Method For Testing The Performance Of Wafer-type Fluorine-lined Butterfly Valves

Methods for testing the performance of Lined Butterfly Valve:
1. Temperature
The test temperature includes the temperature range from room temperature to liquid nitrogen, which can be measured by a thermocouple thermometer.
2. Pressure
The test pressure measurement range is between 0-10MPa. Pointer-type precision pressure gauges and digital pressure gauges display the system pressure on the dashboard. Then the pressure of the system is measured by a pressure transmitter and converted into a voltage signal. Then the digital multimeter is used to measure, collect and input into the measurement and control computer, and the computer automatically records and saves the data.
3. Liquid level
To ensure that the height of liquid nitrogen meets the test requirements, a differential pressure pressure transmitter can be used to measure the liquid level. Then a digital multimeter is used to measure and collect electrical signals and input them into the computer to determine whether liquid nitrogen needs to be added.
4. Flow
Depending on the sealing form of the wafer-type fluorine-lined butterfly valve, the allowable leakage is also different. The leakage requirement of the wafer-type fluorine-lined soft-sealed butterfly valve is zero, while the wafer-type fluorine-lined hard-sealed butterfly valve can allow a certain amount of leakage. These leaks are very small, so it is not feasible to measure them with a general flow meter. You can measure them by counting the number of bubbles leaking from the open end in the water. Another method is to count the number of electrical pulses automatically collected by computer data.