Graco 190172 Displacement Rod
The Graco 190172 Displacement Rod is a genuine OEM Q-Rod used in Graco displacement pump assemblies. It ensures smooth piston motion and maintains pressure consistency in high-performance pumps.
- Fits Check-Mate 450 and Dura-Flo series pumps
- Compatible with 41:1 Bulldog, 41:1 DF600 SS, and X46:1 NXT Dura-Flo Bare
- Precision-machined for durability and leak-free operation
Compatibility & Key Details for Graco 190172 Displacement Rod (Q-Rod)
Compatible Machines
This genuine Graco 190172 Displacement Rod is used in the displacement pump section of the following Graco pump systems:
- Graco Check-Mate 450 pump assemblies
- Graco 41:1 Bulldog (air-powered) pumps
- Graco 41:1 DF600 SS (Dura-Flo) pumps
- Graco X46:1 NXT Dura-Flo (Bare) pumps
What this part is
The 190172 Displacement Rod (often called a Q-Rod or pump piston rod) is the internal rod that transfers the drive motion to the fluid piston inside the displacement pump. It’s a precision, wear-critical OEM component designed to maintain sealing integrity and smooth pump stroking.
Quick Specs
| OEM Part # | 190172 |
|---|---|
| Part Name | Displacement Rod (Q-Rod) |
| Function | Links the air/drive section to the fluid piston in the displacement pump. |
| Application | For select Check-Mate and Dura-Flo / NXT Dura-Flo pump systems (see compatibility list above). |
| Genuine OEM | Yes – Graco |
Benefits & When to Replace
- Restores smooth pump stroke and consistent pressure.
- Helps maintain packing/seal life and reduces premature wear.
- Replace if you see scoring, bending, corrosion, or persistent packing leaks.
What’s Included
- 1 × Graco 190172 Displacement Rod
Note: Inspect and service packings, seals, and mating pump components during rod replacement for best results.
Frequently Asked Questions
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