The GRACO 651965 HUSKY PUMP,1050S-E,SP/SP/SP/4A is an industrial-grade, air-operated double diaphragm pump designed for reliable transfer of a wide range of fluids. It features a robust construction with key components made from materials such as Santoprene (ball material), and is intended for use in demanding environments where smooth, low-pulsation fluid transfer is required[2][3][5].

Key Features:

• Pneumatic Diaphragm Pump
• Husky 1050S-E
• Industrial-grade, with wetted parts including aluminum, polyester elastomer, acetal, and TPE (varies by configuration; ball material for this part is Santoprene)[2][5]
• Up to 50 GPM (varies by configuration; not all models may reach this rate)[5]
• Maximum fluid pressure: 100–125 psi (0.7–0.86 MPa) depending on configuration[3][5]
• Industrial fluids such as antifreeze, detergents, motor oil, hydraulic fluid, cutting oil, water, and wastewater[5]
• UL listed[3]
• Stall-free, low-pulsation air valve for smooth and rapid changeover
• Reliable, robust construction for demanding environments
• Ease of maintenance and serviceability
• Suitable for continuous duty cycles

Applications:
Industrial fluid transfer, including antifreeze, detergents, motor oil, hydraulic fluid, cutting oil, water, and wastewater[5]

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper alignment and secure mounting
• Use recommended thread sealants and gaskets
• Follow manufacturer guidelines for air supply and fluid connections
• Regularly inspect diaphragms, balls, and seals for wear and replace as needed
• Periodically check for leaks and tighten connections
• Replace worn or damaged components promptly
• Keep air supply clean and dry to prevent valve issues
• Refer to the manual for lubrication and inspection schedules