美標(biāo)止回閥是指依靠介質(zhì)本身流動(dòng)而自動(dòng)開(kāi)、閉閥瓣，用來(lái)防止介質(zhì)倒流的閥門(mén)，又稱逆止閥、單向閥、逆流閥、和背壓閥。止回閥屬于一種自動(dòng)閥門(mén)，其主要作用是防止介質(zhì)倒流、防止泵及驅(qū)動(dòng)電動(dòng)機(jī)反轉(zhuǎn)，以及容器介質(zhì)的泄放。止回閥還可用于給其中的壓力可能升至超過(guò)系統(tǒng)壓的輔助系統(tǒng)提供補(bǔ)給的管路上。
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http://www.0577v.net/prod.asp?cid1=47 氣動(dòng)蝶閥
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http://www.0577v.net/prod.asp?cid1=53 法蘭截止閥
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http://www.8kty.com/ 蝶閥生產(chǎn)廠家
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http://www.yjfmw.com/ 刀型閘閥
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http://www.yjzzfm.net/list/?111_1.html 通風(fēng)碟閥
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