德國力士樂節流和單向節流閥是氣流只能一個方向流動而不能反向流動的方向控制閥。其工作原理與液壓單向閥一樣。壓縮空氣從P口進入，克服彈簧力和摩擦力使單向閥閥口開啟，壓縮空氣從P流至A；當P口無壓縮空氣時，在彈簧力和A口(腔)余氣力作用下；閥口處于關閉狀 態，使從A至P氣流不通。單向閥應用于不允許氣流反向流動的場合，如空壓機向氣罐充氣 時，在空壓機與氣罐之間設置一單向閥，當空壓機停止工作時，可防止氣罐中的壓縮空氣回流到空壓機。單向閥還常與節流閥、順序閥等組合成單向節流閥、單向順序閥使用。4WE6D62/EW230N9K4 4WE6D52/OFBW110RNEX 4WE6D52/BW110RNEX 4WE6D62/6EG24VN9K4
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4WE6D6X/OFSG24N9K4 4WE6D6X/OFEG24N9K4 4WE6D62/EG24N9K4 4WE6D6X/OFEG24N9K4/B18
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電磁閥4WE6B系列 4WE6B61/EG24N9K4 4WE6B62/EG24N9K4 4WE6D62/EG24N9K4
4WE10G33/CG24N9K44WE6Y62/EW230N9K4 4WE10J33/CW230N9K4 4WE10H33/CW230N9K4 4WE10G33/CW230N9K4
電磁閥4WE6E系列 4WE6E62/EG24N9K4 4WE6E62/EW230N9K4 4WE6E6X/EG24N9K4
4WE6E50/AW220NZ5L 4WE6E6X/EG24N9K4/V 4WE6E6X/EG24N9K45058730
4WE6E6X/BG24N9K4_5031339 4WE6E6X/AG24N24 4WE6EA62/EG24N9K4/B10 4WE6E52/AG24NZ4
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電磁閥4WE6C系列 4WE6C61/EW230N9K4 4WE6C6X/EG24N9K4 4WE6C6X/EG24N9Z45L
4WE6C6X/OFEG24N9K4 4WE6C6X/EG24N9K4 4WE6C6XG24N25L 4WE6C6X/OFEG24N9K4R900564107
4WE6C-5X/AG24NZ4 4WE6C50B/AG 24Z4 4WE6C53/0FAG24N24 4WE6C62/EG24N9K4
電磁閥4WE6A系列 4WE6A6X/EW230N9K4 4WE6HA62/EG24N9K4 4WE6A62/EG24N9K4
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電磁閥4WE10系列 4WE10J32/CW230N9K4 4WE10J3X/CG24N9K4/B10 4WE10D30/OFCG24N9K4
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4WE10Y6X/CG24N9Z4 4WE10Y3X/CG24N9K4+Z4 4WE10J3X/CG24N9K4+Z4 4WE10J3X/CG24N9K4/V
4WE10C3X/CG24N9K4 4WE10D3X/CG24N9K4+Z4 4WE10J33/CG24N9K4 4WE10E33/CG24N9K4
4WE10D33/CG24N9K4 4WE10J33/CG24N9K4/A06 4WE10D30/OFCG24N9Z4 4WE10G20/AW220NE
4WE10D3X/OFCG24N9K4 4WE10D73-3X/G24N9K4/A12 4WE10J3X/CW230N9K4 4WE10C3X/CW230N9K4 4WE10G3X/CG24N9K44WE10J45/6EG24N9ETS2K4/B10 4WE10D33/OF24N9K4 4WE10D33/CG24N9K4 4WE10D-3X/OFCW110N9K4/V M-3SED6UK1X/350CG24N9K4  M-3SEW6U3X/420MG24N9K4 M-3SEW6U3X/630MG24N9K4 
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電磁閥4WRE系列4WREE6V16-2X/G24 4WREE6W1-08L-2X/G24K31/F1V