Graco Mark X HD Spray Gun & Hose – Ultimate Parts Breakdown
Contractors and texture professionals count on the Graco Mark X HD family to deliver heavy-duty performance. Known for handling skim coats, textures, primers, and thick coatings, it sets the gold standard in graco airless paint sprayer equipment. This comprehensive parts guide lists gun, hose, and accessory components that match factory tolerances and durability—perfectly aligning with your graco parts list and graco paint sprayer parts diagram.
1. Inline Heavy-Duty Texture Gun (Part 245820)
This rugged spray gun is the engine of your texture application process:
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Constructed with a durable aluminum body designed for extended use with heavy materials.
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Seamlessly integrates with RAC X SwitchTips (e.g., 531, 541), giving operators adjustable patterns and excellent finish control.
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Compatible with all graco airless spray guns across ProContractor systems, enabling consistency across various Graco fleets.
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Full rebuild kits are available—replace seals, seats, and springs in minutes for minimal downtime.
2. High-Pressure Hose – ½″ x 50 ft (Part 278499)
Robust and reliable, this coupled hose connects your texture gun to the sprayer base:
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Rated for 3,300 psi, it handles high-volume texture materials with ease.
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The reinforced braid ensures excellent flexibility while resisting kinks.
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Easily replaced or extended using compatible graco magnum x7 parts hoses—ideal for field adjustments.
3. Coupled Hose – 3/8″ x 11 ft (Part 191239)
This flexible intermediate hose connects the reel or gun:
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Ideal for whip-hose setups that demand operators to move freely.
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Swivel fittings and quick-coupler designs make it easy to switch hoses mid-job without losing time.
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Cross-compatible with graco electric paint sprayer models for consistent performance.
4. Hose Fitting Adapters (Part 159239)
Small components, big impact:
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Standard 3/8″ x 1/2″ hose fittings support seamless connections between hose types.
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OEM-grade fitting adapters ensure leak-free performance and are listed clearly in the graco paint sprayer parts diagram, alongside repair instructions.
5. RAC X Tip Guard (Part 246215)
Protect both your tip and work surfaces:
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Yellow safety guard locks onto RAC X tips, shielding spray areas and the tip itself.
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Fits characteristically across texture and paint guns, including those using magnum x7 tips.
6. Hose Reel & Swivel Components
Manage long hose setups easily:
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Swivel handle and pin (Parts 214-217) enable smooth hose deployment.
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Bushing (Part 202) and swivel adapter (Part 219) maintain hose rotation without wear.
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Hose reel tube and pivot parts (Items 220, 210) streamline high-volume spraying—key on job sites.
7. Pressure Transducer & Remote Fitting (Optional)
Advanced customers may integrate remote gauges:
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Transducer (Part 166) allows feedback control through accessories like BlueLink or Bluetooth add-ons.
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Adapter parts ensure compatibility with hose reel gun setups and graco airless spray guns.
8. Installation Torque & Assembly Info
Precision matters:
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Hose fittings typically require 130–150 in‑lb torque.
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Swivel hardware and hose reel assemblies demand 30–35 ft‑lb torque.
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All torque values are provided in the graco paint sprayer parts diagram for accurate and safe assembly.
9. Shared Components with Other Graco Systems
Stock one inventory, serve many:
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Hose part numbers (279499, 191239) cross-compatible with Magnum X7, Ultra Max, and standard electric texture units.
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Tip guard, swivel, and fittings are shared across multiple lines—simplifying maintenance and sourcing.
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Inline gun rebuild kits are consistent across graco airless paint sprayer models, reducing support costs.
10. Maintenance & Repair Insights
Keep your texture rig running reliably:
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Check hose for wear and replace if braided layers show through.
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Inspect o-rings monthly, replace with OEM sets to prevent material leakage.
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Rebuild gun seals every 500–1,000 hours using the factory seal kit.
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Clean tip guard after each material use to maintain atomization quality.
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Identify parts in diagram, order through your graco parts list for simple replenishment.
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Nozzle compatibility ensures you can use the same guard and hose fittings across personal graco airless spray guns.
Final Takeaway
The Graco Mark X HD Spray Gun & Hose assembly delivers unmatched durability and adaptability. Built for rugged texture and paint applications, its inline gun and high-pressure hoses are backed by a comprehensive graco parts list and exploded graco paint sprayer parts diagram. With components shared across systems like magnum x7, Graco electric paint sprayer rigs, and other airless spray guns, maintenance is streamlined and straightforward.