The GRACO 288311 is a pneumatic back pressure regulator designed to control and maintain system pressure in fluid circulation systems. It is constructed with stainless steel wetted materials for compatibility with a wide range of fluids, including catalyst and waterborne materials. This regulator is intended for use in industrial applications where precise pressure control is required.

Key Features:

• Pneumatic Back Pressure Regulator
• 288311, 1-1/2 NPT
• Stainless steel wetted materials, PTFE/elastomer hybrid diaphragm
• 20 gpm (75 lpm)
• 300 psi (20.6 bar) max fluid pressure
• Compatible with catalyst and waterborne materials
• Large orifice for high volume flow rates
• Air operated for remote automated control
• Hardened stainless steel seat for low wear and long life
• Accurate and responsive pressure regulation
• Designed for ease of maintenance and reliability

Applications:
Used in industrial fluid circulation systems requiring precise pressure control, such as in manufacturing, chemical processing, and material handling.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper thread sealant is applied to connections
• Torque fasteners to manufacturer specifications (see manual for details)
• Lubricate moving parts as recommended
• Follow alternating pattern when tightening screws for even pressure distribution
• Regularly inspect diaphragm and seat for wear
• Maintain air supply within specified limits (max 100 psi/7 bar)
• Check for leaks and proper pressure regulation after installation