1. What is the Nozzle Orifice Size Equation?

The nozzle orifice size equation calculates the optimal nozzle opening size for a pressure washer based on water flow rate (GPM) and pressure (PSI). This ensures proper pressure and flow for effective cleaning.

2. How Does the Calculator Work?

The calculator uses the nozzle size equation:

Where:

• \( \text{orifice} \) — Nozzle orifice size (unitless)
• \( \text{gpm} \) — Water flow rate in gallons per minute
• \( \text{psi} \) — Water pressure in pounds per square inch

Explanation: The equation balances flow rate and pressure to determine the optimal nozzle opening size for maximum cleaning efficiency.

3. Importance of Proper Nozzle Sizing

Details: Correct nozzle sizing ensures optimal cleaning performance, prevents pump damage, and maintains proper pressure washer efficiency.

4. Using the Calculator

Tips: Enter your pressure washer's flow rate (GPM) and operating pressure (PSI). Both values must be greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is nozzle size important?
A: Proper nozzle size ensures the correct pressure and flow rate combination for effective cleaning without damaging surfaces or the pressure washer.

Q2: What are typical nozzle sizes?
A: Common sizes range from 1.0 to 6.0, with smaller numbers creating higher pressure streams for tougher cleaning jobs.

Q3: How do I measure my current nozzle size?
A: Nozzle size is often stamped on the nozzle itself or can be measured with precision calipers.

Q4: Can I use different nozzle sizes?
A: Yes, different sizes create different spray patterns and pressures for various cleaning tasks.

Q5: Where can I buy replacement nozzles?
A: Home Depot and other hardware stores carry a variety of pressure washer nozzles in standard sizes.