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REXROTH比例流量閥利用液體受熱膨脹及液體不可壓縮的原理實(shí)現(xiàn)自動(dòng)調(diào)節(jié)。溫度傳感器內(nèi)的液體膨脹是均勻的，其控制作用為比例調(diào)節(jié)。被控介質(zhì)溫度變化時(shí)，傳感器內(nèi)的感溫液體體積隨著膨脹或收縮。被控介質(zhì)溫度高于設(shè)定值時(shí)，感溫液體膨脹，推動(dòng)閥芯向下關(guān)閉閥門，減少熱媒的流量；被控介質(zhì)的溫度低于設(shè)定值時(shí)，感溫液體收縮，復(fù)位彈簧推動(dòng)閥芯開啟，增加熱媒的流量。
REXROTH比例閥是一個(gè)依靠自身介質(zhì)的壓差為動(dòng)力，自動(dòng)控制流量的元器件，具有能夠衡定流量的功能，可用來(lái)*解決水力失調(diào)問題。自力式流量控制閥安裝簡(jiǎn)單，調(diào)節(jié)方便；使用中節(jié)能成效明顯，節(jié)電25—30%，節(jié)煤15—20%，增加供熱面積25—30%。有利于穩(wěn)定運(yùn)行，提高供暖質(zhì)量。在混水系統(tǒng)改造中，經(jīng)過水力計(jì)算，根據(jù)供暖面積、循環(huán)流量以及供熱管徑等因素選擇安裝了相應(yīng)的流量控制閥，根據(jù)溫度調(diào)節(jié)流量，利用自力式流量控制閥的*功能穩(wěn)定了混水的壓力、流量和溫度，保證了各個(gè)混水站之間的流量平衡與調(diào)節(jié)，實(shí)現(xiàn)了平衡運(yùn)行。
力士樂比例閥采用金屬密封的閥門一般比彈性密封的閥門壽命長(zhǎng)，但很難做到*密封。金屬密封能適應(yīng)較高的工作溫度，彈性密封則具有受溫度限制的缺陷。 如果要求蝶閥作為流量控制使用，主要的是正確選擇閥門的尺寸和類型。蝶閥的結(jié)構(gòu)原理尤其適合制作大口徑閥門。蝶閥不僅在石油、煤氣、化工、水處理等一般工業(yè)上得到廣泛應(yīng)用，而且還應(yīng)用于熱電站的冷卻水系統(tǒng)。常用的蝶閥有對(duì)夾式蝶閥和法蘭式蝶閥兩種。
REXROTH比例閥R901000846
上海維特銳現(xiàn)貨表:
4WE6E6X/SG24N9K4/V 電磁閥
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SL10PA14X/V 電磁閥
ZDR10DP25X/150YM 壓力閥
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R900021267(Z31) 七芯插頭
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0510112014 柱塞泵
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4WE6J6X/EW230N9K4 （R900908589） 電磁閥
R900410808 ZDR6DA2-4X/25Y 電磁閥
M3SEW6U3X/420MG24N9K4 R900566283 電磁閥
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Z1S10T13X/V 電磁閥
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DBDS6P1X/315 溢流閥
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R900421222 SCA16CZ2X/M 壓力補(bǔ)償器
DBEM107X/100YG24K4M R901335402 比例閥
ZDB10VB1-4X/50V R900967522 溢流閥
ZDB10VB1-4X/200V R900595254 溢流閥
上海維特銳丁劍宇歡迎您的詢價(jià)！
ZDB10VA2-4X-100V R900424537 溢流閥
Z2DB10VD2-4X/200V R900411358 液壓閥
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R900954107 4WRE10W75-2X/G24K4/V 比例方向閥
R900082899 插頭
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M-SR25KE05-1X 電磁閥
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HE0524806 液壓元件
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DGMFN7YA2HB2H20 液壓閥
換向閥：
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電磁溢流閥：
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電液換向閥：
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