top return pump 回流泵

condensate return pump 凝水回收泵 ; 冷凝水回水泵

return-pump 回压油泵

backwash return pump 反冲洗回流泵

condensation return pump 冷凝回水泵 ; 冷凝水回水泵

top return pump coupling 回流泵联轴器

condensate return pump coupling 凝水回收泵联轴器

return sludge pump 回流污泥泵

boiler return circulating pump 锅炉回水循环泵

return-pump E 回压油泵