KV value of BS standard globe valve

K_V value of BS standard globe valve

The K_V value (also known as the flow coefficient or C_V value in some regions) of a valve is a measure of its flow capacity. Specifically, it represents the volume of water in cubic meters per hour (m3/h) that will pass through the valve with a pressure drop of 1 bar (100 KPA or approximately 14.5 psi) across the valve.

The formula for calculating the K_V value is:

Where:

K_v is the valve flow coefficient in cubic meters per hour (m3/h).

Q is the flow rate of the fluid in cubic meters per hour.

ΔP is the pressure drop across the valve in pascals (Pa).

The higher the K_V value, the greater the flow capacity of the valve. The K_V value is crucial for selecting and sizing valves to ensure they can handle the required flow rates in a given system.

It's important to note that the K_V value is typically determined experimentally for a specific valve under specific conditions. Engineers use this value to compare different valves and select the most suitable one for a particular application, ensuring that it can provide the desired flow performance under specified pressure conditions.

In some regions, such as the United States, the term "C_V" is used instead of "K_V," and the relationship between them is C_V = 1.17 × K_V. The choice of terminology often depends on regional or industry standards.

Here, we will share the flow coefficient K_V value of BS standard globe valve represented by CL.