4
855 819 R. 03/12
Samson Corporation • One Samson Way • N.C. 28778 Swannanoa • Phone: 00 1 8286868511 • Fax: 00 1 8286868533
2012_03_06-17:30
Description
Directflo concept
Air operated double diaphragm pumps are air-powered, reciprocating positive displacement pumps with two pumping chambers. Two diaphragms,
centrally located in the chambers, separate the compressed air (dry side) from the fluid being pumped (wet side). A shaft transmits the reciprocating
motion of one diaphragm to the other. A directional valve alternatively distributes the air from one chamber to the other; thus a reciprocating
movement of the diaphragms is created. With each stroke, fluid is discharged by one of the diaphragms whilst the opposite diaphragm sucks new
fluid into the expanding chamber. Check valves, two on the discharge side and two on the suction side, control and direct the fluid flow.
Capacity curves
DF100
Temperature working range
Material
Temperature range
PTFE
5 ºC - 105 ºC / 41 ºF - 221 ºF
NBR
10 ºC - 80 ºC / 50 ºF - 176 ºF
Acetal
10 ºC - 90 ºC / 50 ºF - 194 ºF
Hytrel®
10 ºC - 90 ºC / 50 ºF - 194 ºF
Neopreno
-18 ºC - 93 ºC / 0 ºF - 200 ºF
SANTROPRENE
TM
-29 ºC - 135 ºC / -20 ºF - 275 ºF
Viton®
-10 ºC - 120 ºC / -4 ºF - 248 ºF
Tested at room temperature, with water and flooded pump with 3.5 inches, (80 mm), positive suction head.
100 psi
87 psi
72.5 psi
58 psi
43.5 psi
87 psi
100 psi
58 psi
72.5 psi
43.5 psi
