NORGREN氣缸型號(hào)市場(chǎng)需求量沒(méi)達(dá)到足以引以他們的興趣。實(shí)際上我們的油庫(kù)采用國(guó)內(nèi)生產(chǎn)的大流量的雙聯(lián)組合閥，效果會(huì)好得多。雙聯(lián)組合閥還常用來(lái)控制溫度、壓力、液位等參數(shù)。大閥保證基礎(chǔ)量，小閥提供補(bǔ)償量。在參數(shù)相對(duì)穩(wěn)定的系統(tǒng)中，這種位式控制能達(dá)相當(dāng)高精度。好些參數(shù)變化較大的系統(tǒng)，變化的速率仍受一定制約，例如溫度控制系統(tǒng)，仍受熱慣性的影響。所以運(yùn)用得當(dāng)?shù)碾p聯(lián)組合閥在滿足控制要求的前提下相對(duì)于調(diào)節(jié)閥能大幅降低成本。

     NORGREN氣缸型號(hào)平時(shí)不通電，處于微啟狀態(tài)，閥門提供初始流量；給一種電信號(hào)，電磁閥全開，提供大流量；給另種電信號(hào)，閥門關(guān)閥。閥門還帶有手動(dòng)裝置， 使得長(zhǎng)期關(guān)閥時(shí)也不需耗電。三位電磁閥可視為一種結(jié)構(gòu)更為緊湊的雙聯(lián)電磁閥，它很方便地實(shí)現(xiàn)三位調(diào)節(jié)，得到了很多應(yīng)用。進(jìn)一步的思路是n個(gè)大小成一定比例的電磁閥組成2n種流量,類似于數(shù)字電路稱這種組合閥為數(shù)字閥。

http://www.norgren.com/cn/info/27/%E6%95%B0%E6%8D%AE%E8%A1%A8
Norgren諾冠氣缸PRA/182080/M/40         PRA/182080/M/295              PRA/182080/M/340
Norgren諾冠氣缸PRA/182080/M/70         PRA/182080/M/130              PRA/182080/M/710
Norgren諾冠氣缸PRA/182080/X2/500      PRA/182080/M/700              PRA/182080/M/36
Norgren諾冠氣缸TPRA/182080/M/75              PRA/182080/M/145             PRA/182080/M/320/D
Norgren諾冠氣缸PRA/182080/200/UR/UF                            PRA/182080/300/UR/UF
Norgren諾冠氣缸PRA/182080/M/170/D2/F                    PRA/182080/M/200//D2/F
Norgren諾冠氣缸PRA/182080/M/125/D2/F                    PRA/182080/M/1600
Norgren諾冠氣缸PRA/182080/M/1000/F          PRA/182080/M/320       PRA/182080/125/D/F
Norgren諾冠氣缸PRA/182080/M/1000/M/C     PRA/182080/200           PRA/182080/125
Norgren諾冠氣缸PRA/182080/MU/1000/300                  PRA/182080/MU/1000/130
Norgren諾冠氣缸PRA/182080/MU/1000/330                  PRA/182080/TM/80&20
Norgren諾冠氣缸PRA/182080/M/170/D/F                      PRA/182080/M/200/D/F
Norgren諾冠氣缸PRA/182080/M/125/D/F        PRA/182080/N1/50       PRA/182080/M/405
Norgren諾冠氣缸PRA/182080/MU/1000/80      PRA/182080/270           PRA/182080/M/300
Norgren諾冠氣缸PRA/182080/M/180                     PRA/182080/420                 PRA/182080/400
Norgren諾冠氣缸PRA/182080/M/1450             PRA/182080/M/250       PRA/182080/M/75

PRA/182063/MT/200/200      PRA/182063/X2/80       TPRA/182063/M/125
Norgren諾冠氣缸PRA/182063/M/1800      PRA/182063/M/1280/C         PRA/182063/N2/160
Norgren諾冠氣缸PRA/182080/M/400              PRA/182080/M/160             PRA/182080/M/350
Norgren諾冠氣缸PRA/182080/M/200              TPRA/182080/M/100           TPRA/182080/M/125
Norgren諾冠氣缸PRA/182080/M/950              PRA/182080/M/100             PRA/182080/M/165
Norgren諾冠氣缸PRA/182080/850           PRA/182080/200/D/UF         PRA/182080/100
Norgren諾冠氣缸PRA/182080/125/D/UF         PRA/182080/250           PRA/182080/500
Norgren諾冠氣缸PRA/182080/M/80         PRA/182080/X2/320            PRA/182080/X2/460
Norgren諾冠氣缸TPRA/182080/M/75/G           PRA/182080/M/1000     PRA/182080/JM/210
Norgren諾冠氣缸PRA/182080/M/220              PRA/182080/M/800              PRA/182080/M/50
Norgren諾冠氣缸PRA/182080/J/75           PRA/182080/M/260              PRA/182080/50
Norgren諾冠氣缸PRA/182080/L4/1450            PRA/182080/M/125              PRA/182080/450
Norgren諾冠氣缸PRA/182080/800           PRA/182080/MU/800/160     PRA/182080/M/450

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