Patent ID: 6135935
Filing Date: 2000-10-24
Classification: D21G

Abstract:
A closing valve for a regulation valve of a variable-crown roll in a paper machine, the roll including a block frame having ducts through which pressure medium is passed to the regulation valve, the closing valve comprisinga frame part adapted to be arranged between the regulation valve and the block frame, said frame part including pressure medium ducts through which pressure medium flows between the block frame and the regulation valve,a connecting part movable relative to said frame part, andclosing members mounted on said connecting part and arranged to extend into said pressure medium ducts in said frame part such that movement of said connecting part relative to said frame part closes and opens said pressure medium ducts in said frame part and thus controls the flow of pressure medium between the block frame and the regulation valve,guide means for guiding movement of said connecting part relative to said frame part wherein said guide means comprises elongate members connected to said frame part, said connecting part including bores through which said elongate members pass.