Graco Husky 1590 1.5" Air-Operated Double Diaphragm Pump - DT4377

$4,888.55 $4,073.79
Stainless Steel Fluid Section, Stainless Steel Standard Air Valve Centre Section, Stainless Steel (316) Seats, Buna Balls, Buna Diaphragms, PTFE O-Rings

1.5 Inch Positive Displacement Double Diaphragm Pump

The Husky 1590 has a 1.5 inch (38.1 mm) connection and is available in aluminum, stainless steel and polypropylene.

The Husky 1590 air-operated diaphragm pump features a patented, high-reliability closed center air valve that is online serviceable and an epoxy-coated air section for tough environmental conditions.


  • 1.5 in. (38.1 mm) ANSI end-porting
  • High flow - 100 gpm (378 lpm) in a compact, portable size
  • Fluid pressure to 120 psi (8.4 bar, 0.84 MPa)
  • Lube-free operation
  • Available in polypropylene, aluminum and stainless steel
  • 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
  • Expanded material offering to handle endless applications
  • Fewer parts than industry peers, the air valve is externally accessible so it can be serviced quickly and easily without uninstalling the diaphragm pump
  • Offered in ATEX configuration.



Maximum Fluid Flow:100 gpm (378.5 l/min)
Maximum Fluid Discharge Pressure: 120 psi (8,4 bars, 0,84 MPa)
Maximum Size Pumpable Solids: 3/16 in (4.8 mm)
Fluid Displacement Per Cycle:0.5 g (1.9 litres)
More Information
Max. Flow Rate (l/min) 378.5
Max. Input Pressure (psi) 120
Max. Output Pressure (psi) 120
Fluid to Air Ratio 1:1
Air Inlet Size 1/2" NPT(F)
Pump Inlet/ Outlet Size 1.5" NPT(F)
Max. Pump Speed 200 cpm
Fluid Section Material Stainless Steel
Centre Section Material Stainless Steel Standard Air Valve
Porting Stainless Steel Standard Porting (NPT)
Seats Stainless Steel (316)
Balls Buna
Diaphragms Buna
Manifold O-Rings PTFE
Certification Required ATEX