Butterfly valve and method of manufacturing the same
OwnerSang Seon LEEinventor
Life of this patent
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Abstract
The butterfly valve comprises a body in which an inserting space is formed; and a disk inserted into the inserting space of the body, wherein fluid flow is opened or closed in response to rotation of the disk, wherein the disk further includes: a disk body formed of a metal; a first plastic layer formed of a first plastic on the disk body; a second plastic layer formed of a second plastic on the first plastic layer, wherein a melting point of the first plastic layer is different from a melting point of the second plastic layer, and the disk body is formed of a framework structure having an internal space.
Claims3
A butterfly valve comprising:
- a body in which an inserting space is formed;
- and
- a disk inserted into the inserting space of the body,
- wherein fluid flow is opened or closed in response to rotation of the disk,
- wherein the disk further includes:
- a disk body formed of a metal;
- a first plastic layer formed of a first plastic on the disk body;
- a second plastic layer formed of a second plastic on the first plastic layer,
- wherein a melting point of the first plastic layer is different from a melting point of the second plastic layer, and
- the disk body is formed of a framework structure having an internal space.
A fluid contacting member contacted with a fluid in a valve, the fluid contacting member comprising:
- a body formed of a metal and manufactured by using a mechanical processing;
- a first plastic layer formed on the body and formed of a first plastic;
- and
- a second plastic layer formed on the first plastic layer and formed of a second plastic,
- wherein the plastic layers are formed through an insert molding, a melting point of the first plastic is different from a melting point of the second plastic, and the body is formed of a framework structure having an internal space.
Dependencies are inferred from the claim text.