The Graco 181730 Housing, Pump, Lower is engineered to optimize fluid flow and maintain consistent pressure in demanding applications. Ideal for the professional graco paint sprayer series, this precision-molded component enhances the performance of your airless sprayer with robust seals and high-pressure filtration for reduced downtime. Designed for compatibility across a range of professional equipment, it ensures reliable operation and superior finish quality. As a core system upgrade, it delivers durability under rigorous use and safeguards pump integrity in harsh environments.
Built to withstand rigorous cycles and high-demand applications, this lower housing supports seamless pressure control and reduces wear. It integrates effortlessly with your texture sprayer to deliver uniform material application for even coverage. Ideal for use with professional coatings, the durable design preserves pump performance and simplifies maintenance, ensuring consistent results across diverse projects.
$799.27Reliable fluid delivery begins with a sturdy housing that protects internal components and eliminates downtime. Graco 181730 lower pump housing stands as a critical replacement for professionals who demand consistent pressure, minimal pulsation, and robust sealing. By reinforcing the fluid section’s lower chamber, this housing preserves diaphragm integrity, reduces shear stress on coatings, and ensures a smooth, uninterrupted spray pattern in both high-volume industrial applications and detailed finishing work.
Metal selection and surface treatment define long-term durability. CNC-machined stainless steel and high-grade aluminum alloys resist abrasion from solvent-based and waterborne paints. A shot-peened exterior relieves stress, while interior surfaces receive a specialized coating to guard against pitting. Engineers maintain tight tolerances—often within a few microns—so the housing aligns perfectly with mating parts, eliminating vibration that can accelerate wear on diaphragms and check valves.
Compatibility with multiple airless sprayers makes maintenance straightforward. When servicing a graco 395 airless paint sprayer, technicians benefit from matching mounting patterns and a consistent fluid path. That uniformity reduces setup time, allowing crews to focus on paint quality rather than part fitment. Offering a streamlined solution for common pump failures, this housing keeps projects on track regardless of application scale.
Operators using high-output systems will appreciate how this housing elevates reliability in a graco 490 paint sprayer. Stable suction characteristics and a reinforced chamber support continuous operation, minimizing pulsation and maintaining a steady fan width. Regular maintenance intervals stretch out significantly thanks to improved fluid dynamics and superior material hardness.
Industrial contractors relying on high-capacity units gain added confidence when pairing this housing with a graco 695 paint sprayer. Its reinforced walls withstand abrasive or high-viscosity coatings without compromising throughput. The result is consistent spray performance even under heavy-duty, multi-hour cycles, reducing the need for frequent part swaps and extensive rebuild downtime.
Replacing the lower pump housing is a task completed with common hand tools and straightforward procedures. Begin by cleaning all mating surfaces and inspecting O-rings for cuts or flattening. Apply a thin layer of pump lube to seals, then torque housing bolts to approximately 180 ft-lb, following Graco’s specifications. Using a medium-strength thread locker on mounting bolts ensures the assembly remains secure during high-vibration conditions.
Exact dimensions are crucial for maintaining fluid pressure and reducing leaks. Inlet and outlet ports measure 3/8-inch NPT and 1/4-inch NPSM, while wall thickness tolerances stay within ±0.005-inch. Engineered for up to 4,500 psi operating pressure and temperature extremes from -20°F to 160°F, this housing meets stringent industry benchmarks. Every unit passes rigorous quality checks, including pressure testing and dimensional verification, before leaving the factory.
Exposure to abrasive pigments, harsh solvents, and thermal cycling challenges fluid section components. Graco 181730 housing utilizes corrosion-resistant materials that endure extended exposure without scoring or pitting. It has proven reliability in field tests exceeding 10,000 pump cycles, delivering consistent output across diverse coatings. That resilience translates directly into fewer service interventions and lower total cost of ownership.
Professionals recognize this housing for its precision engineering, backed by Graco’s extensive field experience. Substantial improvements in seal life and fluid compatibility make it a preferred choice from automotive refinishing to architectural spray projects. As part of a comprehensive maintenance program, it offers a straightforward upgrade that enhances both performance and uptime.
For a complete fluid section overhaul, pair your new housing with an OEM pump rebuild kit and benefit from certified field service support. This combination delivers maximum reliability, aligns with original equipment standards, and ensures your sprayer operates at peak efficiency for every job.
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