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The Grundfos DMX pumps are mechanical diaphragm dosing pumps. The strokes are generated by an eccentric, which moves the diaphragm by means of a spring-loaded plunger. The discharge stroke is activated by the eccentric and the suction stroke by the spring return. The DMX pumps are designed for capacities between 1.3 and 2 x 166 GPH and a maximum pressure up to 232 psi. The DMX pumps are fitted with a separation chamber. In the event of a diaphragm failure, the separation chamber prevents the pumped liquid from flooding the pump unit or other system components. It is a series of high-quality mechanically actuated diaphragm pumps suitable for many uses, such as drinking water treatment, wastewater treatment, and the pulp/paper and textile industries.
Product Type | Pump |
---|---|
Brand | Grundfos |
Inlet/Outlet Connection Type | MNPT |
Inlet Size | 1/2 in |
Motor Hz Rating | 50/60 |
Motor Type | Servomotor |
Motor Voltage | 120 VAC |
Mounting | Tank or Console |
Outlet Size | 1/2 in |
Material - Seal | PTFE |
Seal Type | Gasket |
Material - Balls | PTFE |
Max Flow | 1 gph (4 lph) |
Max Temperature | 68°F (20°C) |
Noise Level | 55 dB(A) |
Max Pressure | 10 bar |
Voltage | 120 V, 50/60 Hz |
Accuracy | +/-1.5% |
Enclosure | IP 65 |
Max Viscosity | 400 cps |
Drive Type | Worm/Wheel |
Speed | 29 stroke/min |
Signal Output | <350 Ohm at 0(4) to 20mA, 50VDC/75VAC (Pre-Empty Signal, Error Signal), 0.5A (Pre-Empty Signal, Error Signal), 200 ms (Stroke Signal) |
Control Variant | External Control (AR Control Unit) |
Fluid Type | Water |
Material - Dosing Head | PVDF |
Max Suction Lift | 16.4 ft |
Model | DMX 221 |
Operation Modes | Manual Speed Control, Pulse control (in ml/pulse), Analog Control (0/4 - 20 mA), Pulse-Based Batch Control |
Plug Type | USA, Canada |
Signal Input | 12V 5mA (Contact Signal, Remote On/Off, Tank-Empty Signal), 22 ohm at 0 - 20mA |
Stroke Volume | 2.2 cm3 |
Valve Type | Standard |
Displacement | Positive Displacement |