Graco 287172 Pressure Transducer
$254.00
$295.00
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The Graco 287172 Pressure Transducer is an OEM sensor that ensures precise pressure control in your sprayer. Ideal replacement for maintaining consistent spray performance.
- Part Number: 287172
- Fits: LineLazer IV 3900/5900, 200HS, GMAX 3900–7900, Ultra/Ultimate 1095
- Function: Converts fluid pressure to electrical signal for control board
- Use: Restores accurate pressure regulation and eliminates surging
Quantity
Genuine OEM Part
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Graco 287172 Pressure Transducer — Overview & Compatibility
Compatible Machines
Verify your exact model series before ordering (labels like A/B/C or specific part lists in your manual).
- LineLazer IV 3900 (select series)
- LineLazer IV 5900 (select series)
- LineLazer 200HS (1-gun & 2-gun, select series)
- LineLazer II 3900 / 5900 (select series)
- GMAX 3900 (non-display, select series)
- GMAX 5900 (Lo-Boy / Hi-Boy, non-display)
- GMAX 7900 (select series)
- Ultra/Ultimate 1095 (non-display, select series)
What is the Graco 287172 Pressure Transducer?
The 287172 Pressure Transducer is an OEM sensor that converts pump/fluid pressure into an electrical signal so the sprayer’s control board can regulate and display pressure accurately. A worn or failed transducer can cause pressure fluctuation, hunting/surging, or inaccurate readings.
Key Details
| Part Number | 287172 (may appear as 287-172 in some literature) |
|---|---|
| Type | Pressure Transducer / Pressure Sensor (OEM) |
| Primary Use | Feedback signal for electronic pressure control on select LineLazer, GMAX, and Ultra/Ultimate sprayers |
| Typical Symptoms When Failing | Erratic pressure, surging, “can’t hold pressure,” incorrect display reading, pressure spikes at trigger |
| Cross-Reference | OEM Graco only (no universal substitute recommended) |
Features & Benefits
- OEM accuracy for stable spray patterns and consistent pressure control
- Direct-fit replacement on listed machines (no splicing on compatible series)
- Restores proper pressure feedback to eliminate hunting/surging
- Supports longer pump life by preventing over-pressure conditions
Installation Tips
- Power off and depressurize the system completely; trigger gun into a grounded metal pail.
- Note the connector orientation and routing before removal.
- Use thread sealant if specified by your manual; avoid over-torque that can damage the sensor.
- After install, set prime, bring pressure up gradually, and verify reading stability.
Frequently Asked Questions
Check the sprayer’s parts manual by exact model and series. If your bill of materials lists 287172, you’re good. If it lists a different transducer number, do not substitute without verification.
Unstable pressure, hunting/surging, inaccurate display PSI, or error behavior after ruling out clogged filters, worn tips, and pump check-valve issues typically indicate a failing transducer.
Most models do not require manual calibration; the control board reads the new sensor automatically. Follow your manual—some diagnostics let you verify stable PSI at typical spray settings.
Not recommended. Electrical range, connector, and thread spec vary by generation. Use the exact OEM part listed for your model/series to prevent control issues or leaks.
Often, yes—if the sensor is faulty. But also inspect tip/filters, packings, and inlet/outlet check valves. Surging can be multi-factor.
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