电(dian)(dian)动(dong)插板(ban)(ban)阀(fa)是(shi)一种闸板(ban)(ban)与阀(fa)座始(shi)终紧密(mi)接触(chu)密(mi)封的(de)(de)阀(fa)门。电(dian)(dian)动(dong)插板(ban)(ban)阀(fa)启闭件是(shi)闸板(ban)(ban),闸板(ban)(ban)的(de)(de)运动(dong)方(fang)(fang)向(xiang)与流体方(fang)(fang)向(xiang)相垂直(zhi),电(dian)(dian)动(dong)插板(ban)(ban)阀(fa)只能作(zuo)(zuo)全开和(he)(he)全关,不能作(zuo)(zuo)调节(jie)和(he)(he)节(jie)流。闸板(ban)(ban)有两(liang)个密(mi)封面,**常(chang)用的(de)(de)模式闸板(ban)(ban)阀(fa)的(de)(de)两(liang)个密(mi)封面形(xing)(xing)成(cheng)楔(xie)形(xing)(xing)、楔(xie)形(xing)(xing)角随阀(fa)门参(can)数而异。