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I.Features
1.The valve is a kind of slide valve and
it is widely used.It can form different function valve.
2.The direction can be changed and the valve
core canbe mored through minor force.
3.Has valve cover, when the valve body begin
to transmute because of outside force,it has no influence
on valve cover ,which can make sure the valve core act agilely.
II.Symbol
III.Model code
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