About this item
The 21-Series Pumps are compact and designed for a wide range of applications including liquid transfer, spraying, circulation, filtration and dispensing
The 21-series of diaphragm pumps are self-priming and can be run dry without harm. It provides up to 1.2 gallons per minute
Built-in 35 PSI pressure switch for automatic stop/start
Self-priming allows it to be mounted above tank; able to run dry
1.2 gallons per minute (4.2 liters per minute) Built-in thermal protector; 3/8-inch hose barb ports
Specification
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Type
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2 Chamber positive displacement diaphragm pump, self priming, capable of being run dry
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Control Type
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Pressure switch
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Max Recommended Temperature
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60° C (140° F)
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Priming Capabilities
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4 feet (1.2 m) suction lift
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Re-start Pressure
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Shut-off Pressure 35 PSI: 25 PSI ±5 PSI (±0.3 bar)
Shut-off Pressure 40 PSI: 30 PSI ±5 PSI (±0.3 bar)
Shut-offPressure 70 PSI: 56 PSI ±5 PSI (±0.3 bar)
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Inlet/Outlet Ports
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3/8" (10 mm) hose barb
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Weight
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1.3 lbs (0.6 kg)
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Leads
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18 AWG, 14" (35 cm) long with 2-Pin connector / Leads
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Duty Cycle
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Intermittent
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Model
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Voltage
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Open flow
(GPM/LPM)
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Max draw
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Shut-off pressure
(PSI / BAR)
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Ports
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Wire connections
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NMDP21-G10-40-12
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12V
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1.0 / 3.8
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4A
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40 / 2.8
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3/8"Barb
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2-pin / Lead
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NMDP21-G10-40-24
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24V
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1.0 / 3.8
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2A
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40 / 2.8
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3/8"Barb
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2-pin / Lead
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NMDP21-G11-70-12
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12V
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1.1 / 4.0
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4A
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70 / 4.8
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3/8"Barb
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2-pin / Lead
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NMDP21-G11-70-24
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24V
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1.1 / 4.0
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2A
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70 / 4.8
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3/8"Barb
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2-pin / Lead
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NMDP21-G12-35-12
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12V
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1.2 / 4.3
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4A
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45 / 3.1
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3/8"Barb
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2-pin / Lead
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NMDP21-G12-35-24
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24V
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1.2 / 4.3
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2A
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45 / 3.1
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3/8"Barb
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2-pin / Lead
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Dimensions
