The GRACO 649021 Husky 1050 PP (NPT) Pump is an air-operated double diaphragm pump featuring a polypropylene (PP) center section, center flange, and SP (Santoprene) seats, balls, and diaphragm. It is designed for reliable, efficient transfer of a wide range of fluids, including those containing solids, in industrial and maintenance applications.

Key Features:

• Air-operated double diaphragm pump
• Husky 1050, 1" NPT (nominal pipe size)
• Polypropylene (PP) center section, SP (Santoprene) seats, balls, and diaphragm
• Maximum free-flow delivery: 189 l/min (50 gpm)
• Maximum fluid working pressure: 8.6 bar (125 psi, 0.86 MPa)
• Compatible with a wide range of fluids, including those with solids up to 3.2 mm (1/8 in)
• Stall-free, low pulsation air valve for smooth and rapid changeover
• One-piece center section eliminates leaks and reduces maintenance
• Bolted joint design for even sealing pressure and leak-free operation
• Externally serviceable spring-loaded pilot valves for faster changeover and reduced pulsation
• Modular air valve for easy maintenance
• Longer diaphragm life (up to 5x longer than competitors)
• High chemical resistance due to polypropylene construction

Applications:
Ideal for transferring fluids containing solids, chemicals, and abrasive materials in industries such as mining, agriculture, manufacturing, and maintenance. Suitable for use with alkalis, acids, organic solvents, and degreasing agents.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump efficiency and longevity.
• Ensure proper alignment of pump components during assembly
• Use recommended tools and torque specifications for bolted joints
• Check for leaks after installation and during initial operation
• Follow GRACO’s recommended maintenance schedule for diaphragm and valve inspection
• Use compatible fluids and avoid exceeding maximum pressure and temperature limits