valve cock

英 [vælv kɒk]

美 [vælv kɑːk]

阀栓；龙头阀

This is a gate valve ( check valve, butterfly valve, cut-off valve, magnetic valve, remote valve, relief valve, throttle valve, cock).
这是一个闸阀（止回阀、蝶阀、切断阀、电磁阀、遥控阀、安全阀、节流阀、旋塞）。
The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer.
带测试旋塞的关闭阀安装在防回流阀的进口一侧。
Connect bypass hose between vent needle valve and loosely connect to test cock No.1.
在排气针形阀上连接旁路软管，并将其松散连接到测试旋塞1号上。
The drain screw of fuel oil sludge tank to be changed with valve or cock.
燃油沉淀柜的排放螺杆应改为阀或旋塞。
Open upstream slowly, fill the valve and bleed the air through Test cock 2, 3 and 4.
慢慢开启上游，注满阀门，通过测试旋塞2，3和4号排放空气。
The characteristics and application of the cock valves were introduced in detail in view of the fact that oil seal cock valve and pressure equilibrium conical oil seal cock valve were in use worldwide in oil and gas transportation piping.
并根据世界各国的输油及输气管线广泛采用油封式旋塞阀和压力平衡式倒锥油密封旋塞阀的情况，重点介绍其特点和应用。