The Graco 189315 Washer Shim provides critical spacing for optimal seal integrity and fluid alignment in high-demand spraying systems. Designed to fit seamlessly into your pump assembly, this precision-crafted shim enhances the performance of your graco paint sprayer by maintaining consistent pressure and supporting efficient high-pressure filtration. Manufactured from durable stainless steel, it stands up to repetitive use under tough conditions. It integrates effortlessly with FAMXTM pump lines, delivering micro-adjustments that preserve nozzle alignment over extended use.
Ideal for industrial and renovation projects, this shim elevates your texture sprayer system by promoting smoother flow of heavy-body coatings. Its role in delivering uniform spray patterns makes it a must-have for professionals working with airless sprayer setups and demanding professional coatings applications.
$12.26In high-demand spray applications, even a fraction of misalignment can lead to uneven pressure and premature wear. Graco 189315 Washer Shim serves as a precision spacer to restore ideal clearance in pump assemblies. Crafted from corrosion-resistant alloy, this shim maintains consistent fluid dynamics, ensuring each stroke delivers uniform output. Ideal for shop technicians and field operators alike, it integrates seamlessly into maintenance routines to extend pump life and minimize downtime.
The shim’s flat, concentric design guarantees an even surface across the seating area. Manufactured from hardened stainless steel, its thickness tolerances remain within micrometer-level precision. Integration into a Graco pump chamber enhances volumetric efficiency, with minimal risk of deformation. Compared to polymer alternatives, this metallic washer shim withstands cyclic loading and abrasive particulates. Technicians using a graco 395 airless paint sprayer will notice smoother start-up cycles and a reduction in erratic pressure spikes once the shim is properly seated.
Start by depressurizing the system and isolating the fluid section. Remove the front cover, piston assembly, and old shim or gasket. Clean mating surfaces with a lint-free cloth and inspect for nicks or corrosion. Align the new washer shim in the designated groove, ensuring it sits flush against the back-up plate. Reassemble the piston assembly and torque fasteners to the manufacturer’s specification. Conduct a low-pressure test to confirm there’s no leakage, then perform a full pressure cycle to verify consistent output.
Once installed, the washer shim reinstates ideal piston-to-packings clearance, reducing internal bypass and improving volumetric efficiency. Operators will experience smoother pressure build-up and less pulsation in the spray pattern. For those upgrading older units or fine-tuning a graco 490 paint sprayer, this shim is often the missing link to achieve OEM-level performance. By eliminating micro-gaps, fluid recirculation within the pump head is minimized, conserving material and enhancing spraying accuracy on intricate surfaces.
Compatible with a wide range of Graco diaphragm and piston pump models, the shim supports both solvent- and water-based coatings. Routine inspection every 500 operating hours is recommended, especially in abrasive fluid environments. If flow irregularities or higher-than-normal draw-down rates are observed, disassemble the pump head and validate shim integrity. Replacement frequency depends on fluid abrasiveness and operating pressure, but regular upkeep using genuine parts like those found in a graco 695 paint sprayer maintenance kit helps prevent unexpected failures.
Genuine Graco parts are backed by a robust warranty and technical assistance network. For installation support, troubleshooting guidance, or customized maintenance service agreements, reach out to certified Graco distributors. Their expert teams can recommend complementary replacement parts, pump rebuild kits, or field servicing options to ensure uninterrupted operation. Trust in authentic washer shim components to keep your equipment running at peak efficiency without compromising safety or performance.
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