Install regulator in the line with the arrow on the body pointing in the direction of flow.
在管道上安装调节阀，将阀体上的箭头指向水流方向。
Install the Watts regulator in the supply line to the boiler with the arrow on the valve body pointing in the direction of flow to the boiler.
在锅炉的供水管道上安装美国瓦茨调节阀，将调节阀阀体上的箭头指向锅炉的水流方向。
Install with the arrow on valve body pointing in the direction of flow.
安装时要使阀体箭头指向水流方向。
Check valves MUST be installed with the valves flow arrow pointing in the direction of the flow.
安装止回阀必须使其阀门流向箭头与流体流向相一致。
Check valves MUST be installed with the valves flow arrow pointing in the direction of the flow.
安装止回阀必须使其阀门流向箭头与流体流向相一致。
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