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  • Graco CST531 0.031 in Orifice RS Airless Spray Gun Tip with 10 in Pattern Width
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Graco CST531 0.031 in Orifice RS Airless Spray Gun Tip with 10 in Pattern Width

The Graco CST531 0.031 in RS Airless Spray Tip is designed for precise application of gel coat and resin, delivering a consistent 10-inch spray pattern for industrial composite work.

  • Orifice Size: 0.031 inch
  • Spray Pattern: 10-inch fan width
  • Application: Gel coat & resin
  • System Type: RS airless spray gun
  • Use Case: Fibreglass & composite manufacturing

$155
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Compatible Machines

The Graco CST531 0.031 in Orifice RS Airless Spray Gun Tip with 10 in Pattern Width is specifically designed for specialised composite spray systems using RS-type guns.

  • Graco RS Airless Spray Gun
  • Graco RS Gel Coat Spray Systems
  • Graco Fibreglass Spray-Up Systems
  • Graco RS Chopper Gun Systems (with cutter attachment)
  • GlasCraft Composite Spray Systems (RS-compatible)

Product Description

The Graco CST531 is a high-performance RS airless spray gun tip engineered for precise application of thick materials such as gel coat and resin. With a 0.031 inch orifice and a consistent 10-inch spray pattern width, it ensures smooth, even coverage in demanding industrial environments.

This tip is part of Graco’s CST (Composite Spray Tip) range, making it ideal for fibreglass fabrication, marine production, and other composite manufacturing processes where accuracy and durability are essential.

Key Features

Orifice Size 0.031 inch (0.79 mm)
Spray Pattern Width Approx. 10 inches
Application Type Airless (RS system)
Material Compatibility Gel coat, resin, fibreglass materials
Series CST (Composite Spray Tip)

Usage & Benefits

Designed for industrial-grade performance, the CST531 spray tip provides a controlled fan pattern that reduces overspray while improving finish consistency. It is especially effective for high-viscosity coatings where standard spray tips may struggle.

  • Delivers uniform coating on composite surfaces
  • Handles thick materials with ease
  • Improves efficiency in production environments
  • Built for durability and long service life

Frequently Asked Questions

The number indicates spray characteristics. The "5" represents a 10-inch spray pattern, while "31" refers to the 0.031-inch orifice size.

No, this tip is only compatible with RS airless spray guns and composite systems. It does not fit standard RAC or conventional paint sprayers.

It is designed for high-viscosity materials such as gel coat, polyester resin, and fibreglass coatings used in composite manufacturing.

Yes, it is specifically built for industrial applications where precision, durability, and consistent spray performance are required.

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