詢價(jià)電話：0713-6542758，18934630908 ? ?

詢價(jià)傳真：0713-6542758

詢價(jià)QQ: 736567721,704552157

R900925687 4WRAE10W1-30-22/G24N9K31/F1V

0811402141 DBETBEX-1X/315G24K31F1M

D634-371C?R24K02MONSS2 ? ? 真空閥門的傳動(dòng)動(dòng)力主要有手動(dòng)、磁動(dòng)、氣動(dòng)、電動(dòng)和液動(dòng)。選擇閥門動(dòng)力主要考慮①操作方便;②工作可靠S10A5.0/ R900446476

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S15A5.0/ R900446477

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S30A3.0/ R900420504

S30A5.0/ R900446709。例如手動(dòng)適合于小型的，自動(dòng)化程度要求不高的和試驗(yàn)用的設(shè)備上應(yīng)用的閥門;而大型工業(yè)生產(chǎn)用的自動(dòng)化程度高的設(shè)備上的閥門，則必須用磁動(dòng)、氣動(dòng)、電動(dòng)或液壓的。一般說來4WEH16E7X/6EG24N9ETK4

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4WEH10J3X/EG24NZ5L，磁動(dòng)閥門口徑都較小，動(dòng)作較快，電磁電源也較方便;而氣動(dòng)閥門突出的特點(diǎn)是動(dòng)作快;兩者都適合于作保護(hù)性的閥門。電動(dòng)(即電動(dòng)機(jī)傳動(dòng)的)和液壓的閥門，都是需要大動(dòng)力的閥門，尤其是液壓傳動(dòng)的閥門，動(dòng)力小了不合適，它不象電動(dòng)的閥門，常常因?yàn)殡娫捶奖愣徊捎谩?shí)際上，不管采用哪種動(dòng)力，都必須保證閥門工作可靠。

? ?(6)閥門開關(guān)的限位和指示H-4WEH16J7X/6EG24N9ETK4

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? ?為了使閥門開關(guān)準(zhǔn)確可靠和操作方便，閥門的開啟和關(guān)閉需要有限位和指示。特別是金屬墊密封的閥門更須嚴(yán)格控制閥座刀口對金屬墊的楔入量DPZO-A-171-L5 10?

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DPZO-A-251-L5 30?

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DPZO-A-271-S5/D ，在保證密封性能的前提下，楔入量愈少，墊圈受壓處冷硬現(xiàn)象愈輕，閥門使用壽命愈長。對于機(jī)動(dòng)閥門，限位有保護(hù)設(shè)備免遭機(jī)械損傷的重要作用。SDHI-0614-X 12DC 23

SDHI-0631/2/A-00 23

SDHI-0631/2/A-X ,　

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SDHI-0631/2/A-X 230/50/60AC 23

SDHI-0631/2/A-X 230AC/WP+SP-666

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DHI-0614-X 24DC,

DHI-0614-X230AC

? ?電動(dòng)真空閥門中所用的開關(guān)限位和指示裝置。螺桿5被固定在閥板的傳動(dòng)軸上，指針8固定在螺母6上，指針8和螺母6只能沿著刻度尺滑動(dòng)，當(dāng)螺桿5隨閥板傳動(dòng)軸轉(zhuǎn)動(dòng)時(shí)，它們即是指針又是限位開關(guān)的動(dòng)觸點(diǎn)。l是行程開關(guān);4是刻度尺。當(dāng)然這只是限位和指示裝置中的一種。R900773116 HM 17-1X/050-H/V0/0

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