The GRACO 236770 is a manual back pressure regulator designed to maintain consistent system pressure regardless of flow demand. It is constructed with stainless steel wetted materials for compatibility with catalyst and waterborne fluids, and is intended for use in small circulation systems within GRACO equipment.

Key Features:

• Back Pressure Regulator
• Low Pressure Mini, 3/8 (m) x 3/8 (f)
• Stainless steel wetted materials, tungsten and carbide components for wear resistance, PTFE/Elastomer hybrid diaphragm
• Maximum inlet pressure: 300 psi (21 bar, 2.1 MPa); Regulated pressure range: 5–180 psi (0.3–12.4 bar, 0.03–1.24 MPa)
• Compatible with catalyst and waterborne materials
• Compact and lightweight design for space savings and reduced payload
• Tungsten and carbide materials for low wear and long life
• PTFE/Elastomer hybrid diaphragm for accurate responsiveness and durability
• Manual operation with gauge for easy monitoring

Applications:
Used in small circulation systems to maintain consistent pressure, allowing operators to trigger guns, valves, and other flow controls without changing system pressure. Suitable for applications requiring reliable pressure control in industrial and maintenance environments.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the equipment.
• Reinstall the back pressure regulator in the fluid line as per the manual
• Always follow the pressure relief procedure before servicing
• Check ball and seat for wear by closing the ball valve upstream and observing gauge pressure; replace if pressure continues to drop
• Use appropriate thread sealant as recommended in the manual
• Regularly inspect for wear on ball and seat
• Relieve system pressure before maintenance
• Follow manufacturer’s service procedures for replacement of worn components