The Graco 106115 Lock Spring Washer (Hi-Collar) delivers exceptional durability and performance for demanding airless sprayer applications. Engineered for robust operation, this precision component maintains high-pressure filtration integrity and supports reliable spray patterns in professional coatings projects. As a critical piece of graco spray gun parts, it ensures consistent pressure control and prolongs equipment life under intense usage conditions.
Designed to fit seamlessly with popular models like the Ultra Max II 695 Hi-Boy and Ultimate MX II 1095/1595, this lock spring washer optimizes spring tension for stable spray operations. Ideal for maintenance of the graco 395 paint sprayer, it reduces downtime and enhances fluid delivery precision. Incorporating corrosion-resistant materials, it promotes long-term reliability and supports professional coatings specialists in achieving flawless finishes on every project. Ensuring smooth coverage across surfaces.
$8.74The Graco 106115 Lock Spring Washer (Hi-Collar) serves as a critical retention component in high-pressure airless sprayer manifolds, providing reliable axial preload to maintain consistent valve stack alignment. Measuring 0.45 in width, 0.25 in height, and 0.45 in depth, this washer is precision CNC-machined from tempered stainless steel to resist corrosion under extreme fluid shear. Its hi-collar geometry promotes optimal clamp force distribution across seal interfaces, supporting professional coatings applications in both contractor and industrial environments. Integration with piston rods in Ultra Max II 695 Hi-Boy and Ultimate MX II 1095/1595 Electric Airless Sprayers ensures steady recoil absorption. This design also adapts seamlessly to accessories such as the magnum x5 paint sprayer when retrofitted into adaptable pump frames.
The hi-collar profile of the 106115 features a counterbore section that centralizes axial loads directly onto mating cartridges, limiting radial expansion. Material selection prioritizes austenitic stainless steel alloy with corrosion-resistant passivation and micrograin structure tailored for high cycle fatigue. Surface hardening via precision shot peening ensures consistent hardness levels between 40–45 HRC, optimizing spring washer flex life without sacrificing ductility. Integrated chamfers facilitate low-stress installation, reducing stress concentrations at the spool end. This washer’s design also accommodates advanced high-pressure filtration systems, maintaining particulate exclusion thresholds down to 30 microns without impeding fluid flow. Compatibility extends to manifold couplings in the graco x7 airless paint sprayer family for heavy-duty professional coatings deployments.
In dynamic cycle testing, the 106115 washer maintains 85 percent of its original spring deflection capacity beyond 100,000 reciprocation cycles, directly contributing to pump efficiency and reducing downtime. Finite element analysis confirms uniform stress distribution across the collar rim under 3,000 psi of hydraulic back-pressure. The design minimizes stress risers, extending seal longevity by up to 30 percent when matched with premium fluoropolymer o-rings. This robust architecture supports a broad range of fluid viscosities, from water-based emulsions to high-solids polyurethanes, commonly pumped by hplv paint guns. The result is consistent film build, low overspray, and superior atomization even under fluctuating inlet pressures.
Installation of the Hi-Collar Lock Spring Washer requires a calibrated torque wrench to apply the specified preload torque of 15 in-lbs. Lubricate mating surfaces with a compatible high-temperature assembly grease to prevent galling. Confirm seat alignment by measuring axial clearance with a feeler gauge set to 0.003 in. Periodic inspection intervals of 500 hours are recommended, or after every 5 gallons of medium-solids coatings, to verify washer integrity and torque retention. In field service scenarios, replacement intervals may be extended by integrating inline pressure transducers and vibration monitoring to detect preload loss or fatigue onset.
When integrated into a complete airless sprayer maintenance program, the 106115 washer enhances system reliability by preserving valve stack alignment and reducing cavitation risk in high-duty pumps. Substituting generic lock washers can lead to bypass leakage, uneven seal compression, and accelerated wear on packing cups. By contrast, this hi-collar variant ensures precise spring force calibration, harmonizing with check valves and plungers in Graco’s IntelliCoat™ manifold assemblies. Coupled with proper fluid filtration and pump efficiency optimization, operators can achieve extended maintenance cycles and lower overall lifecycle cost of ownership.
Beyond standard spray rigs, the 106115 washer finds applications in specialized dosing systems, metering pumps, and closed-loop circulation circuits requiring tight tolerance retention under extreme thermal cycling. Its adaptability supports both retrofit modifications of legacy units and integration into next-generation spray modules featuring smart fluid control. Engineering teams benefit from detailed CAD models, FEA validation reports, and material certification documents available through Graco’s technical support network. This comprehensive approach ensures that the Hi-Collar Lock Spring Washer continues to meet the rigorous demands of industrial finishing and heavy-use professional coatings environments.
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