首先关闭位于进水阀之前的手动关闭阀，然后将系统压力降到12psi(或其他预设压力)，几个小时后，观察系统的压力上升状态。
First close manual shutoff located before the fill-valve, then draw system pressure down to 12psi (or other preset pressure) and observe system for pressure buildup several hours later.
预设生活用水的水量的压力足以支撑给排水和洁具系统的使用要求。
It's supposed that water capacity and pressure of domestic water is adequate to meet the requirement of plumbing and sanitary system.
该型号25逆转继电器是专为应用程序要求的输出，等于减去一个变量信号压力手动预设弹簧负载。
The Model 25 Reversing Relay is designed for applications requiring an output that equals a manually preset spring load minus a variable signal pressure.
这种气动继电器输出提供了压力，表示输入信号压力加上预设的偏见高输出流量。
This pneumatic relay provides high output flow at an output pressure that represents the input signal pressure plus a preset bias.
压力调节器连接的电热水器出口侧的出口保持水箱的水压力超过预设的限制，因为它。
Pressure regulators are connected to the outlet side of the water heater to keep the water pressure from exceeding a preset limit as it exits the tank.
轧制压力的计算考虑了奥氏体再结晶变化的修正函数，使力能预报及辊缝预设精度明显提高；
The calculation of the rolling poweradopts to consider the variety of the recrystallization in austenite the correction function, improve the accuracy forecast of power and energery;
轧制压力的计算考虑了奥氏体再结晶变化的修正函数，使力能预报及辊缝预设精度明显提高；
The calculation of the rolling poweradopts to consider the variety of the recrystallization in austenite the correction function, improve the accuracy forecast of power and energery;
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