美國PARKER電控4/3或4/2通換向閥D41VW系列
Parker 的閥產品包括液壓閥、氣動閥、儀表閥、制冷閥和航空航天閥，有各種類型和配置。Parker 閥品牌名稱包括 Apitech、Colorflow、 Commercial、Denison、Gresen、IQAN、 Manatrol、Manapak、Schrader Bellows、 Republic、Sinclair Collins、Skinner、SPORLAN 和 Sterling。Parker 各種型號的閥產品可通過手動、電機自動或電磁方式操作，且安裝配置可以是基礎安裝配置、同軸安裝配置或歧管安裝配置。
03D41vw，標準和位置控制
該D 31，41，d81，d91和d111電控4/ 3或4 /2通換向閥。閥門是由一個ng6先導閥。
壓力和流量的先導油有重大影響的反應時間在后臺主舞臺。
為了保證節省開關的閥芯請選擇適當的先導油供應和排水管選擇。（盤連接點不需要外部壓力或整體式單向閥。線軸負交叉位置相同的選項的建議。）
zui小試驗壓力必須保證所有工作條件下的換向閥。
美國PARKER電控4/3或4/2通換向閥D41VW系列D41VW001C1NJWTI6N
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六通換向閥主要由閥體、密封組件、凸輪、閥桿、手柄和閥蓋等零部件組成（圖1）。閥門由手柄驅動,通過手柄帶動閥桿與凸輪旋轉,凸輪具有定位驅動與鎖定密封組件的開啟與關閉功能。手柄逆時針旋轉,兩組密封組件分別在凸輪的作用下關閉下端的兩個通道,上端的兩個通道分別與管道裝置的進口相通。反之,上端的兩個通道關閉,下端兩個通道與管道裝置的進口相通,實現了不停車換向。
六通換向閥1上閥蓋 2手柄 3閥桿 4凸輪 5密封組件 6閥蓋 7閥體
（1）六通閥的閥體由隔板分成兩腔,每腔都有3個通道,中間為進油口,兩端為出油口。閥體為碳鋼板焊結構,體積小,質量輕,結構緊湊,提高了材料的利用率,縮短了生產周期,降低了成本。密封面堆焊不銹鋼,防銹耐腐蝕,密封面經過精加工后拋光研磨,表面粗糙度Ra≤0.8μm。
（2）六通閥有兩組密封組件。每組密封組件（圖2）由閥瓣、密封圈、調整塊、調節螺釘、夾板和螺栓組成。閥瓣為碳鋼板焊件,設有加強筋,即增加閥瓣強度又起導向作用,保證每組閥瓣間的同軸度。閥瓣上鑲嵌聚氨脂橡膠圈,該材料具有耐油、耐磨損、性能穩定、密封良好和使用壽命長的特點。在凸輪的作用下,密封圈的球面與閥體密封面相接觸產生擠壓彈性變形,達到密封效果。調整塊和調節螺釘在兩組密封組件不能同步到位時可起調整作用,確保各通道密封性能同步到位。
密封組件1夾板 2螺栓 3調整塊 4閥瓣 5密封圈 6調整螺釘
（3）閥桿與閥體隔板和上閥蓋間的軸向密封采用O形圈。
（4）閥體隔板及上閥蓋軸孔部位鑲有銅套,可減小與O形圈間的摩擦力矩,密封組件開啟與關閉靈活,操作力矩小。
（5）上閥蓋設有指示牌及限位螺釘,閥桿上安裝指針,明確指示各通道的接通狀況,易于操作。