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美國(guó)派克PARKER液壓閥[PARKER換向閥]Parker派克D3W/D3DW系列帶電感位置控制電磁換向閥是一種通過(guò)電磁鐵直接操縱的帶電感位置控制的2位4通換向閥，可被用作監(jiān)控閥?？梢杂羞x擇的對(duì)初始位置或終點(diǎn)位置進(jìn)行監(jiān)控。只有單電磁鐵閥可以用于位置控制。斷電時(shí)換向閥的可靠位置為初始位置，其通過(guò)復(fù)位彈簧來(lái)保持的。美國(guó)派克PARKER液壓閥液壓閥（即控制元件）在液壓系統(tǒng)中控制和調(diào)節(jié)液體的壓力、流量和方向。根據(jù)控制功能的不同，液壓閥可分為村力控制閥、流量控制閥和方向控制閥。壓力控制閥又分為益流閥（安全閥）、減壓閥、順序閥、壓力繼電器等;流量控制閥包括節(jié)流閥、調(diào)整閥、分流集流閥等;方向控制閥包括單向閥、液控單向閥、梭閥、換向閥等。根據(jù)控制方式不同，液壓閥可分為開關(guān)式控制閥、定值控制閥和比例控制閥。
液壓閥可分為普通液壓控制閥、伺服控制閥、比例控制閥。根據(jù)安裝形式不同，液壓閥還可分為管式、板式和插裝式等若干種。
液壓閥的基本結(jié)構(gòu)主要包括閥芯、閥體和驅(qū)動(dòng)閥芯在閥體內(nèi)做相對(duì)運(yùn)動(dòng)的操縱裝置。閥芯的主要形式有滑閥、錐閥和球閥；閥體上除有與閥芯配合的閥體孔或閥座孔外，還有外接油管的進(jìn)、出油口和泄油口；驅(qū)動(dòng)閥芯在閥體內(nèi)做相對(duì)運(yùn)動(dòng)的裝置可以是手調(diào)機(jī)構(gòu)，也可以是彈簧或電磁鐵，有些場(chǎng)合還采用液壓力驅(qū)動(dòng)。 美國(guó)派克PARKER液壓閥在工作原理上，液壓閥是利用閥芯在閥體內(nèi)的相對(duì)運(yùn)動(dòng)來(lái)控制閥口的通斷及開口的大小，以實(shí)現(xiàn)壓力、流量和方向控制。液壓閥工作時(shí)，所有閥的閥口大小、閥進(jìn)、出油口間的壓差以及通過(guò)閥的流量之間的關(guān)系都符合孔口流量公式（q＝KA·Δp m），只是各種閥控制的參數(shù)各不相同而已。

美國(guó)派克PARKER液壓閥，PARKER公司如下：

美國(guó)派克PARKER液壓閥[PARKER換向閥]型號(hào)如下:

6PDSH102CTA240LD-6TDSH102CTD012LDDSH102CTD024LD-A8TDSH102CTD024LD-6PDSH102CTD024LD-8BDSH102CTD024LWP-8PDSH102CTVDSH102CTVA120LC-4PDSH102CTVA120LC-6PDSH102CVDSH102CVD024LDDSH102CVD024LD-A6PDSH102NDSH102NA120LCDSH102NA120LC-A8PDSH102NA120LC-4PDSH102NA120LC-6TDSH102NA120LC-8PDSH102NA120LC-8TDSH102NA120LDDSH102NA120LD-8PDSH102NA120LD-8TDSH102NA240LDDSH102NA240LD-8BDSH102ND012LDDSH102ND012LD-A6TDSH102ND012LD-6PDSH102ND012LP-A8TDSH102ND012LWDSH102ND012LW-A8TDSH102ND024LC-8PDSH102ND024LC-8TDSH102ND024LDDSH102ND024LD-6BDSH102ND024LD-6PDSH102ND024LD-8BDSH102ND024TGR-A6TDSH102NTDSH102NTA120LCDSH102NTA120LDDSH102NTD012LDDSH102NTD024LC-8TDSH102NTD024LDDSH102NTD024LD-6BDSH102NTVDSH102NTVA120LC-6PDSH102NVDSH102NVD024LDDSH102NVD024LD-A8PDSH103DSH103ADSH103AA120LCDSH103AA120LC-8PDSH103AD012LDDSH103AD024LDDSH103AD024LD-6TDSH103AD024LWD6DSH103AD024LWS-6TDSH103ATDSH103AVD024LWDSH103A120LCDSH103A120LC-4PDSH103A120LC-6PDSH103A120LC-8PDSH103A120LDDSH103A120LD-6TDSH103A240LC-8PDSH103BDSH103BA120LDDSH103BD012LC-A6TDSH103BD012LDDSH103BD024LC-A6TDSH103BD024LDDSH103BD024LW-8TDSH103BTDSH103BTA120LCDSH103BTD024LDDSH103BTD024LWDRDSH103BTND024LC-8PDSH103BTVD024LDDSH103BVDSH103D012LDDSH103D012LD-A6TDSH103D012LD-6TDSH103D012LW-4PDSH103D012LWPDSH103D024LCDSH103D024LC-4PDSH103D024LDDSH103D024LD-A8TDSH103D024LD-6PDSH103D024LD-6TDSH103D024LD-8BDSH103D024LD-8TDSH103D024LWDSH103D024LWDDSH103D024LWD6DSH103D024LWPDSH103D024LWP-8BDSH103NDSH103NA120LC-A6TDSH103NA120LD-A8TDSH103ND012LC-6PDSH103ND012LD-A6TDSH103ND012LD-8TDSH103ND012LPDSH103ND024LDDSH103ND024LD-6PDSH103ND024LWDSH103NTDSH103NTVDSH103NVDSH103NVD024LD-6PDSH103TDSH103TA120LC-A6TDSH103TA120LDDSH103TA120LD-A8TDSH103TA240LD-8TDSH103TD012LD-6BDSH103TD012LP-6TDSH103TD024LDDSH103TD024LWDRDSH103TVDSH103TVA120LD-4PDSH103TVA120LD-6PDSH103TVD024LDDSH103TVD024LD-8TDSH103VDSH103VD024LDDSH103VD024LWDDSH104BDSH104BA120C-6PDSH104BA120C-8PDSH104BA120LC-A8PDSH104BA120LC-6PDSH104BA120LC-8PDSH104BA120LDDSH104BA120LD-A6TDSH104BA120LD-4PDSH104BD012LDDSH104BD024LDDSH104BD024LD-A6TDSH104BD024LD-6BDSH104BD024LD-6TDSH104BD024LJDSH104BTDSH104BTA120LDDSH104BTA120LD-A6PDSH104BTA240LD-8PDSH104BTA240LD-8TDSH104BTD024LDDSH104BTVDSH104BVDSH104BVA120LC-4PDSH104BVA120LD-4PDSH104BVA120LD-6PDSH104B2DSH104B2TDSH104B3DSH104E1DSH104E1D012LP-8TDSH104E1D024LDDSH104E1TDSH104E1VDSH104E15DSH104E15TDSH104E4DSH104E4D024LDDSH104E4TDSH104MDSH104MD024LDDSH104MTDSH104MTD024LDDSH104MVDSH104NDSH104ND012LD-6BDSH104NTDSH104NVDSH106C6DSH106C6A120LDDSH106C6A240LDDSH106C6D024LDDSH106C6EDSH106C6MDSH106C6MA120LDDSH106C6MA120LD-A6TDSH106C6MD024LDDSH106C6MD024LD-6BDSH106C6TDSH106C6TA120LC-8PDSH106C6TVDSH106C6VDSH121CDSH121CA120LD-A12TDSH121CA120LD-12TDSH121CD012LP-12TDSH121CD024LDDSH121CD024LWD-12PDSH121CHDSH121CHRDSH121CHRTDSH121CHRTA120LC-8TDSH121CHRTVDSH121CHRTVA120LC-A12PDSH121CHRVDSH121CHRVA120LC-A12PDSH121CHRVA120LDDSH121CHRVD024LC-A8TDSH121CHTDSH121CHTVA120LC-A12PDSH121CRDSH121CRA120LCDSH121CRA120LC-12PDSH121CRA120LC-8PDSH121CRA120LDDSH121CRA120LD-A6PDSH121CRA120LD-12TDSH121CRA120LD-6PDSH121CRD012LDDSH121CRD012LMRDSH121CRD012LP-12TDSH121CRD012LWDSH121CRD012LWPDSH121CRD024LDDSH121CRD024LD-A8PDSH121CRD024LD-12BDSH121CRD024LP-12TDSH121CRD024LPR-12TDSH121CRD024LWDSH121CRTDSH121CRTA120LDDSH121CRTA120LD-12PDSH121CRTA240LDDSH121CRTD012LD-12PDSH121CRTD024LDDSH121CRTD024LWDSH121CRTVDSH121CRTVA120LC-A8TDSH121CRTVA120LC-12PDSH121CRVDSH121CTDSH121CTA120LCDSH121CTA120LD-8TDSH121CTA240LC-12PDSH121CTD012LP-12TDSH121CTD024LD-A8TDSH121CTVDSH121CTVA120LCDSH121NDSH121NA120LC-12PDSH121NA120LDDSH121NEDSH121NEA120LDDSH121NED012LDDSH121NMDSH121NMA120LDDSH121NMD024LDDSH121NRDSH121NRA120LC-12PDSH121NRA120LC-8TDSH121NRA120LDDSH121NRA120LD-12TDSH121NRD012LWPDSH121NRD024LDDSH121NRD024LD-A12TDSH121NRD024LD-8PDSH121NRD024LWDSH121NRD024LW-8BDSH121NRD024LWD-12TDSH121NREDSH121NREA120LC-12TDSH121NREA120LDDSH121NREA120LD-8TDSH121NREVD024LD-A12TDSH121NRMDSH121NRMA120LC-12TDSH121NRMA120LDDSH121NRMA120LD-12TDSH121NRMA120LD-8TDSH121NRMD012LP-12TDSH121NRTDSH121NRTA120LDDSH121NRTA120LD-12PDSH121NRTD024LDDSH121NRTVDSH121NRVDSH121NTDSH121NVDSH164HDSL-2166DSL-2166-0DSL08D6CDSL08D6CA120LCDSL08D6CA120LC-A6PDSL08D6CA120LDDSL08D6CA120LD-6PDSL08D6CD012LW-4TDSL08D6CD024LDDSL08D6CD024LDRDSL08D6CTD012LPDSL080DCDSL080DCA120LCDSL080DCA120LC-4TDSL080DCA120LC-6PDSL080DCA120LC-6TDSL080DCA120LDDSL080DCA120LD-A4PDSL080DCA120LD-4TDSL080DCA240LDDSL080DCD012LW-A6TDSL080DCD024LDDSL080DCD024LD-A6BDSL080DCD024LD-

美國(guó)派克PARKER液壓閥[PARKER換向閥]，PARKER電磁換向閥