Abstract: A boring machine for boring a part of a fluid pipe in an uninterrupted flow state, includes: a shaft member having a leading end to which a cutter is attached; a drive mechanism configured to rotate the cutter and the shaft member around the shaft of the shaft member; and a forward and backward moving operation mechanism configured to move the cutter and the shaft member forward and backward in the axial direction of the shaft member by a handle that is manually rotated. The forward and backward moving operation mechanism is further configured to switch a feed amount of the cutter and the shaft member in the axial direction between at least two different feed amounts according to a rotational amount of the handle.

Abstract: A fluid control device has a partition body formed by a wall portion that is provided with a through hole communicating with an opening portion in a valve seat, the wall portion being mounted on the valve seat body in a sealed manner, and a lid portion which is provided continuously to the wall portion, the lid portion covering an opening side of the casing, the partition body including a seal component that seals a gap between an inner surface of a casing and the partition body.

Abstract: Provided are an installation method and an installation device for a fluid control device capable of improving controllability of a fluid in a pipe by improving positional accuracy of a valve body inserted into a hole formed in a fluid pipe in a housing and decreasing the size, weight, and cost of construction equipment such as an operation valve device or an installation device of a fluid control valve.

Abstract: A fluid control device has a partition body formed by a wall portion that is provided with a through hole communicating with an opening portion in a valve seat, the wall portion being mounted on the valve seat body in a sealed manner, and a lid portion which is provided continuously to the wall portion, the lid portion covering an opening side of the casing, the partition body including a seal component that seals a gap between an inner surface of a casing and the partition body.

Abstract: Provided are an installation method and an installation device for a fluid control device capable of improving controllability of a fluid in a pipe by improving positional accuracy of a valve body inserted into a hole formed in a fluid pipe in a housing and decreasing the size, weight, and cost of construction equipment such as an operation valve device or an installation device of a fluid control valve.