EN
(1) The working principle is different: the working principle of the one-piece ball valve is the mechanical pressure of the stem; the working principle of the two-piece ball valve is to make the valve unblocked or blocked by rotating the valve core.
(2) The valve body is different: the one-piece ball valve is fixed by a plug head; the two-piece ball valve is fixed by two pieces of valve body sandwiching the ball. The maintenance is relatively complicated, and the tightness of the bolt in the middle is very important.
(3) The closing parts are different: the closing part of the one-piece ball valve is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing of a valve; while the two-piece ball valve has no special requirements.
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