Sluice valve for operations

摘要

An operation for securing and coupling a coupling flange and a fluid device mounted through the interior of a valve case of a sluice valve for operations can be performed with good efficiency from the exterior while sufficiently ensuring the external mounting depth of the coupling tube part on the coupling flange and while facilitating the attachment of pulling and securing means and ensuring the attachment strength. A valve element (31) that is freely movable in a direction orthogonal to a pipe axial center and valve operation means (30) for movably operating the valve element (31) are provided to a valve case (32), which is provided with a coupling tube part (32C) that can be externally mounted on a coupling flange of a connecting pipe from the pipe axial center direction; pulling and securing means for pulling and securing the valve case (32) to the coupling flange is disposed on the coupling tube part (32C) of the valve case (32); and an operation recess (32J) for operating a fastener from a rear surface side of the coupling flange is formed in the coupling tube part (32C) of the valve case (32), the fastener being used for securing and coupling the coupling flange and the fluid device that is joined to the coupling flange through a flow channel inside the valve case (32).

主权项

1. A sluice valve for operations in which a valve element that is freely movable in a direction orthogonal to a pipe axial center and valve operation means for movably operating the valve element between a closed valve position and an open valve position are provided to a valve case, which is provided with a coupling tube part that can be is externally mounted on a coupling flange of a connecting pipe from the pipe axial center direction; and pulling and securing means for pulling and securing the valve case to the coupling flange is disposed on the coupling tube part of the valve case;
the sluice valve for operations having an operation recess formed on the coupling tube part of the valve case, and adapted for operating a fastener from a rear surface side of the coupling flange, the fastener being used for securing and coupling the coupling flange and a fluid device, which fluid device is joined to the coupling flange through a flow channel inside the valve case wherein a thickness of a first peripheral wall portion of the coupling tube part of the valve case is configured to be greater than a thickness of a second peripheral wall portion, the first peripheral wall portion being formed in the shape of a strip or substantially in the shape of a strip along the pipe axial center direction in a state that includes a location in which the pulling and securing means is attached, and the second peripheral wall portion being formed in the shape of a strip or substantially the shape of a strip along the pipe axial center direction in a state that includes a location in which the operation recess is formed.