Gate valve
AssigneeWaterworks Technology Development Organization Co., Ltd.
InventorsGou HORIKAWA, Shuhei AZUMA
Life of this patent
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Abstract
A gate valve includes a valve body for insertion through a through-hole formed in the fluid pipe, and a movement mechanism for moving the valve body along the diameter direction, and the valve body includes a valve main body and a seal member that is capable of undergoing elastic deformation and is provided on a holding portion of the valve main body. A core member formed from a material harder than the seal member is embedded between an outer face of the seal member, which is on the lower side in the movement direction, and a leading end face on the protruding side of the holding portion.
Claims8
A gate valve comprising:
- a valve body that is to be inserted into a fluid pipe through a through-hole formed in the fluid pipe, by movement in an insertion direction that conforms to a diameter direction of the fluid pipe;
- and
- a movement mechanism that moves the valve body in the insertion direction,
- wherein the valve body includes a valve main body and a seal member that is capable of undergoing elastic deformation and is provided on the valve main body in a region that covers a holding portion that protrudes in the insertion direction, and when the valve body is moved in the insertion direction by the movement mechanism such that the seal member comes into contact with an inner wall of the fluid pipe and undergoes elastic deformation, the seal member comes into close contact with the inner wall of the fluid pipe and blocks a flow of a fluid in the fluid pipe, and
- a core member that is separate from the holding portion and is formed by a harder material than the seal member is embedded between an outer face of the seal member on an insertion direction side and a leading end face on a protruding side of the holding portion.
Dependencies are inferred from the claim text.