1. What is the Spray Nozzle Flow Rate?

The Spray Nozzle Flow Rate calculates the required flow rate in gallons per minute (GPM) for spray nozzles based on application rate (GPA), speed (MPH), and nozzle spacing. This is essential for proper pesticide or fertilizer application in agricultural spraying.

2. How Does the Calculator Work?

The calculator uses the flow rate equation:

Where:

• \( GPA \) — Gallons per acre (gal/ac)
• \( MPH \) — Speed in miles per hour
• \( Spacing \) — Nozzle spacing in inches
• 5940 — Conversion constant

Explanation: The equation converts application rate and speed into the required nozzle output, accounting for unit conversions between acres, miles, inches and minutes.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculation ensures proper chemical application, prevents under/over-application, and helps maintain spray quality and coverage.

4. Using the Calculator

Tips: Enter GPA in gallons per acre, speed in MPH, and nozzle spacing in inches. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5940 the conversion constant?
A: It combines conversions for acres to sq ft (43,560), miles to inches (63,360), and hours to minutes (60).

Q2: What are typical flow rates for agricultural nozzles?
A: Typically 0.1-1.5 GPM depending on nozzle type and application requirements.

Q3: How does pressure affect flow rate?
A: Flow rate increases with the square root of pressure. Doubling pressure increases flow by about 1.4 times.

Q4: Should I account for overlap when calculating spacing?
A: No, use the actual nozzle spacing. Overlap is accounted for in the GPA value.

Q5: How often should I recalibrate my sprayer?
A: At least once per season and whenever you change nozzles, chemicals, or application rates.