公开(公告)号：US20170335979A1

公开(公告)日：2017-11-23

申请号：US15524799

申请日：2014-10-23

申请人： Nuovo Rignne Srl

发明人： Pierluigi TOZZI ,  Iacopo GIOVANNETTI ,  Alberto BABBINI ,  Francesco BUFFA

IPC分类号： F16K11/04 ,  F16K27/02 ,  B29D99/00 ,  B29K81/00 ,  B29K71/00 ,  B29K509/08

CPC分类号： F16K11/04 ,  B29D99/0085 ,  B29K2071/00 ,  B29K2081/04 ,  B29K2509/08 ,  F04B39/102 ,  F04B39/1053 ,  F16K15/08 ,  F16K27/0272

摘要： An automatic ring valve 10 comprising a valve seat 12 provided with a plurality of gas flow passages 14 arranged according to at least one annular row, at least a shutter 18 comprising at least one ring-shaped portion for selectively closing and opening the gas flow passages 14, wherein said ring-shaped portion of the shutter 18 comprises a fiber-reinforced matrix 40, at least one contrasting member for contrasting an opening movement of ring-shaped portion of the shutter 18, wherein said ring-shaped portion of the shutter 18 comprises a structural core 18A made by said fiber-reinforced matrix 40, and wherein at least a portion of said structural core 18A is covered by at least one primary layer 18B, designed to improve fracture and/or impact and/or wear resistance of said ring-shaped portion.