The GRACO DB4525 Husky 1590 is an air-operated double diaphragm pump designed for industrial fluid transfer. It features a stainless steel fluid section, aluminum center section, TPE (thermoplastic elastomer) seats and diaphragm, and AC (aluminum ceramic) balls. This pump is engineered for reliable, long-lasting performance in demanding environments, suitable for handling a wide range of fluids including water, wastewater, oils, and chemicals.

Key Features:

• Air-operated double diaphragm pump
• Husky 1590, 1-1/2 in. (38.1 mm) NPT
• Stainless steel fluid section, aluminum center section, TPE seats and diaphragm, AC balls
• Maximum free flow delivery: 100 gpm (378.5 lpm)
• Maximum fluid working pressure: 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of fluids including water, wastewater, oils, chemicals, antifreeze, detergents, motor oil, hydraulic fluid, and cutting oil
• Patented, high-reliability closed center air valve that is online serviceable
• Epoxy-coated air section for tough environmental conditions
• Up to 5 times longer diaphragm life compared to other air-operated diaphragm pumps in its class
• Fewer parts than industry peers, air valve externally accessible for quick and easy service
• No seals to leak or fail
• Quiet running (less than 85 dBa) with remote muffler capability
• Expanded material offering for diverse applications

Applications:
Industrial fluid transfer, including water and wastewater, oils, chemicals, antifreeze, detergents, motor oil, hydraulic fluid, and cutting oil

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump efficiency and longevity.
• Ensure proper alignment and secure mounting of the pump
• Use appropriate thread sealant for NPT connections
• Check for correct air supply and pressure settings before operation
• Inspect diaphragms and balls regularly for wear and replace as needed
• Follow manufacturer’s guidelines for maintenance intervals and procedures