... , corrosive water. Nominal diameter2"~8"Applicable medium air, water, steam, gas as well as weak corrosive media, such as acid, alkali ... system, adjust and closure equipment used to do;2.3 "24 "rubber seat directly vulcanization to the body, can avoid the ... maintenance, replacement;3.30 "72 "eccentric structure, equipped with overflow valve disc way, can obtain higher intensity, light weight, the more ...