Skip to Main Content
Expedited shipping may be delayed

Flojet N5100020B Self-Priming Diaphragm Pump N5100 Series - 2.5 GPM, 1/4in, Viton

Mfr. Model #:
KR Part #:
1.11 lbs
In Stock
Now Only!
A Flojet N5100 Series air operated duplex diaphragm pump. This model is CE listed, with Acetal housing, Viton diaphragm and check valve, with 3/8 inch Hose barb liquid ports and 1/4 inch hose barb air/gas ports. It is driven by a built in air motor.
Prep 65

Prop 65


Technical Specifications

Inlet Port: 1/4 inch
Max GPM: 2.5
Max PSI: 80
Max Temperature: 120 degrees F

Product Description

N5100 Series AODD Pump

This pump is an air-operated positive displacement double diaphragm pump that is designed for light general commercial and industrial applications. It is constructed from a selection of materials for handling a broad range of chemicals.
This air-operated diaphragm pump offers excellent self-priming capability, and may be mounted above the liquid level or the supply tank. This series has a variable capacity from zero to the maximum flow, and liquid pressure is regulated by supply air pressure. No bypass or pressure relief plumbing is necessary. It has a compact design with plug-in quick disconnect liquid and gas port fittings for easy installation.
  • Max Flow Rate: Up to 2.5 GPM
  • Air Supply Pressure: 20 to 80 PSI
  • Temperature Range; 40 - 120 degrees F
  • Self Priming - Up to 28ft (8.5m)
  • Air Inlet/Outlet: 1/4" Hose Barb  
  • Liquid Inlet/Outlet: 3/8" Hose Barb 
  • Compact Design with Plug-In Hose Connections
  • Pressure Relief or Bypass Plumbing Unnecessary

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm (For more information go to

Product Reviews

Frequently Asked Questions