vacuum pressure valves

• 真空压力阀

vacuum pressure valves的用法和样例：

例句

1. If the pressure builds up excessively, the pressure valve opens to relieve the pressure.
   如果油箱内压力过高，则压力阀开启，以降低压力。
2. Release the paint line pressure and switch off the power before doing maintenance with the sprayer or changing accessories.
   在保养喷漆枪或者更换配件之前，松开喷枪压力阀并且关闭电源。