直通阀 [机] straightway valve ; pass valve ; straight-through valve

直通单向阀 inline check valve ; straightway check valve ; straight check valve

直通型闸阀 through conduit gate valve ; through conduit gdined vingve

直通式隔膜阀 straight way diaphragm valve

直通快动阀 straight-through fast acting valve ; through fast acting valve

管式直通单向阀 CI

直角三通阀 right angle three way valve

直通截止阀 through shut-off valve

直通式隔阂阀 straight way diaphragm vingve

直通式单向阀 straight one-way valve ; HDIN