Tested components: 1）Inlet parts:（Below Cartridge）：Open the outlet mouth, applying cold water under pressure 2.5MPa，sustain the same pressure 60s，valve body no distortion and leakage. 2）Outlet parts（Upper the valve body）：Closed the outlet mouth with block，applying cold water under pressure 0.4MPa，sustain the same pressure 60s，valve body no distortion