CHECK VALVE FOR PREVENTING SLAM AND WATER HAMMER

Title:

CHECK VALVE FOR PREVENTING SLAM AND WATER HAMMER

Document Type and Number:

WIPO Patent Application WO/2016/093511

Kind Code:

A1

Abstract:

The present invention relates to a check valve and, more particularly, to a check valve comprising a main disk and a separate auxiliary disk, the main disk making a rapid closing operation, and the auxiliary disk, which has an area smaller than that of the main disk, making a slow closing operation, thereby reducing the velocity of a reverse flow inside a conduit, right before the disks are finally closed, and preventing a slam (a characteristic phenomenon wherein, when the disks are closed with a bang, an instantaneous increase in pressure wave raises the possibility of piping fracture and causes noise and vibration) of the disks and water hammer.

Inventors:

YANG JI SUK (KR)
OH JAE WOOK (KR)

Application Number:

PCT/KR2015/012621

Publication Date:

June 16, 2016

Filing Date:

November 24, 2015

Export Citation:

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Assignee:

FLOWTECH CO LTD (KR)
YANG JI SUK (KR)
OH JAE WOOK (KR)

International Classes:

F16K15/03; F16K17/34; F16K47/02

Foreign References:

KR100567927B1	2006-04-05
KR20870010460U
JPS60151473A	1985-08-09
JPH08135814A	1996-05-31
KR200170011Y1	2000-03-02

Other References: