This durable bulkhead connector from Graco delivers reliable performance across demanding applications. Engineered for seamless integration with airless sprayer systems, it boasts a precision-machined 3/4 NPT thread that ensures leak-free operation under high pressure. Featuring rugged stainless steel construction, it offers exceptional resistance to corrosion and wear. The 17H621 fitting streamlines fluid management in industrial projects, simplifying maintenance and replacement for contractors. Its robust design minimizes downtime and withstands harsh chemical exposures, making it an indispensable component in heavy-duty finishing operations.
Ideal for professional coatings and sealants, this Graco fitting enhances fluid flow control and promotes consistent spray patterns. By improving fluid isolation and preventing contamination at connection points, it optimizes high-pressure filtration performance. Equipment managers appreciate its straightforward installation and compatibility with a wide range of pumping solutions. Designed for versatile use, it pairs effortlessly with both diaphragm and piston pumps, supporting both large-scale projects and precision applications.
$1194Graco 17H621 Bulkhead Fitting meets the demand for reliable fluid passages in industrial coatings systems. Precision-engineered geometry ensures a leak-free connection through tank walls or partition plates, even under high-pressure scenarios. Three-quarter inch NPT threads facilitate straightforward hookups to standard piping, pressure regulators, or quick-disconnect couplings without the need for custom adapters. Its compact body design minimizes flow restriction, preserving optimal material delivery rates across various viscosities. Whether handling solvent-based enamels or high-solids urethanes, this fitting reduces downtime associated with seal failures, ensuring continuous production cycles in demanding shop environments and large-scale spray booths.
Laid out by top hydraulic engineers, each Bulkhead Fitting 17H621 features CNC-machined threads that meet strict tolerance standards and ensure concentric alignment for accurate torque application. Your operators will appreciate the smooth metal-to-metal seal transition from inlet to outlet chamber, which minimizes turbulence and pressure drop. Machining from marine-grade 316 stainless steel offers outstanding corrosion resistance in salt-spray environments, while an anodized aluminum variant brings lightweight performance for overhead spray booths. Options for PTFE back-up rings and Viton or EPDM O-rings deliver tailored chemical compatibility across acids, alkalis, and aggressive solvents. Complete compatibility with graco magnum x7 parts lines ensures seamless integration in professional spray setups, eliminating the need for secondary adapters during retrofit projects.
Installation demands minimal tooling and can be completed in minutes, reducing labor costs on tight project schedules. After drilling a precisely sized hole in the tank wall or bulk panel, align the fitting’s flange flush against the exterior surface. Finger-tighten the locknut from inside the tank, then torque to manufacturer-recommended specifications—typically between 15 and 20 ft·lb—to create a reliable leak barrier without risking thread deformation. A recessed sealing groove accommodates standard O-rings or optional PTFE gaskets, allowing customization for high-temperature or aggressive chemical applications. Versatile thread standards support direct connections to NPT-threaded pressure pots, supply hoses, and manifold blocks. Integration with graco magnum x7 paint sprayer systems is commonplace among professional contractors, providing a proven fluid path for repeatable jobsite results and quick changeovers between coatings.
Bulkhead seal integrity in high-cycle operations hinges on selecting the right O-ring compound, with fluorocarbon (Viton) rated up to 200°C and EPDM ideal for waterborne systems and moderate temperatures. Cycle testing validates the design through over 5,000 connect-disconnect cycles without measurable increases in leakage or thread wear. Precision surface finishing reduces metal-on-metal friction, extending thread life and preventing galling under high-torque scenarios. Secondary sealing features, such as integrated backup rings and double-rib designs, add insurance against sudden pressure spikes in pump shutdowns. Contractors appreciate broad compatibility not only with Graco-branded components but also with legacy equipment, including graco 395 paint sprayer parts when retrofitting older spray rigs or blending multiple OEM systems.
Whether used to feed proportioners, in-line mixers, or pneumatic pressure pots, this Bulkhead Fitting excels under both static and dynamic pressure conditions. Automated robotic arms in automotive painting cells demand uninterrupted material flow, and this fitting’s robust sealing profile eliminates downtime associated with leak checks or mid-run part replacements. Spray booths benefit from consistent airless paint pressure, preventing finish defects and material waste. High-temperature epoxy and polyurea applications require PTFE-backed O-rings, which this design readily accommodates without tooling changes. Even epoxy flooring machines and plural-component dispensers gain from uniform flow rates, translating into smoother surfaces and tighter color consistency across large flooring installations.
Selecting the optimum bulkhead fitting involves evaluating maximum operating pressure, temperature range, and chemical environment. Standard 3/4 NPT threads accommodate most industrial spray systems, yet alternative thread forms, such as BSP or ISO, can be specified for international installations. Corrosion-resistant materials, like 316 stainless steel, prevent rust under humid conditions or when exposed to water-based coatings. For facilities pursuing quick-change maintenance routines, pre-assembled kits include spare O-rings, locknuts, and installation templates, minimizing downtime. For fast-paced operations demanding reliability, the 17H621 Fitting Bulkhead 3/4 NPT shines as a dependable component in any comprehensive fluid delivery strategy.
Ongoing preventive maintenance, including periodic seal replacement and visual inspection, preserves peak performance in fluid handling infrastructures. Expert service teams offer tailored support, from advising on O-ring compound selection to designing custom flanges for unique tank geometries. With proper scheduling and training resources, maintenance crews quickly master installation and troubleshooting steps, avoiding costly production delays. Confidence in your overall spray system begins with dependable components like the 17H621 Bulkhead Fitting 3/4 NPT, combined with after-sales service and professional maintenance programs to safeguard long-term uptime.
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