描述:美國NUMATICS電磁先導(dǎo)閥4.接管口徑:1/8NPTF或G牙;10-32UNF或M55.可于潤滑或無潤滑系統(tǒng)中使用6.可搭配迭加式減壓閥和速度控制模塊7.可提供手動閥
美國NUMATICS電磁先導(dǎo)閥
閥芯閥套結(jié)構(gòu)特征
閥芯、閥套都用440c不銹鋼制成,經(jīng)精密加工,達(dá)到高精度配合公差,間隙僅1μm。由于是配對研磨拋光組件,故它們沒有互換性,必須成套供應(yīng)。當(dāng)氣流經(jīng)閥套上小孔進(jìn)入,在閥芯、閥套間微小間隙中形成一空氣薄膜,閥芯在閥套中自動對中。當(dāng)閥芯在這種空氣軸承上運(yùn)動時(shí),像懸浮在空氣分子場中一樣,*沒有金屬間的接觸。這種空氣懸浮結(jié)構(gòu)帶來了如下好處:
美國NUMATICS電磁先導(dǎo)閥
(1)芯套間的精密配合形成密封。*摒棄了蘊(yùn)含許多故障因素的“○"形圈動態(tài)密封。
(2)這是一種理論上無磨損的長壽命結(jié)構(gòu)。
(3)空氣軸承允許閥工作在經(jīng)一定過濾得*無潤滑場合。與其它號稱無油潤滑元件相比(實(shí)際上裝配時(shí)已涂上一層不易揮發(fā)的潤滑脂),這是一種真正意義上的無油潤滑。
(4)移動閥芯啟動力極小且操作力恒定,這是制造高質(zhì)量直動閥的要條件。它可不依賴先導(dǎo)壓力使直動閥工作在真空到21bar(甚35bar)場合。
(5)芯套相同材質(zhì),熱膨脹系數(shù)*一樣,在高溫下也能確??諝廨S承的存在。
ASCO is the worldwide leader in the design and manufacture of quality solenoid valves. ASCO products are designed to control the flow of air, gas, water, oil and steam. Our heritage of innovation has resulted in an extensive line of ASCO products that range from two position on/off valves to entire flow control solutions designed to meet requirements of thousands of customers.
Whether you need a minor modification of a core product or a complete flow control solution, we can help.