The GRACO 186866 BASE, REGULATOR is a critical component designed to regulate back pressure in circulating air spray systems. It is constructed from stainless steel (models 301, 304, and 316) and PTFE for wetted parts, ensuring compatibility with water-based fluids and resistance to corrosion. Its primary function is to maintain proper circulating pressure throughout the spray system, supporting consistent and reliable operation in professional spray applications.

Key Features:

• Back Pressure Regulator
• Model 223824 (2 in. sanitary clamp), Model 224486 (1-1/2 in. NPT(f))
• Stainless Steel (301, 304, 316) and PTFE
• 20 GPM (75 L/min) maximum fluid flowrate
• Maximum inlet pressure: 300 psi (2.1 MPa, 21 bar); Regulated pressure range: 15–200 psi (0.03–1.4 MPa, 0.3–14 bar)
• For use with water-based fluids in circulating air spray systems only
• Stainless steel and PTFE construction for durability and chemical resistance
• Designed for professional use in circulating air spray systems
• Maintains consistent back pressure for reliable spray performance
• Ease of maintenance with accessible diaphragm and bearing components

Applications:
Used in circulating air spray systems for professional applications, particularly where regulated back pressure is required to maintain proper spray gun performance and system pressure.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the spray system. Non-genuine parts may compromise system integrity and void warranties.
• Follow all safety instructions and warnings provided in the GRACO manual
• Ensure the system is depressurized before installation or maintenance
• Use appropriate tools and fittings as specified for the model (sanitary clamp or NPT(f))
• Regularly inspect and maintain diaphragm and bearing components for wear and proper function