2.Siple and compact construction, quick 90 degress on-off operation.
3.Miniminzed operation torque, energy saving.
4.Flow curve tending to straight line. Excellent regulation perfoemance.
5.Long service life. Standing the test of tens of thousands opening/closing operation.
6.Bubbles-tight sealing with no leakage under the pressure test.
7.Wide selection of materials, applicable for various mdeium.