公开(公告)号：US20220074514A1

公开(公告)日：2022-03-10

申请号：US17014864

申请日：2020-09-08

申请人： Magic Plastics, Inc.

发明人： Anna Sarno

IPC分类号： F16K31/06 ,  F16K15/03

摘要： A check valve has an internal gate having an adjustable retention force, such that in the event that if the differential pressure between the upstream and downstream pressure changes, the force required to allow flow through the valve may be adjusted without removal of the valve from the piping system.

公开(公告)号：US11268627B1

公开(公告)日：2022-03-08

申请号：US17014864

申请日：2020-09-08

申请人： Magic Plastics, Inc.

发明人： Anna Sarno

IPC分类号： F16K15/00 ,  F16K31/06 ,  F16K15/03

摘要： A check valve has an internal gate having an adjustable retention force, such that in the event that if the differential pressure between the upstream and downstream pressure changes, the force required to allow flow through the valve may be adjusted without removal of the valve from the piping system.