Graco 15D917 Compression Spring

Graco 15D917 Compression Spring

The Graco 15D917 Compression Spring is engineered to deliver consistent performance in demanding coatings applications. Designed for airless sprayer pumps, this spring ensures precise tension control, stabilizes fluid flow, and resists fatigue under high-cycle use.

Key Features

• Durable high-carbon steel with shot-peened, phosphate-coated finish
• Precision dimensions: 0.65 in × 1.1 in × 0.5 in
• Optimized for consistent output pressures and pump efficiency
• Compact profile allows easy installation in tight pump assemblies
• Resists abrasive solvents and heavy-duty use

Specifications

Materials and Surface Treatment

The spring is made from 97CrV6 derivative steel, shot-peened to reduce crack initiation, and phosphate-coated to resist corrosion from solvent-based coatings and abrasive particulates.

Design and Mechanical Performance

• Nominal load-deflection ensures stable pump stroke and seal longevity
• Uniform stress distribution along coils prevents permanent set
• Optimized coil pitch for predictable force-displacement characteristics
• Supports consistent output pressures even under thermal fluctuations

Applications

• Airless sprayer pumps for industrial and professional coatings
• Maintains consistent fluid flow and atomization quality
• Works with PTFE and fluorocarbon elastomer seals
• Compatible with high-pressure filtration systems

Installation and Maintenance

• Seat spring onto pump rod or plunger assembly aligned with guide pins or retaining clips
• Use light machine oil for initial lubrication to prevent galling
• Inspect free length and check for corrosion or deformation periodically
• Ensure flat ends make full contact with mating surfaces for consistent preload

Frequently Asked Questions