The GRACO 24B321 KIT is a replacement base coat pump designed for use with GRACO spray equipment, specifically the HTX 2030 sprayer. It is engineered to handle water-based materials, including those with aggregates up to 2.5 mm in size, and is intended for applying smooth to heavily aggregated textures such as those containing silica sand, perlite, vermiculite, and polystyrene. Key Features: Base coat pump replacement kit 24B321 Up to 1,000 psi (69 bar) Designed for GRACO HTX 2030 sprayer; compatible with water-based materials and aggregates up to 2.5 mm in longest dimension Pump runs only when on/off switch is in ON position and pump control is rotated clockwise away from OFF Pressure control limits sprayer to 1,000 psi, stopping pump when limit is reached Flow rate is adjustable by engine speed and pump control knob Supports smooth, medium, coarse, and extra coarse textures Reliable for continuous operation with minimal pulsation at highest flow setting Applications:Used for applying water-based base coat materials with aggregates up to 2.5 mm in size, suitable for smooth to heavily aggregated textures in construction and finishing applications. Installation Notes: Using genuine GRACO replacement parts ensures optimal performance, reliability, and safety of the spray equipment. Ensure the sprayer is powered off before installation Follow the equipment manual for step-by-step installation instructions Check compatibility with your specific GRACO sprayer model After installation, test the pump at various flow settings to ensure proper operation Regularly inspect and maintain the pump according to manufacturer guidelines