Fixed or adjustable gas orifice, primary air shutter and mounting boss. Heavy cast iron construction. Simple to install and to maintain.
固定的或可调的燃气孔板，主空气调节挡板，重铸铁结构，容易安装和维护都是该产品的特点。
Fixed or adjustable gas orifice, primary air shutter and mounting boss. Heavy cast iron construction. Simple to install and to maintain.
固定的或可调的燃气孔板，主空气调节挡板，重铸铁结构，容易安装和维护都是该产品的特点。
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