内蒙古阿拉善盟用途佳型伺服单元SGDV-470A21A003FT005#2021年推荐

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Vickers威格士859193DG4V30CMUB660DG4V30CMUB660阀瓣达到规定开启高度时的进口压力。排放压力的上限需服从国家有关标准或规范的要求。。排放压力与开启压力之差，通常用开启压力的百分数来表示。。排放后阀瓣重新与阀座接触，即开启高度变为零时的进口压力。。开启压力与回座压力之差，通常用回座压力与开启压力的百分比表示，只有当开启压力低时采用二者压力差来表示。。阀出口处的压力。额定排放压力。标准规定排放压力的上限值。（16）密封试验压力。进行密封试验的进口压力，在该压力下测量通过关闭件密封面的泄漏率。