The GRACO 903958 is a spring-operated mastic fluid pressure regulator designed for controlling and regulating fluid pressure in systems handling low to high viscosity sealants or adhesives. It is engineered for heavy-duty performance and is commonly used in industrial and manufacturing environments. The construction materials are not fully specified for this model, but similar GRACO regulators use robust materials such as zinc-plated carbon steel, brass, stainless steel, and high-performance seals for durability.

Key Features:

• Spring Operated Mastic Fluid Pressure Regulator
• 903958, 3/4in NPT
• Maximum regulated pressure: 4500 PSI
• Designed for use with low to high viscosity sealants and adhesives; compatible with GRACO equipment requiring precise fluid pressure regulation
• Engineered for lasting, heavy-duty performance
• Spring-operated mechanism for reliable pressure control
• Designed to dampen flow surges and maintain consistent pressure
• Quick shipping of genuine parts to minimize downtime
• Expert guidance available for setup and maintenance

Applications:
Ideal for industrial and manufacturing applications requiring precise control of mastic, sealant, or adhesive fluid pressure, such as in construction, automotive, and heavy equipment maintenance.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and longevity of equipment. Non-genuine parts may compromise safety and efficiency.
• Ensure compatibility with existing GRACO equipment and fluid systems
• Follow manufacturer guidelines for installation and maintenance
• Regular preventative maintenance is recommended for peak performance and longevity
• Consult with a GRACO specialist for correct setup and troubleshooting