Yi Seed Valve Ju mono- Valve (6) and a Ju mono- Round shapes film (above 70) Valve Body (7) The Mo Let Valve (6) and When Yi Kao Valve (Time Will Valve Zuo Feng Closed are not leaked at sealing Shang 6), wherein The Valve (6) With Valve Body (7 Open mouthfuls of) You (64) (65) (71) (73), Hu Xiang Jiao Wrong Let set Qie When Valve Body (7) film (70) Xian Qi Time Agencies at a clear passage, wherein:The film (70) of The Valve Body (7) has Open mouthfuls of La Long (7), equal Uniform divides Fabric to set in the Zhou Wai Let of film (70) along Yi Round, wherein (71) Yong Kuang Strip (22) Hu Xiang Ge Open, wherein The films (70) are thin in phase O to The Kuang Strip District Yu Let Meter Cheng More by Open mouthfuls of the identical The La Long in the center of The Round Round Xin great Approximately With films (70). Ci Valve Ke Lian Price and Jane Single Di System make, Should is with reliable, and in Warm degree Change Move More great Time also Few not Change shapes. Ta Te Do Fitness are sucked Zhao Group Yi Minus Shao No Xiao Body Plot with what.一種閥,具一閥座(6)及一具一圓形膜(70)的閥體(7),該膜設在閥座(6)上方且當倚靠在閥座(6)上時將閥座封閉成密封不漏,其中該閥座(6)與閥體(7)有開口(64)(65)(71)(73),互相交錯設置且當閥體(7)的膜(70)掀起時構成一自由通道,其中:該閥體(7)的膜(70)具有拉長的開口(7),均勻沿著一圓分佈在膜(70)的周圍設置,其中該圓的圓心大約與膜(70)的中心相同,該拉長的開口(71)用框條(22)互相隔開,其中該膜(70)在相鄰到該框條的區域設計成較薄。此閥可廉價而簡單地製造,其應用上可靠,且在溫度變動較大時也幾不變形。它特別適用於吸奶罩組以減少無效體積。