Nozzle sets · 2 models
SIMPSON nozzle sets 80145 vs 80146
The same five quick-connect tips in two orifice sizes: 3.0 (80145, 3,600 PSI) and 4.0 (80146, 4,500 PSI). The right one depends on your washer's flow.
| Model | Orifice size | Max pressure | Max temperature | Fitting | Tips | Source | |
|---|---|---|---|---|---|---|---|
| SIMPSON 80145 | 3.0 | 3,600 PSI | 212°F (hot and cold water) | 1/4 in quick-connect plug | 0° red, 15° yellow, 25° green, 40° white, soap black | SIMPSON ↗ | Check Price on Amazon |
| SIMPSON 80146 | 4.0 | 4,500 PSI | 212°F (hot and cold water) | 1/4 in quick-connect plug | 0° red, 15° yellow, 25° green, 40° white, soap black | SIMPSON ↗ | Check Price on Amazon |
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Which set fits your washer?
A nozzle number is the flow it passes at 4,000 PSI, so the 3.0 set suits roughly 2.6 GPM at 3,000 PSI, and the 4.0 set roughly 3.5 GPM at 3,000 PSI (standard nozzle formula). Most homeowner gas washers around 2.3–2.8 GPM are closer to the 3.0 set. Check your rating with the nozzle size calculator.
Before buying: match pressure, temperature and the connection at both ends to your machine. Compatibility is not confirmed for any specific washer.
Specifications from SIMPSON’s product and listing pages, checked 1 November 2026. We have not tested these products.