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N305M | Bronze Close Coupled Flexible Impeller Pump

The N305M range offers portable, high-performance flexible impeller pumps constructed from durable bronze, complete with a sturdy all-stainless-steel shaft. These versatile pumps accommodate both AC and DC motors, ensuring they're compatible with a variety of power sources.

Outstanding Features & Benefits: 

  • Corrosion-Resistant Bronze Build: Your pump stays robust in the harshest of environments. 

  • Easy Maintenance: Impellers and cams can be replaced quickly, minimizing downtime. 

  • Flexible Operation: Standard neoprene impellers are included, with nitrile options available for diverse applications. 

  • Reversible Wear Plate & Nitrile Mechanical Seal: These elements enhance the pump's durability and longevity. 

  • Adaptable Placement: Operate the pump in any position to suit your spatial requirements. 

  • Portable Convenience: Easily transport your pump wherever it's needed. 

  • Secure Sealing: A nitrile O-ring seal eliminates the common issues associated with gaskets. 

  • Drive Efficiency: Directly driven by an electric motor shaft with an aluminum adapter for secure connection. Reversible motor rotation is possible by switching the supply leads, which also reverses the pump ports. 

  • Fluid Compatibility: Ideal for pumping fresh and saltwater solutions, and mild chemicals. Avoid using with harsh solvents or acids and ensure to flush with fresh water after use to maintain optimal condition. 

  • Temperature Resilience: Operates within a temperature range of 40°F to 180°F. To prevent freezing, drain the pump and use suitable anti-freeze compounds. 

  • Impressive Suction Lift: Achieve up to 15 feet of suction lift when the impeller is wet, with airtight suction lines for effective self-priming. A foot valve is recommended at the start of the suction line. 

  • Easy Impeller Replacement: To maintain peak performance, replace the impeller if it shows signs of wear or damage. The process is simple: remove the cover screws, extract the impeller, and insert a new one, aligning it properly with the shaft key. For long-term storage, remove the impeller to prevent blade deformation. 

Performance Table

Feet Hd

10

20

40

60

80

Model

Voltage

HP

Pressure

4.3

8.7

17.3

26.0

34.6

N305M C81

12 VDC

1/4

Flow (GPM/LPM)

7.1

6.7*

Speed (RPM)

1050

1040*

Current (AMPS)

8.4

9.2

N305M C82

24 VDC

1/4

Flow (GPM/LPM)

15.3

14.5

11.9

6.4

2.0*

Speed (RPM)

2200

2190

2160

2140

2120*

Current (AMPS)

9.5

10.3

12.4

14.8

17.1*

N305M-08 C84

12 VDC

1/4

Flow (GPM/LPM)

13.8

13.0

9.7*

Speed (RPM)

1950

1930

1880*

Current (AMPS)

16.0

17.8

21.9*

N305M-08 F93

24 VDC

1/3

Flow (GPM/LPM)

13.8

12.9

9.6

4.7*

Speed (RPM)

1920

1920

1910

1860*

Current (AMPS)

8.3

9.3

11.1

13.9

N305M-08 F50

115/230 VAC TEFC

1/3

Flow (GPM/LPM)

12.9

12.1

8.9

4.2*

Speed (RPM)

1780

1780

1780

1770*

N305M-08 F97

230/460 VAC TEFC

1/3

Flow (GPM/LPM)

12.9

12.1

8.9

4.2*

Speed (RPM)

1780

1780

1780

1770*

  • Water 70°F (neoprene impeller)
  • *Maximum recommended operating point
Exploded View N305M

 

Item

Part Name

Quantity

OBN305M

OBN305M-C81

OBN305M-C82

OBN305M-02

OBN305M-08C74

OBN305M-08F93

OBN305M-08F50

OBN305M-08F97

1

Body

Qty. 1

OB8318-1

OB8318-1

OB8318-1

OB8318-1

OB8318-1

OB8318-1

OB8318-1

OB8318-1

2

Cover

Qty. 1

OB6736

OB6736

OB6736

OB6736

OB6736

OB6736

OB6736

OB6736

3*

Impeller

Qty. 1

OB6620

OB6620

OB6620

OB8647

OB6620

OB6620

OB6620

OB6620

4*

O-Ring

Qty. 1

OB8231

OB8231

OB8231

OB8231

OB8231

OB8231

OB8231

OB8231

5

Screw

Qty. 4

OB5504

OB5504

OB5504

OB5504

OB5504

OB5504

OB5504

OB5504

6

Screw

Qty. 1

OB5595

OB5595

OB5595

OB5595

OB5595

OB5595

OB5595

OB5595

7*

Seal

Qty. 1

OB32230

OB32230

OB32230

OB32230

OB32230

OB32230

OB32230

OB32230

8

Shaft

Qty. 1

OB8319

OB8319

OB8319

OB8319

OB8319

OB8319

OB8319

OB8319

9

Key

Qty. 1

OB6739

OB6739

OB6739

OB6739

OB6739

OB6739

OB6739

OB6739

10

Key

Qty. 1

OB6845

OB6845

OB6845

OB6845

OB6845

OB6845

OB6845

OB6845

11

Collar

Qty. 1

OB7991

OB7991

OB7991

OB7991

OB7991

OB7991

OB7991

OB7991

12

Adapter

Qty. 1

OB7990

OB7990

OB7990

OB7990

OB7459

OB7459

OB7459

OB7459

13

Screw

Qty. 4

OB5916

OB5916

OB5916

OB5916

OB5411

OB5411

OB5411

OB5411

14

Washer

Qty. 1

OB6631

OB6631

OB6631

OB6631

OB6631

OB6631

OB6631

OB6631

15

Motor

Qty. 1

N/A

OB8295

OB8295

N/A

OB2924

OB3073

OB8458

OB8456

-

Repair Kit

-

OB10704

OB10704

OB10704

OB12187

OB10704

OB10704

OB10704

OB10704

* 3, 4 & 7 Items are included in Repair Kits

 

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