The GRACO 961635 is an air-operated fluid pressure regulator designed for precise control of mastic, sealants, and adhesives in industrial applications. Constructed from zinc-plated carbon steel, brass, stainless steel, Viton, tungsten carbide, UHMWPE, ethylene, propylene, and PTFE, it is engineered for durability and compatibility with a wide range of materials. Its primary function is to regulate and maintain consistent downstream pressure for spray guns or extruder guns in multi-outlet systems, ensuring smooth operation and dampening flow surges during valve changes or pump stroke transitions.

Key Features:

• Air Operated Mastic Fluid Pressure Regulator
• SKU:. 961635; Inlet/Outlet: 3/4" NPT (19.05 mm)
• Zinc-Plated Carbon Steel, Brass, Stainless Steel, Viton, Tungsten Carbide, UHMWPE, Ethylene, Propylene, PTFE
• Maximum regulated pressure: 4500 psi (310 bar, 31000 kPa, 31.0 MPa); Maximum viscosity: 80,000 cP
• Designed for use with mastic, sealants, and adhesives; suitable for low to high viscosity materials
• Precise pressure control for each spray gun from a common header system
• Dampens flow surges during line valve opening and pump stroke changeover
• Robust construction for long service life and reliability
• Suitable for demanding industrial environments

Applications:
Ideal for controlling and regulating the pressure of mastic, sealants, and adhesives in industrial spray or extrusion systems. Commonly used in manufacturing, construction, and maintenance operations where consistent material application is critical.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment. Non-genuine parts may compromise system integrity and void warranties.
• Install the regulator ahead of each spray gun or extruder gun in a multiple outlet system for best results
• Ensure all connections are properly tightened and sealed to prevent leaks
• Follow manufacturer torque specifications for assembly (e.g., 35–40 ft-lb for certain components)
• Use recommended thread sealants such as Loctite TL-242 or Loctite 601 where specified
• Regularly inspect for wear and maintain according to GRACO guidelines