The GRACO 23965-00 is a trigger piston air switch assembly designed for use in the Probler P2 Dispense Gun. It is a critical component that enables responsive trigger action and reliable operation within GRACO’s high-output spray equipment for polyurethane foam and polyurea applications. The material is not specified, but it is engineered for durability and consistent performance in demanding industrial environments.

Key Features:

• Trigger Piston Air Switch Assembly
• Probler P2 / GC1918
• GRACO Probler P2 Dispense Gun
• Responsive trigger action
• Double piston design for high triggering force (over 300 lbs / 136 kg)
• Lightweight and ergonomic for easy maneuverability
• Reduces maintenance and increases spraying uptime
• Anti-crossover design virtually eliminates material entering the air piston
• Easy-to-replace mix chamber insert for quick maintenance

Applications:
Used in high-output spray applications for polyurethane foam and polyurea, suitable for industrial, construction, and insulation projects.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety of the Probler P2 Dispense Gun. Non-genuine parts may compromise equipment function and longevity.
• Refer to the Probler P2 user manual for detailed disassembly and reassembly instructions
• Ensure all O-rings and seals are in good condition before installation
• Clean the assembly area to prevent contamination
• Test trigger action and air flow after installation to confirm proper operation
• Regularly inspect the trigger piston for wear or damage
• Replace O-rings and seals as needed during routine maintenance
• Keep the assembly clean and free of debris
• Follow manufacturer-recommended maintenance schedules