SUN插式阀最显著的优点，在于其阀尾端的自由浮动，籍此其紧密配合的工作组件，可在阀体内浮动，减少其对安装扭矩的敏感度以及避免其内部活动组件卡住的可能。清洁或检查插式阀，不必改变阀的即有设定或拆卸任何配管。SUN插式阀内部工作组件，均经热处理，加工耐磨，耐撞击，抗疲劳，使用寿命长。 
 SUN插式阀插孔的独特考虑
为确保阀的可靠性，SUN插式阀插孔考虑了：1螺纹肩部外径可将阀导入插孔，确保对心。2自由浮动部承合插式阀尾端与插孔间的偏心度。3 SUN插式阀浮动式的设计允许较高的安装扭矩，使阀更能确实上紧避免松动或漏油。4肩部平口起止进作用，承受螺纹造成的负载，避免产生任何负荷或导致插式阀变形，确保中心线的对正。5将螺纹置于中位使阀获得###流量能力减少偏心度的影响，并将螺纹负载分布于油路板的深层。6插孔底部的止进部撑持阀的浮动部，而组装铁线仅用于阀之组合。7 SUN油口的一致性，使设计有较大的灵活性以及减少油路板的刀具的需求。
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