The GRACO 651985 HUSKY PUMP, 1050S-E, SS/SS/PO/4B is an industrial-grade, air-operated double diaphragm pump constructed primarily from stainless steel. It is designed for reliable, efficient transfer of fluids in demanding environments, including those requiring corrosion resistance and durability. The pump is suitable for handling a variety of industrial fluids and is engineered for continuous, heavy-duty operation[1][2][5].

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1050S-E, 1" connection
• Stainless steel (SS/SS/PO/4B)
• 50 GPM (189 LPM)
• Maximum fluid working pressure: 125 psi (8.6 bar, 0.86 MPa)
• Industrial fluids, compatible with a wide range of chemicals and liquids
• UL listed (for some Husky 1050 models; confirm for this specific part)
• Stall-free, low pulsation air valve for smooth operation
• Bolted design for even sealing and easy maintenance
• Reliable, heavy-duty construction for continuous use
• Handles solids up to 1/8 inch (3.2 mm) in size
• Maximum suction lift: 16 ft (4.9 m) dry, 29 ft (8.8 m) wet
• Maximum pump speed: 280 cycles per minute

Applications:
Industrial fluid transfer, chemical processing, wastewater management, mining, agriculture, and other demanding environments requiring robust, corrosion-resistant pumping solutions[2][5].

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump efficiency and longevity.
• Ensure all connections are tight and leak-free
• Use appropriate thread sealant for NPT connections
• Verify air supply is clean and dry to prevent valve and diaphragm damage
• Follow manufacturer’s recommended maintenance schedule
• Inspect diaphragms and balls regularly for wear and replace as needed