1) Compact configuration, tiny bulk, light and operate skillfully and conveniently. 2) It adopt three dimensional eccentric elasticity or multiple layers hard sealing configuration, the hermetical capability can reach to zero leakage. 3) This kind of valve with no flange, which makes pipe elegantly and binding up conveniently. 4) It have characteristic of high temperature resistant, high pressure resistant, antisepsis, wearable, etc.
