초록 ▼

A regulation valve and a method for changing the characteristic flow curve and/or the maximum capacity of a regulation valve. The valve consists of a housing provided with a flow duct, a closing member, which is fitted inside the housing in the flow duct and shaped as a body of rotation or as a part

A regulation valve and a method for changing the characteristic flow curve and/or the maximum capacity of a regulation valve. The valve consists of a housing provided with a flow duct, a closing member, which is fitted inside the housing in the flow duct and shaped as a body of rotation or as a part of a body of rotation, and a turning shaft which extends from the closing member to outside the housing to facilitate relating the closing member. The shape of the forward edge of the closing face of the closing member differs from the shape of the rearward edge. The characteristic flow curve of the valve is affected by the shape of the edge of the closing face of the closing member at whose side the flow opening starts being formed when the valve is rotated from the closed position to the opened position. To change the characteristic flow and/or the maximum capacity, one of the two directions of rotation is chosen to be the direction of opening of the valve.

대표청구항 ▼

A regulation valve comprising: a housing having a first opening and a second opening which are connected by a flow duct; a closing member disposed in the flow duct in the housing for regulating flow through the flow duct, the closing member being rotatable about a shaft axis so that a closing face o

A regulation valve comprising: a housing having a first opening and a second opening which are connected by a flow duct; a closing member disposed in the flow duct in the housing for regulating flow through the flow duct, the closing member being rotatable about a shaft axis so that a closing face of the closing member closes one of said openings at a time, the closing face closing the flow duct when the closing member is disposed in a closed position, the closing face having a first edge which regulates flow through said one opening when the closing member is rotated from said closed position in a first direction about said shaft axis, the closing face having a second edge which regulates flow through said one opening when the closing member is rotated from said closed position in a direction opposite said first direction about said shaft axis, said first and second edges having different shapes; and a turning shaft extending from said closing member to outside the housing for rotating the closing member about said shaft axis in said first and opposite directions.