Valve Detector for Valve Leakage and Hydraulic System Leakage Fault Finding Accurately detect internal blockage or leakage of the valve while the system is online. Use an ultrasonic valve tester to check for hydraulic circuit failure to find internal leaks quickly and easily. Ultrasonic Valve Detector "Touch Mode" to collect sample readings along the loop. Detectors can clearly define the direction of flow and, more importantly, the source of the fault, even in high-noise areas. Internal leaks through the seal on the hydraulic ram create tiny bubbles in the oil, which "burst" in turn as they pass from the pressure side to the non-pressure side. These small explosions produce ultrasonic energy that is easily detected by the ultrasonic valve detector. And by adjusting the detector frequency to eliminate interference with the ultrasonic valve. Typical examples of valve detector application example - "valve leakage, hydraulic system leak detection method" 1, the instrument on the valve upstream pipeline (as shown in Figure A ) Determination of system environmental ultrasound. 2. Use the up and down arrow buttons on the main unit of the ultrasonic detector to adjust the sensitivity of the instrument and ensure that the arrow pointer on the LCD screen is hidden to measure the background signal of the system while taking note of the dB reading on the display. 3, the instrument against the valve downstream pipeline (Figure B Department) to listen to the leak signal. If the dB reading on the display is less than or equal to the reading at point A, the valve is leaking; if the dB reading at point B is increased relative to point A, the valve leaks. 4. Finally, place the detector on the downstream line somewhere below point B and confirm the leak point. If the valve leaks, the dB reading at point C in the figure should be less than the reading at point B. If the dB reading at point C is greater than the reading at point B, the leak should be somewhere downstream of the line. 5, if the valve is closed, almost can not hear the sound. If the valve is open, you can hear continuous or intermittent flow of sound, which is the sound of medium flowing through the valve body. 6, water treatment plant can refer to the ultrasonic detector digital readings after the valve overhaul calibration and setting work. Water treatment equipment gate valve readings generally lower than 5dBμV.