The Graco 189319 Seat Ball SST 1590 is an essential stainless steel valve element designed to maintain optimal flow and pressure control in airless sprayer equipment. Engineers and technicians rely on this component to deliver consistent spray patterns and enhance the longevity of spray guns. As part of the core maintenance lineup, this item complements other Graco parts to achieve superior performance in demanding environments involving professional coatings applications.
Integrating this seat ball into your maintenance routine simplifies troubleshooting and reduces downtime in high-pressure operations. It’s one of the critical parts for graco sprayers crucial for maintaining consistent delivery and minimizing overspray during demanding coating projects.
$368.13Offering exceptional sealing performance, this seat and ball valve assembly enhances precision in high-pressure fluid control applications. Crafted from corrosion-resistant stainless steel, the unit incorporates PTFE seals that withstand aggressive chemicals and abrasive media without compromising flow integrity. Designed for straightforward installation, quick-change replacement procedures help minimize downtime during maintenance intervals. Rigorous factory testing confirms consistent sealing under pressures up to 3000 PSI, while optimized ball geometry ensures smooth operation. Suitable for heavy-duty spraying systems and compatible with multiple Graco pump platforms, this component elevates process reliability.
Internal bore diameter measures 0.125 inch, supporting flow rates up to 0.8 GPM with minimal pressure drop. Ball surface finish is machined to Ra 8 microinches, delivering laminar flow and reducing turbulence. Seal dimensions adhere to ISO 9624 tolerances, ensuring interchangeability across multiple sprayer models. Maximum working pressure rating of 3000 PSI at ambient temperature, with an operating temperature window from -20°F to 250°F. Chemical compatibility spans solvents, oils, water-based fluids, and corrosive agents. Dimensions: 1.5-inch length, 0.625-inch outer diameter, weight 1.2 ounces.
Fine-tuned valve porting enhances fluid acceleration while preventing cavitation effects in high-demand cycles. Its streamlined internal contours maintain stable pressure profiles, critical for consistent spray patterns in industrial coatings. Rapid cyclic operation is supported by minimal inertia in the ball assembly, reducing actuation lag. Balanced design prevents pressure surges during on/off transitions, thereby safeguarding adjacent downstream components. When calibrated correctly, flow variation remains under 2 percent across all standard operating ranges.
Periodic inspection of the seat and ball is recommended after every 500 operational hours to verify seal integrity and surface finish. Cleaning procedures involve disassembling the valve assembly, gently removing debris with a soft-bristled brush, then re-lubricating contact points with a compatible high-pressure dielectric grease. Replacement kits are available for quick on-site swaps of seals, eliminating extended downtime. Proper torque settings during reassembly ensure uniform seal compression and extend service life, even under harsh field conditions.
Compatible with a variety of airless and diaphragm pump systems, the 189319 SeatBallSst1590 integrates seamlessly with many standard manifolds and quick-connect fittings. Adaptable to both in-line and bulk tank configurations, its modular design simplifies retrofitting older equipment. Maintenance teams can coordinate with existing inventories without extensive retooling. Ideal for retrofit projects, this valve assembly can be used alongside graco magnum x5 parts in mixed-system environments to streamline parts management and reduce procurement complexity.
Engineered for continuous operation in abrasive or corrosive fluid streams, the valve assembly resists wear through a combination of hardened steel and polished ball surfaces. Fatigue life testing confirms stable performance beyond one million actuation cycles. Its robust construction stands up to thermal excursions and cyclic loading. Inline flow monitoring shows negligible degradation after extended service intervals, while surface passivation prevents oxidation. Replacement frequency drops significantly when compared to cast or plated alternatives thanks to its proprietary material treatments and design. Featuring integration potential with graco 360 paint sprayer parts, this unit excels in demanding spray applications.
Precise installation begins with verifying seating surfaces for debris-free conditions and matching O-ring dimensions to system requirements. Assembly should align ball axis within 1 degree of manifold centerline to prevent uneven wear. Use calibrated torque wrenches set to 20–25 in-lb when fastening the unit into standard flanges or quick-connect adaptors. After assembly, conduct a staged pressure test at 1500 PSI for five minutes, monitoring for any leakage or pressure decay. Proper integration ensures repeatable cycle times and consistent spray results.
Special features include micro-polished sealing faces that enhance initial breakaway torque and minimize leakage. Customizable O-ring profiles offer tailored chemical resistance, while interchangeable bodies allow rapid configuration changes for different fluid viscosities. Integral alignment grooves ensure consistent seating, reducing installation errors and optimizing spray consistency. Designed to meet rigorous industry standards, including EN ISO 9001 certification benchmarks, this assembly demonstrates unmatched precision. For advanced system upgrades, compatibility with graco 360 dsp controllers adds real-time diagnostic feedback and automated performance tuning.
Expert users appreciate the meticulous engineering that underpins this product. Professional maintenance and calibration services are available to maximize lifespan and ensure optimal performance in critical operations. For teams seeking reliable valve solutions and comprehensive support, consider our premium service contracts designed specifically for Graco 189319 SeatBallSst1590 assemblies.
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