Graco Fast-Flo 226940 - User Manual

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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.

Graco Fast-Flo 226940 Specifications

General

Series	Fast-Flo
Model	226940
Housing Material	Polypropylene
Seal Material	Santoprene
Pump Type	Diaphragm
Air Inlet Size	1/4" NPT
Fluid Inlet Size	1/2" NPT
Fluid Outlet Size	1/2" NPT
Wetted Parts	Polypropylene, Santoprene
Inlet Size	1/2" NPT
Outlet Size	1/2" NPT

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

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