In balancing valve upstream and downstream ends of the tube with a hole , used to measure the fluid through valves pressure reduction 在平衡閥的上游、下游端各裝一個測壓孔,用來測量流體通過閥門的壓降。
Insert a soft , blunt instrument into the downstream end of the valve and push the ball and seal carrier out of the upstream end of the valve 將柔軟的、鈍的工具插入閥門的下游端口,將球體和密封托架從閥門的上游端口推出。