| 1. | One valve is the pressure-relief valve, which prevents pressure in the tank from rising too high .
一个是减压阀，以防止油箱中的压力过高。 |
| 2. | Other cars use a sealed cap and have separate vacuum-and pressure-relief valves .
另一种类型的汽车使用密封式油箱盖，并带有独立的真空--压力减压阀。 |
| 3. | Specification for pressure - reducing valves for steam service
蒸汽供应减压阀规范 |
| 4. | Performance requirements for water pressure reducing valves
水压减压阀的性能要求 |
| 5. | Pressure relief valves for lpg tanks - ancillary equipment
Lpg罐用减压阀.辅助设备 |
| 6. | Pressure relief valves for lpg tanks - ancillary equipment
Lpg罐用减压阀.辅助设备 |
| 7. | Methods of performance test for pressure reducing valves
减压阀性能试验方法 |
| 8. | Marine steel flanged steam pressure reducing valves
船用法兰铸钢蒸汽减压阀 |
| 9. | Direct acting pressure reducing and pressure restricting valves
直接控制的减压阀和压力控制阀 |
| 10. | Pressure relief valves and vacuum relief valves
减压阀和真空截止阀 |
