Z2S10-3-3X力士樂單向閥 德國力士樂優(yōu)質(zhì)商品 特價(jià)銷售 全新原裝 優(yōu)質(zhì)供應(yīng) 是上海韋米機(jī)電設(shè)備有限公司主營產(chǎn)品之一，全國銷售熱線：021-61116812 傳真：021-51334670 聯(lián)系人：何洋，在線QQ報(bào)價(jià)：1875691081
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單向閥有直通式和直角式兩種。直通式單向閥用螺紋連接安裝在管路上。直角式單向閥有螺紋連接、板式連接和法蘭連接三種形式。液控單向閥也稱閉鎖閥或保壓閥，它與單向閥相同，用以防止油液反向流動(dòng)。但在液壓回路中需要油流反向流動(dòng)時(shí)又可利用控制油壓，打開單向閥，使油流在兩個(gè)方向都可流動(dòng)。液控單向閥采用錐形閥芯，因此密封性能好。在要求封閉油路時(shí)，可用此閥作為油路的單向鎖緊而起保壓作用。液控單向閥控制油的泄漏方式有內(nèi)泄式和外泄式二種。在油流反向出口無背壓的油路中可用內(nèi)泄式；否則需用外泄式，以降低控制油壓力。
力士樂節(jié)流閥，rexroth節(jié)流閥，博世力士樂節(jié)流閥，博世流量閥，博世比例閥
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REXROTH單向節(jié)流閥尺寸原理特點(diǎn)介紹
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REXROTH單向節(jié)流閥尺寸原理特點(diǎn)介紹
節(jié)流閥是通過改變節(jié)流截面或節(jié)流長度以控制流體流量的閥門。將節(jié)流閥和單向閥并聯(lián)則可組合成單向節(jié)流閥。節(jié)流閥和單向節(jié)流閥是簡易的流量控制閥，在定量泵液壓系統(tǒng)中，節(jié)流閥和溢流閥配合，可組成三種節(jié)流調(diào)速系統(tǒng)，即進(jìn)油路節(jié)流調(diào)速系統(tǒng)、回油路節(jié)流調(diào)速系統(tǒng)和旁路節(jié)流調(diào)速系統(tǒng)。節(jié)流閥沒有流量負(fù)反饋功能，不能補(bǔ)償由負(fù)載變化所造成的速度不穩(wěn)定，一般僅用于負(fù)載變化不大或?qū)λ俣确€(wěn)定性要求不高的場合。
對節(jié)流閥的性能要求是：
·流量調(diào)節(jié)范圍大，流量一壓差變化平滑；
·內(nèi)泄漏量小，若有外泄漏油口，外泄漏量也要??；
·調(diào)節(jié)力矩小，動(dòng)作靈敏。
節(jié)流閥（throttle valve）的外形結(jié)構(gòu)與截止閥并無區(qū)別，只是它們啟閉件的形狀有所不同。節(jié)流閥的啟閉件大多為圓錐流線型，通過它改變通道截面積而達(dá)到調(diào)節(jié)流量和壓力。節(jié)流閥供在壓力降極大的情況下作降低介質(zhì)壓力之用。
介質(zhì)在節(jié)流閥瓣和閥座之間流速很大，以致使這些零件表面很快損壞-即所謂汽蝕現(xiàn)象。為了盡量減少汽蝕影響，閥瓣采用耐汽蝕材料（合金鋼制造）并制成頂尖角為140~180的流線型圓錐體，這還能使閥瓣能有較大的開啟高度，一般不推薦在小縫隙下節(jié)流。
REXROTH單向節(jié)流閥尺寸原理特點(diǎn)介紹節(jié)流閥具有以下特點(diǎn)：
1、構(gòu)造較簡單，便于制造和維修，成本低。?
2、調(diào)節(jié)精度不高，不能作調(diào)節(jié)使用。?
3、密封面易沖蝕，不能作切斷介質(zhì)用。?
4、密封性較差。?
節(jié)流閥按通道方式可分為直通式和角式兩種；按啟閉件的形狀分，有針形、溝形和窗形三種。節(jié)流閥的安裝與維護(hù)應(yīng)注意以下事項(xiàng)：
該閥經(jīng)常需要操作，因此應(yīng)安裝在易于方面便操作的位置上。?
安裝時(shí)要注意介質(zhì)方向與閥體所標(biāo)箭頭方向保持一致。
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力士樂疊加式雙單向節(jié)流閥、力士樂德國力士樂REXROTH(液壓閥)單向節(jié)流閥、德國力士樂REXROTH(液壓閥)疊加式單向閥、力士樂截止閥-單向閥、力士樂插裝閥單向閥溢流閥、力士樂測試和維修單元、力士樂節(jié)流和單向節(jié)流閥
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