氣動(dong)(dong)(dong)角座閥(fa)自(zi)動(dong)(dong)(dong)復位(wei)原理：在手(shou)柄(bing)處加裝彈簧(huang)(huang)，以杠桿(gan)式單(dan)邊彈簧(huang)(huang)為實(shi)際(ji)原理，開啟手(shou)柄(bing)時彈簧(huang)(huang)壓緊，放(fang)開手(shou)柄(bing)時彈簧(huang)(huang)推動(dong)(dong)(dong)手(shou)柄(bing)關閉，其作(zuo)用是依靠彈簧(huang)(huang)自(zi)動(dong)(dong)(dong)反彈復位(wei)的原理。其使用壽命可達百萬次。在石油、化工、輕工、食(shi)品、醫藥(yao)、環保等(deng)行業得到廣(guang)泛的使用。