Stainless steel ball valve must be after several experiments, can be put into normal use.

Withstand voltage test, compression test, the test pressure is 2.45 MPa, under the pressure, continue after 2 min, pipe fittings and pipe connection parts should be no leakage and falls off phenomenon.

Drawing test: when drawing experiment was carried out, at a rate of 1-4 mm/min stretch, until pipe and tube from, the tensile force should be greater than the minimum tensile resistance at this point, the minimum tensile resistance of pipe fittings. During vibration test, the test pressure is 1.75 MPa, under the pressure, for a number 100000 vibration, pipe fittings and pipe connection parts should be no leakage and falls off phenomenon.

Stainless steel ball pressure fluctuation test