The Graco 160726 Pin, Ball Stop is engineered for precision in demanding spray applications. Designed to integrate seamlessly with your Graco pump parts, this durable stop pin ensures consistent flow control in every pass. Whether you’re tackling large-scale insulation or detailed finishing, its robust construction delivers long-lasting reliability. Optimized for use with an airless sprayer, the pin reduces wear and helps maintain peak performance under continuous operation.
It excels in professional environments, supporting efficient material transfer and optimal spray consistency for professional coatings. The compact 1.95 x 0.15 x 0.2-inch profile ensures straightforward installation and minimal downtime during maintenance. Backed by rigorous quality standards, this pin withstands rigorous cycles of opening and closing, reducing the risk of malfunctions. Enhance your system’s longevity and achieve smoother application results with every project, all while benefiting from improved component integrity.
The Graco 160726 Pin, Ball Stop represents a critical precision component within Graco’s high-performance pump assemblies used in spray foam, industrial coatings, and fluid delivery systems. Manufactured with stringent tolerances, this part measures approximately 1.95 x 0.15 x 0.2 inches and weighs a mere 0.06 pounds, optimizing weight-to-strength ratio. Engineered from high-grade stainless steel with a plated finish, the ball stop pin ensures consistent engagement between the inlet valve seat and spring assembly, minimizing wear and sustaining repeatable actuation cycles. Its advanced geometry controls fluid backflow under extreme pressures, delivering reliable performance in demanding environments. When integrated into an airless sprayer configuration, the component enhances both flow stability and mechanical resilience, contributing to extended system uptime and reduced maintenance intervals. Precision turned to ±0.001-inch tolerances and mirror-polished surfaces achieve optimal sealing clearances and reduce frictional drag. The pin’s micro-coating resists chemical attack from solvents and abrasive particulates, extending service life in high-cycle applications. Quality control employs coordinate-measuring machines (CMM) to verify dimensional compliance before assembly, ensuring seamless integration within the pump head mechanism.
Operating within Graco’s pump manifold, the 160726 pin functions as a dynamic ball stop, regulating the quick seal engagement to prevent pressure backflow. Its polished finish reduces friction at the valve interface, while optimized radial clearances ensure smooth travel and minimal wear debris. The component’s maintenance strategy often includes periodic inspection and cleaning with compatible solvents to mitigate fouling, especially in high-viscosity applications. In automated refill cycles, the pin sustains millions of actuation operations without dimensional drift, thanks to precision heat-treatment and surface conditioning. This reliability is further enhanced by its compatibility with integrated high-pressure filtration systems, which capture contaminants upstream and preserve the integrity of critical pump internals.
The engineering backbone of the Graco 160726 Pin, Ball Stop lies in its material selection and fabrication processes. Utilization of 17-4 precipitation-hardening stainless steel provides a blend of high tensile strength, up to 1,200 MPa after aging, and corrosion resistance under aggressive chemical exposure. The part undergoes CNC turning to achieve sub-micron surface finish on the sealing surfaces, reducing frictional heat generation during high-frequency cycling. Tight geometric tolerances—held to ±0.001 inches—are verified through laser scanning and coordinate-measuring machines, guaranteeing consistent performance across production batches. Post-machining, components receive a proprietary passivation treatment to eliminate free iron residues, optimizing seal longevity and resistance to oxidation in hot, humid operational environments.
Performance metrics for the 160726 pin highlight minimal leakage rates, typically under 0.02% of system flow at pressures up to 3,000 psi. This efficacy supports precise metering in spray foam, architectural coatings, and corrosion-resistant linings. Scheduled maintenance often includes visual inspection for wear patterns and dimensional verification using optical comparators. Replacement intervals can exceed 500,000 cycles in standard coatings service, with extended life achieved through routine lubrication of adjacent valve springs and seal surfaces. The part’s resilience also enhances overall professional coatings application consistency, reducing downtime and ensuring uniform film thickness across large surface areas.
When integrated into complete pump assemblies, the Graco 160726 Pin, Ball Stop contributes to optimized pump efficiency by minimizing dynamic friction and maintaining consistent inlet valve cycles. Its exacting tolerances ensure rapid open-to-close transitions, reducing pressure spikes and hydraulic hammer effects within the fluid conveyance system. Engineers designing pump manifolds benefit from the component’s predictability, enabling tighter control algorithms in automatic pressure regulation modules. Furthermore, enhanced seal longevity is observed when the part operates in conjunction with matched polymer seals and PTFE backup rings, yielding service life extensions and lower total cost of ownership in continuous-duty applications such as industrial spraying rigs and remote coating stations.
As a core component of Graco’s fluid handling architecture, the 160726 pin underscores the brand’s commitment to precision engineering and robust component longevity. Its compatibility with a range of chemical mediums—from polyurethane and epoxy to latex emulsions—extends its utility across diverse industry sectors. By delivering consistent valve timing, high-cycle durability, and resistance to corrosive agents, this ball stop pin not only safeguards pump internals but also elevates the performance parameters of modern airless and high-volume coating systems. Design engineers appreciate the part’s straightforward installation and alignment features, which facilitate streamlined assembly and rapid field serviceability without necessitating specialized tooling or calibration procedures.
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