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公开(公告)号：US10794505B2
公开(公告)日：2020-10-06
申请号：US15635904
申请日：2017-06-28
Inventor： Li Li , Jing Chen , Fei Fei Ji , Shao Lijing
IPC: F16K17/04 , F16K31/524 , F16K17/30 , F16K1/30 , F16K39/02
Abstract: An internal valve including a valve body, a poppet valve coupled to the valve body, a bleed valve, a stem slidably disposed in the valve body and operatively coupled to the bleed valve. The stem is shiftable from a first position wherein the poppet valve and the bleed valve are both closed, to a second position wherein the bleed valve is open, and a third position wherein the bleed valve is closed, the poppet valve is open, and the poppet valve may shift toward the closed position and the bleed valve may open in response to a pressure change. A spring seat is coupled to the stem via a retaining feature such that the spring seat is movably disposed in the valve body, and a spring is operatively coupled to the stem via the spring seat and configured to bias the stem toward the first position.
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公开(公告)号：US20180259079A1
公开(公告)日：2018-09-13
申请号：US15635904
申请日：2017-06-28
Inventor： Li Li , Chen Jing , Ji Feifei , Shao Lijing
IPC: F16K17/04
Abstract: An internal valve including a valve body, a poppet valve coupled to the valve body, a bleed valve, a stem slidably disposed in the valve body and operatively coupled to the bleed valve. The stem is shiftable from a first position wherein the poppet valve and the bleed valve are both closed, to a second position wherein the bleed valve is open, and a third position wherein the bleed valve is closed, the poppet valve is open, and the poppet valve may shift toward the closed position and the bleed valve may open in response to a pressure change. A spring seat is coupled to the stem via a retaining feature such that the spring seat is movably disposed in the valve body, and a spring is operatively coupled to the stem via the spring seat and configured to bias the stem toward the first position.
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