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Graco Fast-Flo 226940 - User Manual

Graco Fast-Flo 226940
38 pages
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2575
307427ZAF
EN
Instructions-Parts List
Fast-Flo
®
Pump
Air-operated piston transfer pump for low viscosity fluids. For professional use only.
Only models that are EX certified are approved for use in European explosive atmosphere
locations (see page 4).
180 psi (1.2 MPa, 12.4 bar) Maximum Air Input Pressure
180 psi (1.2 MPa, 12.4 bar) Maximum Working Pressure
For models that are certified, see page 4.
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
This symbol on the nameplate
means the product is listed by
ETL. (UL Standard No. 79,
Standard for Power-Operated
Pumps for Petroleum Produce
Dispensing Systems).
1:1 RATIO
Stubby
Pump
Bung-Mounted
Adjustable
Length Pump
Bung-Mounted
Drum Length Pump

Table of Contents

Questions and Answers

  • H
    Heidi ChavezAug 9, 2025
    What to do if the Graco Water Pump fails to operate?
    • W
      wbrayAug 9, 2025
      If your Graco Water Pump isn't working, several factors could be at play. It might be due to a dirty or worn air motor, which requires cleaning or servicing. Also, check for inadequate air supply or restricted lines, and ensure the lines are clean and the air supply is sufficient. Other potential issues include closed or clogged air valves (open or clear them), a clogged fluid hose or valve (clear them), or worn or damaged valves or seals (service them as needed).
  • J
    John StoneAug 15, 2025
    Why is the output low on both strokes of my Graco Water Pump?
    • L
      Lisa MckeeAug 15, 2025
      If your Graco Water Pump operates but has low output on both strokes, it could be due to a clogged fluid hose or valve, which you should clear. Another reason might be an exhausted fluid supply, so refill the fluid and reprime the pump. Also, worn or damaged valves or seals can cause this issue, so service them.
  • K
    Kathryn CopelandAug 21, 2025
    Why is my Graco Water Pump operating erratically?
    • T
      Timothy VazquezAug 21, 2025
      If your Graco Water Pump operates erratically, it might be due to an exhausted fluid supply, so refill the fluid supply and reprime the pump. Another possible cause is a broken air motor compression spring, which would need to be replaced.
  • V
    vmillerAug 27, 2025
    What to do if the output is low on the upstroke of Graco Water Pump?
    • D
      danielleshermanAug 27, 2025
      If your Graco Water Pump operates but has low output on the upstroke, the cause may be a held open or worn piston valve, which requires clearing or servicing. Alternatively, worn or damaged valves or seals can cause this, so service the valve or seals.
  • A
    Amber DominguezSep 1, 2025
    How to fix low output on the downstroke of a Graco Water Pump?
    • G
      Gwendolyn LawrenceSep 1, 2025
      If your Graco Water Pump operates but the output is low on the downstroke, it could be due to a held open or worn intake valve, which needs to be cleared or serviced. Another potential reason is worn or damaged valves or seals, which you should also service.

Summary

Warnings

Equipment Misuse Hazard

Hazards associated with improper use of the pump and equipment.

Fire and Explosion Hazard

Risks of fire and explosion due to static, ventilation, and ignition sources.

Toxic Fluid Hazard

Dangers from hazardous fluids or toxic fumes exposure.

Moving Parts Hazard

Risks of injury from pinch or amputation by moving pump parts.

Installation

Grounding the System

Instructions for safely grounding the pump and related equipment.

Operation

Pressure Relief Procedure

Steps to safely relieve system pressure before servicing or shutdown.

Starting and Adjusting the Pump

Guide to starting the pump and setting the correct cycle rate.

Pump Shutdown

Maintenance

Troubleshooting

Pump Service

Disconnecting the Air Motor

Reconnecting the Air Motor

Pump Parts

Displacement Pump Service

Carbon Steel Displacement Pumps

Carbon Steel Displacement Pumps with Rubber Packings

Stainless Steel Displacement Pumps

Stainless Steel Displacement Pumps with Rubber Packings

Technical Data

Graco Fast-Flo 226940 Specifications

General IconGeneral
SeriesFast-Flo
Model226940
Housing MaterialPolypropylene
Seal MaterialSantoprene
Pump TypeDiaphragm
Air Inlet Size1/4" NPT
Fluid Inlet Size1/2" NPT
Fluid Outlet Size1/2" NPT
Wetted PartsPolypropylene, Santoprene
Inlet Size1/2" NPT
Outlet Size1/2" NPT

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