At the end of the pump valves, cast iron pipe and other items to be rusty rust, and then coated with butter, dry place on the preservation, re-use for winter and spring.

水泵的底阀、弯管等铸铁件，生了锈的要除锈，然后再涂上黄油，放在干燥处保存，以备冬春再用。

youdao

At the end of the pump valves, cast iron pipe and other items to be rusty rust, and then coated with butter, dry place on the preservation, re-use for winter and spring.

水泵的底阀、弯管等铸铁件，生了锈的要除锈，然后再涂上黄油，放在干燥处保存，以备冬春再用。

youdao