The GRACO 649312 is an air-operated double diaphragm pump constructed primarily from polypropylene, with stainless steel seats, PTFE balls, and PTFE overmold diaphragms. It is designed for reliable transfer of fluids in industrial environments, offering chemical resistance and durability for demanding applications.

Key Features:

• Air-operated double diaphragm pump
• Husky 1050, 1 in. (varies by configuration)
• Condensed polypropylene center section, end flange, stainless steel seats, PTFE balls, PTFE overmold diaphragm
• Maximum free-flow delivery: 189 l/min (50 gpm)
• Maximum fluid working pressure: 7 bar (100 psi) for standard polypropylene models; some metal models up to 8.6 bar (125 psi), but this part is polypropylene
• Compatible with a wide range of fluids, including water, antifreeze, fuels, and chemicals, depending on wetted material selection
• UL listed (varies by configuration)
• Stall-free, low pulsation air valve for smooth and rapid changeover
• Optional DataTrak™ monitoring for advanced diagnostics and runaway protection
• Chemical resistance due to polypropylene and PTFE components
• Reliable, low-maintenance design
• Handles solids up to 3.2 mm (1/8 in) in size

Applications:
Industrial fluid transfer, including water, antifreeze, fuel, and chemical handling in mining, agriculture, manufacturing, and vehicle service environments

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump system.
• Ensure proper alignment of all components during assembly
• Use appropriate gaskets and seals for leak-free operation
• Follow torque specifications for all fasteners
• Verify compatibility of wetted materials with the intended fluid
• Regularly inspect diaphragms and seats for wear and replace as needed
• Periodically check for leaks and unusual noises
• Replace diaphragms and balls as recommended by the manufacturer
• Clean pump internals if handling abrasive or viscous fluids
• Monitor air supply pressure to avoid over-pressurization