The GRACO 648003 HUSKY PUMP, 1050A-E, SP/SP/SP/4A is an industrial air-operated double diaphragm pump designed for reliable fluid transfer in demanding environments. The pump features a Santoprene ball material and is engineered for robust performance in applications such as oil, waste oil, and other industrial fluids. Its construction is tailored for durability and efficiency, making it suitable for use within GRACO equipment for fluid dispensing and reclamation.

Key Features:

• Air-operated double diaphragm pump
• 1050A-E, SP/SP/SP/4A
• Industrial-grade materials (Santoprene ball, aluminum or other options depending on configuration)
• Up to 50 GPM (varies by configuration; some models specify 38 GPM for UL-listed fuel dispense applications)
• Maximum fluid working pressure: 100–125 psi (varies by configuration; some models specify 50 psi for UL-listed fuel dispense)
• Oil, waste oil, and other industrial fluids; compatible with GRACO fluid dispensing and reclamation systems
• UL-listed for certain configurations (e.g., fuel dispense)
• Stall-free air valve for reliable operation
• One-piece center for longer diaphragm life
• 30% more efficient with 20% more fluid flow (in some models)
• Handles solids up to 1/8 in. (3.2 mm)
• Bolted design for even sealing and easy maintenance
• Available in various materials (aluminum, stainless steel, Hastelloy, PVDF, polypropylene, conductive polypropylene)

Applications:
Industrial fluid transfer, oil and waste oil dispensing, fluid reclamation, and other demanding applications in mining, agriculture, and manufacturing.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump and associated equipment.
• Ensure proper alignment of fluid and air connections
• Use recommended installation kits for wall mounting or drum-style applications
• Follow manufacturer guidelines for air pressure (typically 20–100 psi)
• Regularly inspect diaphragms and seals for wear
• Maintain recommended cycle rates for continuous use (typically 93–140 CPM for continuous use, 20 CPM for circulation systems)