華德?lián)Q向閥4WE6J61B/CW220-50NZ5*

華德?lián)Q向閥4WE6J61B/CW220-50NZ5*

北京華德液壓全系列 具體型號

北京華德?lián)Q向閥部分型號如下：

4WE6G61B/CW220-50N9Z5 4WEH10C20B/6AW220-50NEZ4

4WE6G61B/CW220-50N9Z5L 4WEH10C20B/6AW220-50NEZ5

4WE6G61B/CW220-50NDKL 4WEH10C20B/6AW220-50NEZ5L

4WE6G61B/CW220-50NDL 4WEH10C20B/6AW220-50NTZ4

4WE6G61B/CW220-50NZ5 4WEH10C20B/6AW220-50NTZ5

4WE6G61B/CW220-50NZ5L 4WEH10C20B/6AW220-50NTZ5L

4WE6H50B/AG24N         4WEH10C20B/6AW220-50NZ4

4WE6H50B/AW220-50N 4WEH10C20B/6AW220-50NZ5

4WE6H50B/BG24N         4WEH10C20B/6AW220-50NZ5L

4WE6H50B/BW220-50N 4WEH10C20B/6EW220-50NEZ4

4WE6H61B/CG12N9K4 4WEH10C20B/6EW220-50NEZ5

4WE6H61B/CG12N9Z4 4WEH10C20B/6EW220-50NEZ5L

4WE6H61B/CG12N9Z5 4WEH10C20B/6EW220-50NZ4

4WE6H61B/CG12N9Z5L 4WEH10C20B/6EW220-50NZ5

4WE6H61B/CG12NK4 4WEH10C20B/6EW220-50NZ5L

4WE6H61B/CG12NZ4 4WEH10C20B/O6AG24NETZ4

4WE6H61B/CG12NZ5 4WEH10C20B/O6AG24NETZ5

4WE6H61B/CG12NZ5L 4WEH10C20B/O6AG24NETZ5L

4WE6H61B/CG24N9K4 4WEH10C20B/O6AG24NEZ4

4WE6H61B/CG24N9Z4 4WEH10C20B/O6AG24NEZ5

4WE6H61B/CG24N9Z5 4WEH10C20B/O6AG24NEZ5L

4WE6H61B/CG24N9Z5L 4WEH10C20B/O6AG24NTZ4

4WE6H61B/CG24NK4 4WEH10C20B/O6AG24NTZ5

4WE6H61B/CG24NZ4 4WEH10C20B/O6AG24NTZ5L

4WE6H61B/CG24NZ5 4WEH10C20B/O6AG24NZ4

4WE6H61B/CG24NZ5L 4WEH10C20B/O6AG24NZ5

4WE6H61B/CW220-50N9K4 4WEH10C20B/O6AG24NZ5L

北京華德液壓全系列 具體型號

北京華德?lián)Q向閥部分型號如下：

4WE6H61B/CW220-50N9Z4 4WEH10D20B/6AW220-50NETZ4

4WE6H61B/CW220-50N9Z5 4WEH10D20B/6AW220-50NETZ5

4WE6H61B/CW220-50N9Z5L 4WEH10D20B/6AW220-50NETZ5L

4WE6H61B/CW220-50NK4 4WEH10D20B/6AW220-50NEZ4

4WE6H61B/CW220-50NZ4 4WEH10D20B/6AW220-50NEZ5

4WE6H61B/CW220-50NZ5 4WEH10D20B/6AW220-50NEZ5L

4WE6H61B/CW220-50NZ5L 4WEH10D20B/6AW220-50NTZ4

4WE6J50B/AG24N         4WEH10D20B/6AW220-50NTZ5

4WE6J50B/AW220-50N 4WEH10D20B/6AW220-50NTZ5L

4WE6J50B/BG24N         4WEH10D20B/6AW220-50NZ4

4WE6J50B/BW220-50N 4WEH10D20B/6AW220-50NZ5

4WE6J61B/CG12N9DKL 4WEH10D20B/6AW220-50NZ5L

4WE6J61B/CG12N9DL 4WEH10D20B/6EW220-50NETZ4

4WE6J61B/CG12N9Z4 4WEH10D20B/6EW220-50NETZ5

4WE6J61B/CG12N9Z5 4WEH10D20B/6EW220-50NETZ5L

4WE6J61B/CG12N9Z5L 4WEH10D20B/6EW220-50NEZ4

4WE6J61B/CG12NDKL 4WEH10D20B/6EW220-50NEZ5

4WE6J61B/CG12NDL 4WEH10D20B/6EW220-50NEZ5L

4WE6J61B/CG12NZ4 4WEH10D20B/6EW220-50NTZ4

4WE6J61B/CG12NZ5 4WEH10D20B/6EW220-50NTZ5

4WE6J61B/CG12NZ5L 4WEH10D20B/6EW220-50NTZ5L

4WE6J61B/CG24N9DKL 4WEH10D20B/6EW220-50NZ4

4WE6J61B/CG24N9DL 4WEH10D20B/6EW220-50NZ5

4WE6J61B/CG24N9Z4 4WEH10D20B/6EW220-50NZ5L

4WE6J61B/CG24N9Z5 4WEH10E20B/6AW220-50NETZ4

4WE6J61B/CG24N9Z5L 4WEH10E20B/6AW220-50NETZ5

4WE6J61B/CG24NDKL 4WEH10E20B/6AW220-50NETZ5L

在調(diào)節(jié)節(jié)流部分時，出油腔流量不發(fā)生變化，其主要原因是閥芯徑向卡住和節(jié)流部分發(fā)生故障等。減壓閥芯或節(jié)流閥芯在全關(guān)閉位置時，徑向卡住，會使調(diào)節(jié)節(jié)流口開度而出油腔的流量不發(fā)生變化。當(dāng)節(jié)流調(diào)節(jié)部分發(fā)生故障時，會使調(diào)節(jié)螺桿不能軸向移動，使出油腔流量也不發(fā)生變化。發(fā)生閥芯卡住或節(jié)流調(diào)節(jié)部分故障時，應(yīng)進(jìn)行清洗和修復(fù)。

節(jié)流調(diào)節(jié)型調(diào)速閥當(dāng)節(jié)流口調(diào)整好鎖緊后，有時會出現(xiàn)流量不穩(wěn)定現(xiàn)象，特別在小穩(wěn)定流量時易發(fā)生，其主要原因是鎖緊裝置松動，節(jié)流口部分堵塞，油溫升高，進(jìn)、出油腔小壓差過低和進(jìn)、出油腔接反等。

1、要保證調(diào)速閥對流量（即對執(zhí)行元件油缸的速度）的控制精度，需要保證一定的壓差（進(jìn)出油腔小壓差，指節(jié)流口全開，通過公稱流量時，閥進(jìn)出油腔的壓差）；普通調(diào)速閥，其壓差不應(yīng)小于0. 5MPa。高精度調(diào)速閥，其壓差高達(dá)1MPa。另外，環(huán)境溫度變化比較大時，就選用帶溫度補(bǔ)償?shù)恼{(diào)速閥。注意：壓差過低，減壓閥部分不能正常工作，就不能對節(jié)流閥進(jìn)行有效的壓力補(bǔ)償，因而影響 液壓站液壓系統(tǒng)流量的穩(wěn)定。

通過閥的實際流量確定小了，將導(dǎo)致閥的規(guī)格（容量）選得偏小、使閥的局部壓力損失過大，引起油溫過高等弊端，嚴(yán)重時會造成液壓站液壓系統(tǒng)不能正常工作。要以通過閥的實際流量（不是按泵的流量），作為選擇閥的主要參數(shù)之一。

3、控制閥的使用壓力、流量，不要超過其額定值，如流量控制閥的使用壓力、流量超過了其額定值，就易引起液壓卡緊和液動力，對控制閥工作品質(zhì)產(chǎn)生不良影響。

4、注意普通調(diào)速閥啟動時存在著流量跳躍現(xiàn)象，這種流量跳躍現(xiàn)象會影響執(zhí)行元件油缸速度的平穩(wěn)性。為此，應(yīng)采取相應(yīng)的措施。