隔离阀,开关阀

属自动阀类,又称逆止阀,单向阀,回流阀或隔离阀.
止回阀(check valve)属自动阀类,又称逆止阀,单向阀,回流阀或隔离阀.
dkj41h40c真空法兰截止阀nkj41h40c真空隔离截止阀
nkz44y64inkz44y100i真空隔离闸板阀高温高压真空闸阀
隔离阀