The GRACO 133373 is a pump section kit designed for on-demand operation, constructed primarily from acetal (AC) material. This original part is essential for ensuring smooth and efficient performance within GRACO equipment, specifically in systems requiring reliable fluid delivery and pressure management. Key Features: Pump section kit 133373 Acetal (AC) seats, PTFE balls, PTFE diaphragm Compatible with GRACO on-demand pump systems Designed for reliable on-demand operation Ease of maintenance due to kit format High reliability with original GRACO components Applications:Used in GRACO on-demand pump systems for fluid transfer and pressure management in industrial, lubrication, and maintenance applications. Installation Notes: Using genuine GRACO parts ensures optimal performance, longevity, and safety of the equipment. Follow GRACO equipment manual for installation Ensure all components are clean and free from debris before assembly Inspect PTFE balls and diaphragm for wear or damage prior to installation Regularly inspect and replace worn components as part of routine maintenance Use only GRACO-approved replacement parts for repairs