Cv vs. Kv: Understanding Flow Coefficients for 4V210-08

Metric vs. Imperial: Deciphering Flow Specs for 4V210-08

Depending on your region, you might see the flow rate of the Airtac 4V210-08 listed as Cv 0.89 or as a Kv value. Let’s clarify the difference for your engineering team.

1. The Conversion

Cv is the imperial measure (US), while Kv is the metric equivalent (European). To convert: Cv = 1.156 x Kv. For the 4V210-08, this means a Kv of approximately 0.77 m³/h.

2. Why It Matters

Using the correct coefficient is vital for fluid dynamic simulations. If you use the wrong value in your PLC's pneumatic calculation block, your timing and pressure drop estimates will be inaccurate. Stick to the Airtac 4V210-08 official specs for the best results.