JA安全阀说明书
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J A安全阀说明书
The Standardization Office was revised on the afternoon of December 13, 2020
JA-3剪销安全阀JA-3 SHEAR RELIEF VALVE
使用说明
Operation Introduction
JA-3剪销安全阀
JA-3 Shear Relie f Valve
JA-3剪销安全阀法兰接头
JA-3 Shear Relief Valve Flange Union Joint
Item No. (1) (2) (3)
JA-3剪销安全阀结构如上图所示。当压力高出额定知时，（3）活塞升起，顶起剪切板（10）以剪短剪切销（11）从而快速排空压力。
JA-3剪销安全阀靠改变剪切销的位置进而达到排出压力的效果，操作简单。
所标示的压力被可在剪切板上。当要调节压力时，只要把剪切销插到相对应的孔里即可。注意，一个剪切销只允许插入一个剪切板中。缸套尺寸同剪销安全阀压力变化相关。
禁止使用铁丝，焊条或替他物质代替。那将安全阀压力受到影响而引发事故。
The structure of JA-3 shear relief valve is showed above. When the pressure is more than the rated data, the piston⑶ raises, jacks up the shear board⑽ to break off the shear pin⑾ so as to empty the sap flow promptly.
JA-3 shear relief valve change the leaked pressure with the poison movement of shear pin. It operates simply.
Pressure level mark is carved on the shear board. You only need insert the shear pin into the relative hole when you want to adjust the operation pressure. Note, only one shear pin is allowed to insert in shear board. Liner size is changed relatively adjust the relief valve pressure. The use of steel wire, welding rod or other materials is forbidden. That will effect pressure of relief valve and cause the accident.