The function of the valve is to release any excesspressure from the system caused by thermal expansion of the water.
这种阀门的作用在于释放由于水的热膨胀导致的过大的压力。
2
If flow rate is in excess of that specified, turn indicator knob towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart.
如果流量超过规定,将指示器旋钮旋转到关闭位置,注意压降和阀门设置,并从流量表中确定新的流量。
3
If flow rate is in excess of that specified, turn indicator towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart.