BUTTERFLY VALVE - ASAHI YUKIZAI CORP

Title:

BUTTERFLY VALVE

Document Type and Number:

WIPO Patent Application WO/2018/016538

Kind Code:

A1

Abstract:

In this butterfly valve (10) provided with: a main body (11); valve shafts (13, 14); and a valve body (30) that is rotatable with respect to the main body, the valve body is formed integrally from a core material (32) and a contour forming member (31) that is formed from a synthetic resin material and that encircles the core material and forms the contour of the valve body. The valve body has bearing holes (33, 34) that support the valve shafts, the contour forming member has a bearing inner peripheral part (36) that forms at least a part of the inner peripheral surface of each of the bearing holes, the contour forming member is formed continuously with the bearing inner peripheral part, and the core material has a bearing reinforcing part (35) that supports the bearing inner peripheral part of the contour forming member, radially outside from the rotation axis of the valve body.

Inventors:

MATSUSHITA KOTARO (JP)

Application Number:

PCT/JP2017/026141

Publication Date:

January 25, 2018

Filing Date:

July 19, 2017

Export Citation:

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Assignee:

ASAHI YUKIZAI CORP (JP)

International Classes:

F16K1/22

Foreign References:

JP2000170926A	2000-06-23
JP2007032683A	2007-02-08
JP2011058509A	2011-03-24
CH185491A	1936-07-31

Other References: