensures uniform fluid distribution through the RAC orifice. It is ideal for high-volume production environments requiring airless sprayer reliability under extreme conditions.
Material selection is pivotal to the 15J770 housing’s operational lifespan. The component utilizes a 17-4 PH stainless steel alloy subjected to age-hardening processes that enhance yield strength and fatigue resistance. Tight-grain microstructure ensures dimensional stability under cyclical thermal loads and prevents stress corrosion cracking in solvent-based coatings. Machining processes include precision CNC milling followed by vibratory finishing to maintain tolerances of ±0.002 inches. Clear anodizing on mating surfaces reduces galling and optimizes thread engagement. This meticulous fabrication methodology supports professional coatings applications, where clean, uncontaminated fluid pathways are essential for finish quality.
Detailed design features include an internal conical seat geometry that aligns with spray gun valves to minimize dead volume and eliminate pressure drop. The housing bore supports a high-pressure O-ring seal and backup ring assembly that delivers robust sealing under transient surges up to 4000 psi. The stepped outer profile interfaces with a torque tool enabling precise clamp preload for consistent sealing force. Radiused edges on all internal fluid channels reduce shear points and maintain laminar flow. Such refinements directly contribute to enhanced pump efficiency and allow extended service intervals in continuous operation environments.
Performance metrics for the 15J770 Housing RAC have been validated through computational fluid dynamics (CFD) and empirical test cycles. Flow coefficients (Cv) exceed 0.35, supporting flow rates up to 2 GPM without cavitation or vapor lock. High-pressure filtration compatibility allows integration with 60 mesh or finer filters upstream, ensuring particulate exclusion and minimizing valve wear. Pressure drop across the housing remains below 25 psi at maximum rated flow, sustaining consistent atomization quality. These attributes combine to support demanding industrial use, where tight spray patterns and reproducible coating thickness are mandatory for quality assurance.
Maintenance insights highlight that routine inspection of sealing elements and channel cleanliness greatly extends seal longevity. The compact housing design facilitates rapid disassembly without custom tools; a single retention nut secures the housing to the spray gun manifold. Periodic ultrasonic cleaning in mild alkaline solutions removes residual coatings, while replacement of O-rings with perfluoroelastomer compounds expands compatibility with aggressive solvents and epoxy resins. Documented service life cycles exceed 20,000 actuation events when maintained according to Graco’s guidelines, reducing downtime in production lines.
Integration into airless spraying systems is straightforward. The 15J770 interfaces with standard RAC tips and swivel adapters, supporting 360° fluid swivel rotation for operator comfort. It can be retrofitted on existing Graco gun models without modification, delivering instantaneous performance uplift. Optimization for high-pressure filtration ensures that downstream accessories—such as pressure regulators and pulsation dampeners—operate within recommended parameters to minimize pressure ripple and achieve consistent spray patterns across varied viscosities.
In summary, the Graco 15J770 Housing RAC exemplifies precision engineering for demanding coating applications. Its robust material profile, meticulous manufacturing tolerances, and fluid dynamic enhancements ensure reliable, high-performance operation in professional environments. Whether deployed in architectural finishing, automotive undercoating, or industrial assembly, it sets a benchmark for component-level excellence in airless spray technology.
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