2、 The KV value and opening of the valve are two conceptual problems. They are called Cv abroad and Kv in China. Kv refers to the flow capacity of the valve. It is defined as: when the control valve is fully open, the pressure difference at both ends of the valve Δ When P is 100KPa and the fluid weight r is 1gf/cm3 (i.e. normal temperature water), the flow through the regulating valve per hour is in m3/h or t/h. (For example, a regulating valve with Kv=50 means that when the pressure difference between the two ends of the valve is 100KPa, the water volume per hour is 50m3/h.) The valve opening refers to the movement position of the valve core (or valve plate) when the valve core (or valve plate) changes the throttling area of the flow channel when the valve is being adjusted. It is generally expressed as a percentage, 0% when it is closed, and 100% when it is fully open.

The reason why pneumatic high-pressure ball valve has won the market is that some of its advantages are deeply loved by consumers. However, we also need to choose according to the actual needs, which kind of pilling valve is more suitable for their own working conditions, is the most correct purchase. Relevant information What should be paid attention to when using pneumatic butterfly valves? Grasp the key points of selecting several electric control valves. Talk about the matters of electric control valves. (1) The installation guide of electric control valves is worth seeing if you understand the working principle of pneumatic control valves