3
R. 09/20 855 867
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
2020_09_24-12:30
EN
In this document you will find warnings and cautions for installation, use and maintenance of the Direcflo pumps.
• This equipment is for professional use only.
• Do not degrade the integrity of the equipment. Use only original
replacement components from Samoa Industrial, S.A.
• Fluids not suitable for the pump can cause damage to the pump unit and
involve risk of serious personal injury.
• Always consult Samoa Industrial, S.A. if you have any questions about the
compatibility within the fluids and the pump materials, including
elastomers.
• Install and use the pump according to all local and national regulations
and abide all health and safety laws or legislation.
• The pump can produce fluid pressures equal to the air supply pressure. Do
not exceed the maximum allowable pressure of 115 psi (8 bar) air supply.
The total hydraulic pressure (differential pr system) should never
exceed 115 psi (8 bar).
• Never use a pump that leaks, that is damaged, that is corroded or
otherwise it may lack the capacity to contain the fluid.
• Frequently check that the bolts on the diaphragm cover of the pump are
torqued correctly.
• Do not use a model with aluminium wetted surfaces to pump fluids for
human consumption, there is a possibility of trace contamination of lead.
• Danger of explosion if used 1,1,1-trichloroethane, methylene chloride or
other halogenated hydrocarbon solvents with aluminium wetted materials.
It could cause serious injury and property damage.
• Inside the pump, diaphragms separate the fluid that is being pumped
from the air supply. If a diaphragm breaks, the fluid can leak out of the air
exhaust and contaminate the environment.
• When handling hazardous fluids, always route the air exhaust into a
suitable container and locate it in a safe place.
• When the fluid source level is situated higher than the pump, (flooded
suction), the outlet tank must be at a higher level than the product to
prevent spills.
• For pumps handling hazardous fluids that are a danger to humans or to
the environment, install a suitable container surrounding the pump to
prevent any leaks or spills.
• Ensure that the operators of this equipment are trained on the operation
and limitations. Use safety equipment as safety goggles or other
equipment required.
WARNING: ¡CAREFULLY READ THE INSTRUCTIONS AND WARNINGS BEFORE OPERATING THE EQUIPMENT!
WARNINGS AND CAUTIONS
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.
MATERIAL
TEMPERATURE RANGE
PTFE
41 ºF - 221 ºF / 5 ºC - 105 ºC
NBR
50 ºF - 176 ºF / 10 ºC - 80 ºC
Acetal
50 ºF - 194 ºF / 10 ºC - 90 ºC
Hytrel
®
50 ºF - 194 ºF / 10 ºC - 90 ºC
Neoprene
®
0 ºF - 200 ºF / -18 ºC - 93 ºC
Santoprene
®
-20 ºF - 275 ºF / -29 ºC - 135 ºC
Polypropylene
®
50 ºF - 176 ºF / 10 ºC - 80 ºC
DESCRIPTION
TECHNICAL DATA
DF50 / 552 051
RATIO
1:1
MAXIMUM FREE FLOW
13.21 gal/min (50 l/min)
DELIVERY PER STROKE (APROX.)
3.38 oz (0,1 l)
AIR PRESSURE OPERATING RANGE
22 to 115 psi (1,5 to 8 bar)
SOLID IN SUSPENSION MAX SIZE
0.12 in (3 mm)
MAXIMUM SUCTION HEAD
19.69 ft (6 m) dry, 26.25 ft (8 m) wet
WEIGHT
7.72 lb (3,5 kg) Stainless steel body
FLUID INLET (SINGLE INLET)
1/2" BSP - NPT (F) and flange
FLUID INLET (DOUBLE INLET)
2 x 3/8" BSP - NPT (F)
FLUID OUTLET
1/2" BSP - NPT (F) and flange
AIR INLET
3/8" NPSM (F)
WETTED PART MATERIALS
AISI316 Stainless steel, PTFE, Buna-N and
Hastelloy-C. Materials meet FDA requeirements
NOISE LEVEL
80 dB
TEMPERATURE RANGE
32 - 158 ºF (0 - 70 ºC)
WARNING: This symbol aware that there is a danger of serious bodily injury or death if you ignore the warning described.
CAUTION: This symbol aware that there is a danger of personal injury or property damage if you ignore the caution described.
