... valve 1.19years experience 2.low leakagerate,high quality 3.OEM is welcome 4.CE High quality Anti-sweat worm gear butterfly valve ... :PN10/16 Applicable medium: water ,sea water, sewage , oil, air, weak acid and soda etc. Applicable temperature of electro valve ... , perfect seal, without leakage under the pressure test. 4.Flow curve tending to straight-line. Excellent regulation performance. 5.Various ...