Air-operated double diaphragm pumps can move anything from fine chemicals
(gentle, non-shearing action), to abrasive and viscous slurries (no
close-fitting parts, low internal velocities), and almost any other product
that can move. A few of the thousands of products now being pumped:
- Paints & solvents
- Pigments
- Resins
- Construction water & waste
- Beer & wine
- Mine tailings
- Chemicals
- Oils & lubricants
- Glues & adhesives
- Dyes
|
- Foods
- Tanker loading/unloading
- Marine barges
- Ceramic slips, slurries & glazes
- Latex
- Driller's mud
- Inks & printing liquors
- Against filter press
- Low density powders
- Handling Barrels, Jerry Cans, Carbouys.
|
| Air
Operated Double Diaphragm Pumps |
The air valve directs pressurized air to the back side of diaphragm 1.
The compressed air is applied directly to the liquid column separately by
elastometric diaphragms. The diaphragm acts as a separation membrane
between the compressed air and the liquid. Driving the diaphragm with
air instead of the shaft balances the load and removes mechanical stress
from the diaphragm, dramatically extending diaphragm life. The
compressed air moves the diaphragm away from the center block of the pump.
The opposite diaphragm is pulled in by the shaft connected to the
pressurized diaphragm. Diaphragm 2 is now on its air exhaust stroke;
air behind the diaphragm has been forced out to atmosphere through the
exhaust port of the pump. The movement of diaphragm 2 toward the
center block of the pump creates a vacuum within chamber 2.
Atmospheric pressure forces fluid into the inlet manifold forcing the inlet
valve ball off its seat. Liquid is free to move past the inlet valve
ball and fill the liquid chamber.
| Why
these Pumps Work Best |
The heart of the Double Acting Air Operated Diaphragm Pump is the air valve
which shifts the air supply to both diaphragms alternately with complete
reliability under all conditions of head and flow. The air valve performs
this function with a simplicity in design and serviceability.
| Exclusive
Air Valve Assembly |
Developed
NON-STALL Shaft block and air valve
assembly for trouble free operation even if moist air enters into the shaft
block.
Top Performance in the most rugged
pumping jobs
Pumps give dependable, top performance in the most rugged pumping jobs.
Up to 50% solids and over 30 m. are no problem for the Pump.
Material of construction
- Polypropylene
- Cast Iron
- Cast Aluminium
- S. S. 316
- Teflon (PTFE)
Diaphragms & NRV Balls are offered in different elastomers.
Neoprene / EPDM / Nitrile / PTFE / Hypalon
Accessories: 1) F.R.L : Air Filter, Regulator and
Lubricator are required in Air line to provide clean, moist free air at
constant pressure to the pump. FRL also helps to lubricate air valve
assembly (connecting shaft and piston). 2) Needle valve in brass.
Size available
1/
4",
3/
8",
1/
2".
| POLYPROPYLENE |
AOD - 20 |
AOD - 25 |
AOD - 50 |
| HEIGHT : (in mm) |
410 |
635 |
787 |
| WIDTH : (in mm) |
215 |
406 |
483 |
| DEPTH :(in mm) |
280 |
304 |
368 |
| WEIGHT : (in kg.) |
9.5 |
18 |
30 |
| AIR INLET : (in BSP) |
1/4" |
3/8" |
1/2" |
| SUCTION : (in mm) |
25 |
40 |
50 |
| DISCHARGE : (in mm) |
25 |
40 |
50 |
| SUCTION LIFT : (in m.) |
3 |
3 |
4 |
| Max. Solid Size. (in mm) |
5 |
10 |
15 |
