溢流閥是一種液壓壓力控制閥，在液壓設(shè)備中主要起定壓溢流作用，穩(wěn)壓，系統(tǒng)卸荷和安全保護(hù)作用。
1.起溢流作用
用定量泵供油時(shí)，它與節(jié)流閥配合，可以調(diào)節(jié)和平衡液壓系統(tǒng)中的流量。在這種場(chǎng)合下，閥門(mén)經(jīng)常隨著壓力的波動(dòng)而開(kāi)啟，油液經(jīng)閥門(mén)流回油箱，起著定壓下的溢流作用DBD溢流閥
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