Skip to Main Content

Flojet N5100050A Air Operated Diaphragm Pump N5100 Series - 2.5 GPM, 3/8 in, Geolist

Mfr. Model #:
KR Part #:
1.40 lbs
In Stock
Now Only!
A Flojet N5100 Series AODD Pump with Acetal housing and a Buna Geolast diaphragm and check valve. This model has 3/8 inch hose barb liquid ports, 1/4 inch hose barb air/gas ports and is driven by a built in air motor.
Prep 65

Prop 65


Technical Specifications

Max GPM: 2.5
Max PSI: 80
Max Temperature: 120 degrees F
Inlet Port: 3/8 inch

Product Description

2.5 GPM Flojet Pump

This air-operated positive displacement double diaphragm pump is designed for light general commercial and industrial applications, and is constructed from a selection of materials for handling a broad range of chemicals. It offers excellent self-priming capability, and can be located above the liquid level or the supply tank. A suction-side foot valve is recommended for best operation. It 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.
  • Maximum Flow Rate: 2.5 GPM
  • Variety of elastomers to ensure chemical compatibility
  • Operating Pressure: 20-80 PSI
  • No pressure relief or bypass plumbing required
  • Self-priming to 28 ft.
  • Product ports: 3/8"
  • Gas inlet and outlet: 1/4"
  • Weight: 1.10lb.

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

Question:what diaphragm kit do I need for this pump - Gary (03/09/2020)
Response:Diaphragm Kit PN# FPK20466009. This item is not on our website at this time. You can order via our sales dept. PH# 800-233-3873