Graco Inc.

Husky 205 Double Diaphragm Pump

0.25 inch Positive Displacement Double Diaphragm Pump

1/4 inch (6.3 mm) connection available in polypropylene, acetal and PVDF

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This 1/4-inch positive displacement double diaphragm pump offers true-formed PTFE and Santoprene diaphragms for enhanced performance and is available in polypropylene, groundable acetal and PVDF.

  • 1/4-in (6.4 mm) end-porting double diaphragm pump
  • Spring check valves for superior priming in any mounting configuration
  • Remote control option using an external controller

View values in metric units. View values in U.S. units.
Husky 205 Air-Operated Diaphragm Pump
Maximum fluid working pressure
100 psi
7 bar, 0.7 MPa
Maximum/minimum air pressure
100 psi/20 psi
7 bar, 0.7 MPa/1.4 bar, 0.14 MPa
Maximum fluid flow
5.0 gpm
18.9 lpm
Maximum pump speed
320 (dry) cpm, 250 (wet) cpm
320 (dry) cpm, 250 (wet) cpm
Volume per stroke*
0.006 g
23 cc
Volume per cycle*
0.012 g
46 cc
Maximum suction lift dry
8 to 10 ft
2.5 to 3 m
Maximum size pumpable solids
0.06 in
1.5 mm
Maximum operating temperature
180°F
82°C
Maximum air consumption
9.0 scfm
3
Air inlet size**
1/4 npt(f)
1/4 bsp(f)
Fluid inlet size**
1/4 npt(f)
1/4 bsp(f)
Fluid outlet size**
1/4 npt(f)
1/4 bsp(f)
Air exhaust port size**
1/4 npt(f)
1/4 bsp(f)
Weight
Polypropylene Pump
2 lb
0.9 kg
Acetal Pump
2.5 lb
1.1 kg
PVDF Pump
2.8 lb
1.3 kg
Wetted parts (housings, diaphragms, check valves)
Polypropylene Pump
Glass-filled polypropylene, PTFE, polypropylene
Glass-filled polypropylene, PTFE, polypropylene
Acetal Pump
Acetal with SST fibers, PTFE, acetal
Acetal with SST fibers, PTFE, acetal
PVDF Pump
PVDF, PTFE, PVDF
PVDF, PTFE, PVDF
Sound power level (pressure) (per ANSI STD S12.1)
at 100 psi (7 bar, 0.7 MPa)
75.5 dBa
75.5 dBa
at 70 psi (4.9 bar, 0.49 MPa)
72.0 dBa
72.0 dBa
at 40 psi (2.8 bar, 0.28 MPa)
68.2 dBa
68.2 dBa
Sound power level (intensity) (per ANSI STD S12.1)
at 100 psi (07 bar, .7 MPa)
84.5 dBa
84.5 dBa
at 70 psi (4.9 bar, 0.49 MPa)
81.1 dBa
81.1 dBa
at 40 psi (2.8 bar, 0.28 MPa)
76.6 dBa
76.6 dBa
** Hybrid thread allows for either 1/4 npt or 1/4 bsp fitting.