1. What is a PVC Pipe Flow Rate Calculator?

Definition: This calculator determines the volumetric flow rate of liquid through a PVC pipe based on pipe radius and flow velocity.

Purpose: It helps plumbers, engineers, and DIYers calculate how much liquid can pass through a pipe under specific conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Volumetric flow rate (m³/s)
• \( r \) — Inner radius of the pipe (m)
• \( V \) — Flow velocity (m/s)

Explanation: The formula calculates the cross-sectional area of the pipe (πr²) and multiplies it by the flow velocity to determine volume per second.

3. Importance of Flow Rate Calculation

Details: Proper flow rate estimation ensures adequate water supply, correct pipe sizing, and efficient system design.

4. Using the Calculator

Tips: Enter the pipe's inner radius in meters and the flow velocity in m/s. Typical PVC pipe velocities range from 0.5-2.5 m/s for water.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure pipe radius?
A: Measure the inner diameter (ID) of the pipe and divide by 2. For standard PVC pipes, refer to manufacturer specifications.

Q2: What's a typical flow velocity for water in PVC pipes?
A: Residential systems typically use 0.9-1.5 m/s, while industrial systems may go up to 2.5 m/s.

Q3: Does this work for other pipe materials?
A: Yes, the formula applies to any circular pipe, though surface roughness (not in this calculation) affects real-world flow.

Q4: How do I convert m³/s to more common units?
A: 1 m³/s = 1000 liters/second = 15,850 gallons/minute (US).

Q5: Does this account for friction losses?
A: No, this is the theoretical maximum. Actual flow rates may be lower due to pipe friction, fittings, and elevation changes.