When opening a diaphragm valve , you will feel resistance for approximately one turn , at which point most or all resistance on the handwheel will disappear .
当开启隔膜阀的时候，在大约一圈中，你会感觉到阻力，到了一圈时，大部分或所有阻力都会消失。
2
Recommended Opening Procedure: The diaphragm valve handwheel rotates about 1 1 /4 turns from fully open to closed.
推荐的开启程序：从彻底打开到关闭，隔膜阀手轮旋转大约11/4圈。
3
The invention discloses an electroacoustic transducer which comprises a stationary electric vibrating diaphragm, an opening plate and a plurality of spacing structures.