| 1. | Several different types of valves are in use. some are back pressure valves .
有几种不同的阀在使用中，有些是反向压力阀。 |
| 2. | 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。 |
| 3. | Pressure valve type b pn 16 , self - locking
B型pn 16自锁紧压力阀 |
| 4. | Ships and marine technology - pressure vacuum valves for cargo tanks
船舶与海上技术.散货船真空压力阀 |
| 5. | 2d digital pressure control valve
数字压力阀 |
| 6. | Gas cylinders - residual pressure valves - general requirements and type testing
储气瓶.剩余压力阀.一般要求和型式试验 |
| 7. | Gas cylinders - residual pressure valves - general requirements and type testing
储气瓶.剩余压力阀.一般要求和类型试验 |
| 8. | 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。 |
| 9. | Devices with moving parts for the prevention of contamination of water by backflow - specification for terminal anti - vacuum valves of nominal size up to and including dn 54
防止回流水污染用带动件装置.第2部分:公称尺寸小于等于dn54的终端反压力阀规范 |
| 10. | Devices with moving parts for the prevention of contamination of water by backflow - specification for combined check and anti - vacuum valves of nominal size up to and including dn 42
防止回流水污染用带动件装置.第4部分:公称尺寸小于等于dn42的组合单向阀和反压力阀规范 |
