我们建议采用型号DET膨胀罐，美国瓦茨Governor 80球形旋塞带整体热膨胀安全阀，或一个530C刻度压力安全阀。
We suggest the use of a model DET expansion tank, the Watts Governor 80 ball cock with integral thermal expansion relief valve, or a 530C calibrated pressure relief valve.
必须按照图示安装压力安全阀，以防止由于热膨胀产生的过高压力。
A pressure relief valve must be installed as shown to prevent excess pressure by thermal expansion.
必须按照图示安装压力安全阀，以防止由于热膨胀产生的过高压力。
A pressure relief valve must be installed as shown to prevent excess pressure by thermal expansion.
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