In producing a course, to make the parameter such as the pressure of medium, discharge accords with the requirement of technological process, need installs adjustment to undertake modulatory to afore-mentioned parameter. The main job principle of adjustment, it is to rely on to change the current area between valve of valve a powerful person and valve of a powerful person and valve base, achieve adjust the purpose of afore-mentioned parameter. A general designation that belongs to this kind of valve is control a powerful person, divide those who be drive of motivation of support medium itself to call among them from drive type control a powerful person is like a powerful person of pressure-relief valve, stabilized voltage to wait, every is banner come up of dynamical drive (like electric power, reduce air and fluid motive force) call him drive type dominates a powerful person or family, if dynamoelectric control valve, pneumatic control valve and fluid move control valve,wait. Reprint from Shanghai star pump valve creates limited company
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By adjust medium parameter chooses valve
From; Author:Stand originally