公开(公告)号：US20170138485A1

公开(公告)日：2017-05-18

申请号：US15323441

申请日：2015-07-02

申请人： Huifeng TANG

发明人： Huifeng TANG

IPC分类号： F16K1/46 ,  F16K31/50 ,  G01N1/22 ,  F16K1/02

CPC分类号： F16K1/46 ,  F16K1/02 ,  F16K3/246 ,  F16K11/0716 ,  F16K31/50 ,  F16K31/508 ,  G01N1/22

摘要： A gas sampling bag valve with sealing rings moving back and forth to control a lateral gas nozzle is easy to operate and not prone to leaking gas. The connection portion between the valve and the membrane of the gas sampling bag comprises, from exterior to interior sequentially, a valve body with the lateral gas nozzle, a rubber gasket, the membrane of gas sampling bag and a bottom disc of a fastener, and the valve is fixed to the gas sampling bag by way of clockwise rotating the fastener. The sealing ring of top cover that controls a switch and is close to a knob prevents gas from leaking from a thread gap between the top cover control switch and the valve body.