CG2V-8BK,CG2V-8BM,CG2V-8BW,CG2V-8威格士溢流閥

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，穩(wěn)壓，系統(tǒng)卸荷和**保護作用。溢流閥在裝配或使用中，由于O形密封圈、組合密封圈的損壞，或者安裝螺釘、管接頭的松動，都可能造成不應(yīng)有的外泄漏。
如果錐閥或主閥芯磨損過大，或者密封面接觸不佳，還將造成內(nèi)泄漏過大，甚至影響正常工作。
溢流閥的主要作用：
定壓溢流作用：在定量泵節(jié)流調(diào)節(jié)系統(tǒng)中，定量泵提供的是恒定流量。當(dāng)系統(tǒng)壓力增大時，會使流量需求減小。此時溢流閥開啟，使多余流量溢回油箱，保證溢流閥進口壓力，即泵出口壓力恒定（閥口常隨壓力波動開啟）。
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