这种类型的泵采用内置密封,JM系列使用机械密封,JO系列使用O型圈密封。结构简单,拆装方便,寿命长,性能好,是目前非常受欢迎的机型。
These models use inner seals , JM for mechanical sealing and JO for O-ring sealing. Simple structures making dismantling and reassembly easy and providing along effective life with high performance make these models the most popular.
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