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Graco 222121 HP Corrosion-Resistant Fluid Regulator

The Graco 222121 HP Corrosion-Resistant Fluid Regulator provides precise high-pressure control for corrosive and waterborne fluids in industrial spray and dispensing systems.

  • Maximum working pressure: 1500 PSI
  • Regulated pressure range: 150–1200 PSI
  • Stainless-steel wetted parts for corrosion resistance
  • 1/4" NPT female inlet × 1/4" NPT male outlet
  • Compact spring-actuated design

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Graco 222121 HP Corrosion-Resistant Fluid Regulator

Compatible Machines

  • Graco Air-Assisted Airless Spray Systems
  • Graco Industrial Fluid Dispensing Systems
  • Graco Chemical Injection Skids
  • Graco Catalyst & Resin Feed Systems
  • Graco Waterborne Coating Supply Systems
  • Graco Adhesive & Sealant Dispensing Units
  • Custom High-Pressure Fluid Delivery Packages (with 1/4" NPT connections)

The Graco 222121 HP Corrosion-Resistant Fluid Regulator is a compact, spring-operated, high-pressure regulator designed for precise fluid pressure control in demanding industrial applications. Built with stainless-steel wetted parts, it delivers reliable performance when handling corrosive, waterborne, or chemically aggressive fluids.

This regulator is widely used in professional spray finishing, fluid dispensing, and chemical coating systems where consistent pressure regulation is essential for product quality, safety, and reduced material waste.

Technical Specifications

Part Number 222121
Maximum Working Pressure 1500 PSI (103 bar)
Regulated Pressure Range 150 – 1200 PSI
Maximum Flow Rate 1.0 GPM (3.8 L/min)
Inlet Connection 1/4" NPT Female
Outlet Connection 1/4" NPT Male
Wetted Materials Stainless Steel
Regulator Type Spring-Actuated
Maximum Fluid Viscosity Up to 500 cP

Key Features

  • High-pressure regulation up to 1500 PSI
  • Corrosion-resistant stainless-steel internal components
  • Compact lightweight body for easy installation
  • Replaceable valve cartridge for quick servicing
  • Stable output pressure for consistent spray and dispense performance
  • Ideal for aggressive and waterborne materials

Typical Applications

  • Industrial paint and coating spray systems
  • Air-assisted airless spraying
  • Adhesive and sealant dispensing
  • Catalyst and resin delivery systems
  • Chemical processing and fluid injection
  • Waterborne material handling

Frequently Asked Questions

It regulates fluid outlet pressure coming from a pump or pressurized source, ensuring consistent and controlled material flow to spray guns or dispensing valves.

Yes, the stainless-steel wetted components are specifically designed for corrosion resistance, making it suitable for harsh and reactive fluids.

No, it is not a pump. It only regulates pressure supplied by an external pump or pressurized fluid system.

The inlet is 1/4" NPT female and the outlet is 1/4" NPT male.

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