What Size Float Do I Need For My Ball Float Valve?

What Size Float Do I Need For My Ball Float Valve? Unlock the secrets of float valve sizing by grasping the direct connection to BSP thread sizes. Let’s break down the basics and clear up the confusion surrounding thread measurements in the plumbing world.

Thread Size Basics

BSP Measurements: The size of your ball float corresponds directly to the float valve’s inlet thread size, measured in BSP (British Standard Pipe). Most plumbing products state thread sizes in BSP imperial measurements.

Imperial vs. Actual Diameter: Note that BSP imperial thread measurements are approximately 1/4 inch larger than the actual diameter. For instance, a 1 1/4 inch BSP Float Valve has an actual thread diameter of around 1 1/2 inches.

Sizing Clarification

Example for Clarity: Consider a float valve with an actual diameter of 1 1/4 inches; it’s effectively a 1-inch BSP thread. Understanding this ensures you select the right float valve size based on the actual diameter.

Table for Easy Reference: Refer to the table below for a clear indication of the float ball required for each size of float valve, simplifying the selection process.

Conclusion

Empower your understanding of float valve sizes and BSP threads. Use this knowledge to confidently choose the correct float valve, ensuring compatibility and optimal performance in your plumbing system.

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