Motor-driven Dosing Pumps ST-D Membrane

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ETATRON D.S. S.P.A.

Rome, Italy

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The metering pumps ST-D series are driven by an electric motor, the dosage takes place thanks to a PTFE membrane. The ST-D series pumps make their robustness and reliability their main characteristic.

On request
ST-D pumps series can be equipped with:
Motorizations:
• Without motor
• UL/CSA motor certification
• Single-phase motor
• Self-ventilated motor
• ATEX motor
• Tropicalized motor
Hydraulic:
• NPT hydraulic connections
• Larger dimensions valves
Regulation and control by an external signal:
• Electric actuator (automatic adjustment of piston “run” by a 4-20mA signal)
• Inverter (automatic adjustment of motor speed by a 4-20mA signal)

Characteristics of Dosing Pump

Frequency: ranges from 60 to 120 strokes/min at 50Hz to 72 to 144 strokes/min at 60Hz
Die-cast aluminium housing shielded by epoxy/antiacid paint.
Maximum Flow Rate: 123 l/h at 50Hz to 148 l/h at 60Hz
Standard Power Supply: 230-400V phases 50/60Hz
Maximum Pressure: 14 bar
Valves: balls in ceramic or SS316L
Ball seats: FPM, EPDM, or NBR
Valve seats: PVC or PVDF
Membrane: PTFE; IP55 protection degree
F insulation class

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