Xylem Flow Control

Special Industrial / Carwash / Motor Operated Diaphragm Pumps

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Duplex II AC Demand Pump

Self-priming diaphragm pump with 110-240v AC electric motors. Flow rates from 4-8 litres/min (1-2.1 US gallons/min), pressure switch control or with a bypass, or both, capable of pressures up to 6.5bar (95psi)

Model No.: Duplex II AC Demand

Handles Water-like and Views Liquids Up to 250 cP
Chemical-resistant polypropylene pump head for long life
Latest techhnology internal check-valves for reliable self-priming
Choice of elastomers for maximum chemical compatibility
Internal bypass for excellent performance range
Optional pressure-switch control to run the pump only as needed
Available with long running heavy duty motor with built-in thermal overload
Available with commercial-duty DC monitor for continuous operation

Specifications
21 Models
Downloads

Voltage	115 & 230 (VAC)
Flow Rate	Up to 2.2 US Gallons/Min (8.6 Litres/Min)
Max. Pressure	up to 100psi (6.9bar)
Elastomers	EPDM, Santoprene, Nitrile or Viton
Port Type	3/8"

D3635E7011A

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	2.2 US Gallons/Min (8.6 Litres/Min)
Amp Draw	1.0 (amp)
Max. Pressure	100psi (6.9bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Valves

D7635I7011A

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	2.2 US Gallons/Min (8.6 Litres/Min)
Amp Draw	1.0 (amp)
Max. Pressure	100psi (6.9bar) Switch with External Bypass
Elastomers	Nitrile Diaphragm and Valves

D1635J7011A

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	2.2 US Gallons/Min (8.6 Litres/Min)
Amp Draw	1.0 (amp)
Max. Pressure	100psi (6.9bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Viton Valves

D1625E6011A

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.9 (amp)
Max. Pressure	80psi (5.4bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Valves

Dx625I6011

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.9 (amp)
Max. Pressure	80psi (5.4bar) Switch with External Bypass
Elastomers	Nitrile Diaphragm and Valves

D1625J6011A

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.9 (amp)
Max. Pressure	80psi (5.4bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Viton Valves

D1631H5011A

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.8 (amp)
Max. Pressure	60psi (4.1bar) Switch with External Bypass
Elastomers	Santoprene Diaphragm and EPDM Valves

Dx631I5011

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.8 (amp)
Max. Pressure	60psi (4.1bar) Switch with External Bypass
Elastomers	Nitrile Diaphragm and EPDM Valves

D1631F5011A

Duplex II AC Demand Pump

Voltage	115 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.8 (amp)
Max. Pressure	60psi (4.1bar) Switch with External Bypass
Elastomers	Santoprene Diaphragm and Viton Valves

DX735E7011

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	2.2 US Gallons/Min (8.6 Litres/Min)
Amp Draw	1.0 (amp)
Max. Pressure	100psi (6.9bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Valves

D1735J7011A

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	2.2 US Gallons/Min (8.6 Litres/Min)
Amp Draw	1.0 (amp)
Max. Pressure	100psi (6.9bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Viton Valves

DX725E6011

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.9 (amp)
Max. Pressure	80psi (5.4bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Valves

DX725J6011

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.9 (amp)
Max. Pressure	80psi (5.4bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Viton Valves

Dx731H5011

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.8 (amp)
Max. Pressure	60psi (4.1bar) Switch with External Bypass
Elastomers	Santoprene Diaphragm and EPDM Valves

Dx731F5011

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.8 (amp)
Max. Pressure	60psi (4.1bar) Switch with External Bypass
Elastomers	Santoprene Diaphragm and Viton Valves

D1735E7011ARL

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	2.2 US Gallons/Min (8.6 Litres/Min)
Amp Draw	1.0 (amp)
Max. Pressure	100psi (6.9bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Valves

D1735J7011ARL

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	2.2 US Gallons/Min (8.6 Litres/Min)
Amp Draw	1.0 (amp)
Max. Pressure	100psi (6.9bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Viton Valves

D1725E6011ARL

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.9 (amp)
Max. Pressure	80psi (5.4bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Valves

D1725J6011ARL

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.9 (amp)
Max. Pressure	80psi (5.4bar) Switch with External Bypass
Elastomers	EPDM Diaphragm and Viton Valves

Dx731H5011xRL

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.8 (amp)
Max. Pressure	60psi (4.1bar) Switch with External Bypass
Elastomers	Santoprene Diaphragm and EPDM Valves

Dx731F5011xRL

Duplex II AC Demand Pump

Voltage	230 (VAC)
Flow Rate	1.6 US Gallons/Min (6 Litres/Min)
Amp Draw	0.8 (amp)
Max. Pressure	60psi (4.1bar) Switch with External Bypass
Elastomers	Santoprene Diaphragm and Viton Valves

Technical Data Sheet

Duplex II (LP) Series Installation and Service Data

Duplex II (HP) Series Installation and Service Data