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上海弘佩液壓設備有限公司
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Rexroth德國力士樂、Parker美國派克、HAWE德國哈威、Moog美國穆格、Vickers美國威格士、Atos意大利阿托斯、DENISON美國丹尼遜、HYDAC德國賀德克、YUKEN日本油研等液壓電子產品。 歡迎新老客戶來咨詢

力士樂雙向節流閥Z2FS6B34X/1QV 產品廣泛應用于鋼鐵、冶金、石油化工、船舶制造、煤炭、水泥、電力、汽車、工程機械、食品、林業、紡織、皮革、造紙等行業領域節流閥(Choke 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－即所謂氣蝕現象。 殷小姐15618361561

力士樂雙向節流閥Z2FS6B34X/1QV

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VT-VSPA2-1-20-VO-T1為了盡量減少氣蝕影響，閥瓣采用耐氣蝕材料（合金鋼制造）并制成**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。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
力士樂雙向節流閥Z2FS6B34X/1QV 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。
節流口堵塞原因：
1、油液中的機械雜質或因氧化析出的膠質、瀝青、碳渣等污物堆積在節流縫隙處。
2、由于油液老化或受到擠壓后產生帶電的極化分子，而節流縫隙的金屬表面上存在電位差，
故極化分子被吸附到縫隙表面，形成牢固的邊界吸附層，吸附層厚度一般為5~8微米，
因而影響了節流縫隙的大小。以上堆積、吸附物增長到一定厚度時，會被液流沖刷掉，
隨后又重新附在閥口上。這樣周而復始，就形成了流量的脈動。
3、閥口壓差較大時，因閥口溫度高，液體受擠壓的程度增強，金屬表面也更易受摩擦作用而形成電位差，
因此壓差大時容易產生堵塞現象。

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