Z2FS6-2-44/2QV REXROTH節流閥

節流閥特點

1、構造較簡單，便于制造和維修，成本低。

2、調節精度不高，不能作調節使用。

3、密封面易沖蝕，不能作切斷介質用。

4、密封性較差。

節流閥按通道方式可分為直通式和角式兩種；按啟閉件的形狀分，有針形、溝形和窗形三種。節流閥的安裝與維護應注意以下事項：

該閥經常需要操作，因此應安裝在易于方面便操作的位置上。

安裝時要注意介質方向與閥體所標箭頭方向保持一致。

由于節流閥的流量不僅取決于節流口面積的大小，還與節流口前后的壓差有關，閥的剛度小，故只適用于執行元件負載變化很小且速度穩定性要求不高的場合。

對于執行元件負載變化大及對速度穩定性要求高的節流調速系統，必須對節流閥進行壓力補償來保持節流閥前后壓差不變，從而達到流量穩定。

Z2FS6-2-44/2QV REXROTH節流閥

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力士樂REXROTH單向節流閥Z2FS 16

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Z2FS6-2-44/2QV REXROTH節流閥

對節流閥的性能要求是：

·流量調節范圍大，流量一壓差變化平滑；

·內泄漏量小，若有外泄漏油口，外泄漏量也要��；

·調節力矩小，動作靈敏。

節流閥(throttle valve)的外形結構與截止閥并無區別，只是它們啟閉件的形狀有所不同。節流閥的啟閉件大多為圓錐流線型，通過它改變通道截面積而達到調節流量和壓力。節流閥供在壓力降極大的情況下作降低介質壓力之用。

介質在節流閥瓣和閥座之間流速很大，以致使這些零件表面很快損壞－即所謂汽蝕現象。為了盡量減少汽蝕影響，閥瓣采用耐汽蝕材料（合金鋼制造）并制成頂尖角為140～180的流線型圓錐體，這還能使閥瓣能有較大的開啟高度，一般不推薦在小縫隙下節流。

Z2FS6-2-44/2QV REXROTH節流閥

力士樂REXROTH雙節流單向閥，直接操作Z2FS 6...XC

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力士樂REXROTH雙節流單向閥Z2FS 6

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Z2FS6-2-44/2QV REXROTH節流閥