上海SHLIXIN立新防暴電磁閥

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上海SHLIXIN立新防暴電磁閥

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立新FB-4WE6防暴電磁換向閥
 
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上海立新?lián)Q向閥  上海立新壓力閥  立新電磁閥

立新比例壓力閥  立新放大器  立新流量閥  立新比例閥

立新方向閥  立新插裝閥  立新單向閥 立新梭閥

立新多位置油路塊  立新隔爆閥  立新螺紋插裝閥

立新壓力繼電器  立新壓力表開關(guān)

先導(dǎo)式溢流閥

比例閥是按比例控制的,他的控制器實(shí)際是一個(gè)放大器,主要用于加強(qiáng)系統(tǒng)的調(diào)節(jié)作用,增益K越大,調(diào)節(jié)作用越強(qiáng),系統(tǒng)的快速響應(yīng)性越好,但K值過(guò)大也會(huì)導(dǎo)致系統(tǒng)不穩(wěn)定

調(diào)節(jié)閥和減壓閥原理不相同,。 減壓閥采用控制閥體內(nèi)的啟閉件的開度來(lái)調(diào)節(jié)介質(zhì)的流量，將介質(zhì)的壓力降低,，同時(shí)借助閥后壓力的作用調(diào)節(jié)啟閉件的開度,，使閥后壓力保持在一定范圍內(nèi)，并在閥體內(nèi)或閥后噴入冷卻水,，將介質(zhì)的溫度降低