Spray Nozzle Application

Calvin CheahAuthor
Aaron AngAuthor

Here’s a guide to pressure washer nozzle spray angles, color-coded for easy identification, and their common applications: 0° (red) for concentrated cleaning, 15° (yellow) for heavy-duty cleaning, 25° (green) for general-purpose cleaning, and 40° (white) for light-duty and delicate surfaces.

Nozzle Color	Spray Angle	Common Applications
Red	0°	Concentrated cleaning, removing stubborn stains like chewing gum or graffiti
Yellow	15°	Heavy-duty cleaning, removing tough dirt, grease, or paint from hard surfaces like concrete or brick
Green	25°	General-purpose cleaning, washing patios, decks, and siding
White	40°	Light-duty cleaning, rinsing windows, vehicles, and delicate surfaces

Choosing the right orifice size is key to protecting your pressure washer and the surface you’re cleaning. Use this chart to match your machine’s PSI and LPM for the ideal nozzle setup.

Orifice Size		Pounds per Square Inch (PSI)
Orifice Size		1015	1160	1305	1450	1595	1740	1885	2030	2175	2320	2465	2610	2755	2900	3045	3190	3335	3480	3625
020	Litres per Minute (LPM)	3.81	4.07	4.32	4.55	4.78	4.99	5.19	5.39	5.58	5.76	5.94	6.11	6.28	6.44	6.60	6.75	6.91	7.05	7.20
025		4.76	5.09	5.40	5.69	5.97	6.24	6.49	6.73	6.97	7.20	7.42	7.64	7.85	8.05	8.25	8.44	8.63	8.82	9.00
030		5.73	6.12	6.50	6.85	7.18	7.50	7.81	8.10	8.39	8.66	8.93	9.19	9.44	9.68	9.92	10.15	10.38	10.61	10.83
035		6.68	7.14	7.58	7.98	8.37	8.75	9.10	9.45	9.78	10.10	10.41	10.71	11.01	11.29	11.57	11.84	12.11	12.37	12.63
040		7.63	8.16	8.66	9.12	9.57	9.99	10.40	10.79	11.17	11.54	11.90	12.24	12.58	12.90	13.22	13.53	13.84	14.13	14.43
045		8.59	9.18	9.74	10.26	10.76	11.24	11.70	12.14	12.57	12.98	13.38	13.77	14.14	14.51	14.87	15.22	15.56	15.90	16.23
050		9.54	10.20	10.82	11.40	11.96	12.49	13.00	13.49	13.96	14.42	14.86	15.29	15.71	16.12	16.52	16.91	17.29	17.66	18.03

Calvin Cheah

Calvin brings a wealth of experience across multiple engineering disciplines, including chemical, mechanical, and electrical engineering. His in-depth knowledge of filtration systems and hydraulic pumps has positioned him as an expert in the pressure washer product category. With a unique combination of technical expertise and business insight, Calvin excels at solving complex challenges and driving innovation, particularly in the car detailing industry.
Aaron Ang

Aaron is a passionate car detailing enthusiast who channels his expertise and love for pristine vehicles into engaging blog content for a leading detail store website. With a keen eye for detail and a wealth of knowledge about the latest products and techniques, Aaron provides invaluable insights and tips to fellow car enthusiasts. His dedication to achieving showroom-quality results and his ability to explain complex processes in an easy-to-understand manner make his blog a go-to resource for anyone looking to elevate their car detailing game.

Spray Nozzle Application

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