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Graco 226040 - User Manual

Graco 226040
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Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1970, Graco Inc. is registered to I.S. EN ISO 9001
2:1 Ratio Standard Pump
360 psi (25 bar) Maximum Fluid Working Pressure
180 psi (12.5 bar) Maximum Air Input Pressure
55 GALLON (200 LITER) DRUM SIZE
Model 226040, Series G
Stainless Steel, PTFE, Packed
Brevet No. 86-07085
5 GALLON (19 LITER) PAIL SIZE
Model 223954, Series B
Stainless Steel, PTFE Packed
Table of Contents
Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Service (Model 226040) 10. . . . . . . . . . . . . . . . . .
Pump Service (Model 223954) 11. . . . . . . . . . . . . . . . . .
Pump Parts (Model 226040) 12. . . . . . . . . . . . . . . . . . . .
Pump Parts (Model 223954 14. . . . . . . . . . . . . . . . . . . . .
Accessories 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Information 19. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 22. . . . . . . . . . . . . . . . . . . . . .
Graco Information 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
307026P
Read warnings and instructions.
Model 223954 Shown
II 1/2 G T6
ITS03ATEX11227
0359
Parts

Table of Contents

Questions and Answers

  • N
    Nathan HigginsAug 4, 2025
    Why does my Graco 226040 fail to operate?
    • A
      ashley42Aug 4, 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. Check for inadequate air supply or restricted lines; cleaning the lines or increasing the air supply might resolve the issue. Also, ensure that the air valves are open and clear. A clogged fluid hose or valve could also be the culprit, so clear them out. Lastly, worn or damaged valves or seals may need servicing.
  • M
    Michael HarrisAug 12, 2025
    What to do if the output of my Graco Water Pump is low on both strokes?
    • S
      smithmaryAug 12, 2025
      If your Graco Water Pump's output is low on both strokes, there are a few potential reasons. First, a clogged fluid hose or valve could be restricting the flow, so clear them. Second, the fluid supply might be exhausted; refill it and reprime the pump. Finally, worn or damaged valves or seals could be the cause, requiring servicing.
  • T
    tburgessAug 19, 2025
    Why is my Graco 226040 operating erratically?
    • K
      Kyle KirkAug 19, 2025
      If your Graco Water Pump is operating erratically or at an accelerated pace, consider these potential causes: the fluid supply might be exhausted, requiring a refill and repriming of the pump. Alternatively, a broken air motor compression spring could be the issue, necessitating replacement.
  • L
    Logan BoltonAug 27, 2025
    What causes low output on the downstroke of my Graco 226040 Water Pump?
    • R
      Roy WrightAug 27, 2025
      If your Graco Water Pump's output is low on the downstroke, it could be due to a held open or worn intake valve, which needs clearing or servicing. Another possibility is worn or damaged valves or seals, which would also require servicing.

Summary

Symbols

Installation

Grounding the System

Essential safety procedure for preventing static discharge and fire hazards during pump operation.

Operation

Pressure Relief Procedure

Manual procedure to safely relieve system pressure before servicing or adjustments to prevent accidental spray.

Flush the Pump Before Using

Steps to clean pump internals with solvent to remove testing oil and prevent fluid contamination.

Starting and Adjusting the Pump

Instructions on how to safely start, prime, and adjust pump speed and pressure for optimal performance.

Shutdown and Care of the Pump

Guidelines for safely shutting down the pump, including positioning for storage and preventing damage.

Troubleshooting

Pump Service (Model 226040)

Before You Start

Preparation steps including gathering parts, tools, and safety precautions before servicing the pump.

Servicing the Displacement Pump

Detailed instructions and diagrams for disassembling and reassembling the displacement pump components.

Pump Service (Model 223954)

Before You Start

Preparation steps including gathering parts, tools, and safety precautions before servicing the pump.

Servicing the Displacement Pump

Detailed instructions and diagrams for disassembling and reassembling the displacement pump components.

Pump Parts (Model 226040)

Pump Parts (Model 223954)

Accessories

Dimensions

Service Information

Technical Data

Graco Standard Warranty

Graco Information

Graco 226040 Specifications

General IconGeneral
Model226040
TypePneumatic Double Diaphragm Pump
Power SourceAir Operated
Fluid Inlet Size1" NPT
Fluid Outlet Size1" NPT
Wetted PartsPolypropylene, Santoprene
Inlet Size1" NPT
Outlet Size1" NPT

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