Water hydraulic valve was the key component of water hydraulic technology.The difficult problem must been conquered as erode, leakage, cavitation, impulsion, and so on.

• 水的汽化压力高，可压缩性小，密度大，这使得纯水液压阀中存在严重的气蚀腐蚀和拉丝侵蚀现象，从而导致阀很快失效。