A jointlever is arranged on the joint, and can press the push rod when pulled by a guy cable to open the valve core.
接头上有接头杠杆，在拉索的拉动下能够压动顶杆，打开阀芯。
2
Furthermore, one hand lever (5) is connected by a joint to one of the jaws (7), and a pressure support is located between the hand levers (4, 5) for the formation of a toggle (K).