化工儀器網(wǎng)技術(shù)文章
MAC現(xiàn)貨 美國MAC電磁閥的使用方法
閱讀：2009 發(fā)布時間：2018-9-7 美國MAC電磁閥的蝶板安裝于管道的直徑方向。在美國MAC電磁閥閥體圓柱形通道內(nèi)，圓盤形蝶板繞著軸線旋轉(zhuǎn)，旋轉(zhuǎn)角度為0°-90°之間，旋轉(zhuǎn)到90°時，閥門則處于全開狀態(tài)。
美國MAC電磁閥結(jié)構(gòu)簡單、體積小、重量輕，只由少數(shù)幾個零件組成。而且只需旋轉(zhuǎn)90°即可快速啟閉，操作簡單，同時該閥門具有良好的流體控制特性。蝶閥處于*開啟位置時，蝶板厚度是介質(zhì)流經(jīng)閥體時的阻力，因此通過該閥門所產(chǎn)生的壓力降很小，故具有較好的流量控制特性。
美國MAC電磁閥有彈密封和金屬的密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。
采用金屬密封的閥門一般比彈性密封的閥門壽命長，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)。
常用的美國MAC電磁閥是用雙頭螺栓將閥門連接在兩管道法蘭之間，法蘭式蝶閥是閥門上帶有法蘭，用螺栓將閥門上兩端法蘭連接在管道法蘭上。
其手柄、手輪的大小是按正常人為設(shè)計的。因此，在閥門使用上規(guī)定：不答應(yīng)操作者借助杠桿和長扳手啟、閉閥門。同時手柄長度、手輪直徑小于320mm的，只答應(yīng)一個人操作；直徑等于或超過320mm的手輪，答應(yīng)兩人共同操作，或者答應(yīng)一人借助適當?shù)母軛U（一般長度不超過0.5m）操作。但隔膜閥、非金屬閥門是嚴禁使用杠桿或長扳手操作的，也不答應(yīng)用過大、過猛的力關(guān)閉閥門。
有的操作者習慣使用杠桿和長扳手操作手動閥門，認為關(guān)閉力越大越好，其實不然。這樣會造成閥門過早損壞，甚至釀成事故。實踐證實：除撞擊式手輪外，過大過猛地操作閥門輕易損壞手輪、手柄，擦傷閥桿和密封面，甚至壓壞密封面。其次，手輪、手柄損壞或丟失后，應(yīng)及時配齊，不答應(yīng)用活扳手代用。
美國MAC電磁閥之類的閥門，關(guān)閉或開啟到頭（即下死點或上死點）時要回轉(zhuǎn)1/4——1/2圈，使螺紋更好密合，以有利操作時檢查，以免擰得過緊損壞閥門。
較大口徑的美國MAC電磁閥和截止閥，有的設(shè)有旁通閥。旁通閥的作用是平衡進出口壓差，減少開啟力矩。開啟時，應(yīng)先打開旁通閥，然后再開啟大閥門。
開啟蒸汽閥門前必須先將管道預熱，排出凝聚水。開啟時要緩慢，以免產(chǎn)生水錘現(xiàn)象，損壞閥門和設(shè)備。開閉球閥、蝶閥、旋塞閥時，當閥桿頂面的溝槽與通道平行時，表明閥門的全開啟位置；當閥桿向左或向右旋90度時，溝槽與通道垂直時，表明閥門在全關(guān)閉位置。有美國MAC電磁閥以扳手與通道平行為開啟，垂直為關(guān)閉。三通、四通閥門的操作應(yīng)按開啟、關(guān)閉、換向的標記進行，操作完畢后應(yīng)取下活動手柄。
對有標心的美國MAC電磁閥應(yīng)檢查調(diào)整好全開或全閉的指示位置。明桿閘閥、截止閥也應(yīng)雇它們?nèi)_和全閉的位置，這樣可以避免全開時頂死點。閥門全閉時，可借助標尺和記號發(fā)現(xiàn)關(guān)閉件脫落或頂住異物，以便排除故障。
新安裝的管道和設(shè)備，內(nèi)面臟物、焊碴等物較多。常開手動閥門密封面上輕易粘有臟物，應(yīng)用微開方法，讓高速介質(zhì)沖走這些異物，再輕輕關(guān)閉。有的手動閥門在關(guān)閉后，溫度下降，閥件收縮，使密封面產(chǎn)生細小縫隙，出現(xiàn)泄漏。這樣應(yīng)在關(guān)閉后，在適當時間再關(guān)一次。閥門操作正確與否，直接影響閥門的使用壽命。
MAC電磁閥型號：
MAC電磁閥3-ACA-DDAA-1BA,
MAC電磁閥3-ACA-DABA-1BA
MAC電磁閥3-ACA-DDBA-1BA,
MAC電磁閥3-ACA-DDFA-1BA
MAC電磁閥3-AA1-DDFJ-1JM,
MAC電磁閥3-ACA-DDFJ-1KA
MAC電磁閥3-SAC-DACA-1BA,
MAC電磁閥3-AAA-DACA-1BA
MAC電磁閥3-ACA-DDAJ-1JB,
MAC電磁閥3-SCC-DDAA-1BA
MAC電磁閥3-AAA-DDCA-1BK,
MAC電磁閥3-AAA-DAAA-1CA
MAC電磁閥3-AAA-DAAA-1BA,
MAC電磁閥3-B00-DABJ-1FM,
MAC電磁閥3-SAC-DAAA-1BA,
MAC電磁閥3-SCC-DABA-1BA
MAC電磁閥3-AAA-DACA-2BA,
MAC電磁閥3-AAA-DDCC-1BK,
MAC電磁閥3-AA1-DDFJ-1JB,
MAC電磁閥3-ACA-DBFA-1BA
MAC電磁閥3-ACA-DBAA-EBA,
MAC電磁閥3-ACA-DCAA-1BA,
MAC電磁閥3-ACA-DEFJ-1JJ,
MAC電磁閥3-AAA-DFFA-1BA
MAC電磁閥3-SLL-0GAA-EDA,
MAC電磁閥3-AAA-DDAJ-1JD,
MAC電磁閥3-AAA-DDAJ-1KD,
MAC電磁閥3-ACA-DDAA-1AB
MAC電磁閥3-AAB-DDAA-1BA,
MAC電磁閥3-AAA-DDAJ-1JD,
MAC電磁閥3-AAA-DABA-1BA,
MAC電磁閥3-AAA-DAAA-1BA,
MAC電磁閥3-BAA-DAAA-1BA,
MAC電磁閥3-BCB-DABB-2KA,
MAC電磁閥3-EDC-DACC-3KD,
MAC電磁閥3-SED-DFBH-4JB,
MAC電磁閥3-TOE-DDAJ-1JD,
MAC電磁閥3-AAF-DDBA-2BA,
MAC電磁閥3-BCO-DDFB-3KA,
MAC電磁閥3-EDA-DAAC-4KD,
MAC電磁閥3-SEB-DABH-1JB,
MAC電磁閥3-TOC-DACJ-2JD,
MAC電磁閥3-AAD-DFBA-2BA,
MAC電磁閥3-BCE-DDAB-3KA,
MAC電磁閥3-EDF-DDBC-4KD,
MAC電磁閥3-SEO-DDFH-1JB,
MAC電磁閥3-TOA-DAAJ-2JD,
MAC電磁閥3-AAB-DABA-3BA,
MAC電磁閥3-BCC-DACB-4KA,
MAC電磁閥3-EDD-DFBC-1KD,
MAC電磁閥3-SEE-DDAH-2JB,
MAC電磁閥3-TOF-DDBJ-3JD,
MAC電磁閥3-B00-DDBB-1BK,
MAC電磁閥3-B00-DDEJ-1TJ,
MAC電磁閥3-SAC-DDAA-1BA,
MAC電磁閥3-SCC-DAAA-1BA,
MAC電磁閥3-SCC-DDAJ-1KA ,
MAC電磁閥4-BC1-DDAA-1BA,
MAC電磁閥4-AA1-DDFA-1BA
MAC電磁閥4-AC1-DDAA-1BA,
MAC電磁閥4-AA1-DDAA-1CM
MAC電磁閥4-BC1-DABA-1BA,
MAC電磁閥4-SA2-DACA-1BA
MAC電磁閥4-SC1-DDAA-1BA,
MAC電磁閥4-AA1-DDFJ-1JB,
MAC電磁閥4-AC1-DDNA-1BA,
MAC電磁閥4-AC1-DDNA-THA,
MAC電磁閥4-AC1-DDNA-1BA,
MAC電磁閥4-SE2-DABA-1BA,
MAC電磁閥4-AA1-DDAJ-1KJ,
MAC電磁閥4-AA1-DDAJ-0KA,
MAC電磁閥4-AA1-DDAJ-0KA,
MAC電磁閥4-AA1-DDAJ-1KJ,
MAC電磁閥4-AC1-DACA-1BA,
MAC電磁閥4-SA1-DACC-1BA,
MAC電磁閥4-FA2-DABA-2CM,
MAC電磁閥4-AA1-DDFA-1DA,
MAC電磁閥4-AA1-DDAJ-1KD,
MAC電磁閥4-BC1-DDFJ-1KD,
MAC電磁閥4-BC1-DAAJ-1KA,
MAC電磁閥4-SC2-DAAJ-1KF,
MAC電磁閥4-GC1-DDAA-1BA,
MAC電磁閥4-AA1-DACC-1BA,
MAC電磁閥4-BC1-DEFJ-1JM,
MAC電磁閥4-SC1-DABA-1BA
MAC電磁閥4-SC2-DDFJ-4KD,
MAC電磁閥4-SC2-DDVD-1BA,
MAC電磁閥4-EA1-DDAA-1BA,
MAC電磁閥4-SA1-DACA-1BA
MAC電磁閥4-AA1-DDFA-1DA,
MAC電磁閥4-AA1-DDBA-1BA,
MAC電磁閥4-BC1-DDFA-1BA-CLSF,
MAC電磁閥4-AA1-DDAA-1BA,
MAC電磁閥4-SA1-DAAA-1BA,
MAC電磁閥4-FA1-DACA-1BA,
MAC電磁閥4-LAA-DFFJ-3KD,
MAC電磁閥4-AA1-DDFA-1JB,
MAC電磁閥4-AA1-BDFJ-1JB,
MAC電磁閥4-BC1-DEFJ-1BA,
MAC電磁閥4-BC1-EDFJ-1JM,
MAC電磁閥4-GC1-DAAA-1BA,
MAC電磁閥4-GC1-DAAJ-1KA,
MAC電磁閥4-GC1-DABC-1BA,
MAC電磁閥4-SA1-DACA-1BA,
MAC電磁閥34B-AAB-GDNB-1BE,
MAC電磁閥34B-ABA-GDFA-1KA
MAC電磁閥34B-AAA-GDKA-3BA,
MAC電磁閥34B-ABB-GDFA-1BA,
MAC電磁閥34B-AAA-GDDO-1KJ9,
MAC電磁閥34B-ABA-GDFA-1BA,
MAC電磁閥34B-ABA-GDFA-1BA,
MAC電磁閥34B-AAA-GDFA-1KV,
MAC電磁閥34B-AAA-GDFA-1BA,
MAC電磁閥34B-AAA-GDFA-1KV,
MAC電磁閥34B-NOO-GDNC-1KT 2,
MAC電磁閥34C-AAA-GAAA-1KA,
MAC電磁閥34C-BBB-GHCB-1KT,
MAC電磁閥34C-LOO-GDCC-1BA,
MAC電磁閥34B-LOO-GDFA-1BA,
MAC電磁閥34C-NAA-GDDH-1BT,
MAC電磁閥34C-LOO-GDFA-1KU,
MAC電磁閥34C-AAA-GDFA-2KA,
MAC電磁閥34C-BBB-GDNB-2KT
MAC電磁閥34C-LOO-GAAC-2BA,
MAC電磁閥34C-NAA-GHCB-2BT,
MAC電磁閥34C-AAA-GDCC-2HB
MAC電磁閥225B-501BA,
MAC電磁閥225B-611BA,
MAC電磁閥225B-121CAAA
MAC電磁閥225B-121BA,
MAC電磁閥225B-761JJ,
MAC電磁閥225B-121BA
MAC電磁閥225B-121CA,
MAC電磁閥225B-111CAAA,
MAC電磁閥225B-121AA
MAC電磁閥225B-781NAAA,
MAC電磁閥225B-121JA,
MAC電磁閥225B-510JC,
MAC電磁閥225B-611C
MAC電磁閥225B-110JB,
MAC電磁閥225B-120JB,
MAC電磁閥225B-220JB,
MAC電磁閥225B-590JB,
MAC電磁閥225B-610JB,
MAC電磁閥225B-870JB,
MAC電磁閥225B-111JB,
MAC電磁閥225B-122JB,
MAC電磁閥225B-221JB,
MAC電磁閥225B-592JB,
MAC電磁閥225B-611JB,
MAC電磁閥225B-872JB,
MAC電磁閥225B-110JD,
MAC電磁閥225B-120JA,
MAC電磁閥225B-220JC,
MAC電磁閥225B-590BA,
MAC電磁閥225B-610EA,
MAC電磁閥225B-870JD,
MAC電磁閥225B-111JA,
MAC電磁閥225B-122JC,
MAC電磁閥225B-221BA,
MAC電磁閥225B-592EA,
MAC電磁閥225B-611JD,
MAC電磁閥225B-872JA,
MAC電磁閥265B-110JB,
MAC電磁閥275B-120JB,
MAC電磁閥285B-220JB,
MAC電磁閥265B-590JB,
MAC電磁閥275B-610JB,
MAC電磁閥285B-870JB,
MAC電磁閥265B-111JB,
MAC電磁閥275B-122JB,
MAC電磁閥285B-221JB,
MAC電磁閥265B-592JB,
MAC電磁閥275B-611JB,
MAC電磁閥285B-872JB,
MAC電磁閥265B-110JD,
MAC電磁閥275B-120JA,
MAC電磁閥285B-220JC,
MAC電磁閥265B-590BA,
MAC電磁閥275B-610EA,
MAC電磁閥285B-870JD,
MAC電磁閥265B-111JA,
MAC電磁閥275B-122JC,
MAC電磁閥285B-221BA,
MAC電磁閥265B-592EA,
MAC電磁閥275B-611JD,
MAC電磁閥285B-872JA,
MAC電磁閥220B-110JB,
MAC電磁閥224B-120JB,
MAC電磁閥226B-220JB,
MAC電磁閥227B-590JB,
MAC電磁閥228B-610JB,
MAC電磁閥229B-870JB,
MAC電磁閥220B-111JB,
MAC電磁閥224B-122JB,
MAC電磁閥226B-221JB,
MAC電磁閥227B-592JB,
MAC電磁閥228B-611JB,
MAC電磁閥229B-872JB,
MAC電磁閥224B-110JD,
MAC電磁閥226B-120JA,
MAC電磁閥227B-220JC,
MAC電磁閥228B-590BA,
MAC電磁閥229B-610EA,
MAC電磁閥224B-870JD,
MAC電磁閥226B-111JA,
MAC電磁閥227B-122JC,
MAC電磁閥228B-221BA,
MAC電磁閥229B-592EA,
MAC電磁閥220B-611JD,
MAC電磁閥224B-872JA,
MAC電磁閥250B-111CAAA,
MAC電磁閥250B-111JA,
MAC電磁閥250B-501JA,
MAC電磁閥250B-611CAAA,
MAC電磁閥256B-110JB,
MAC電磁閥257B-120JB,
MAC電磁閥258B-220JB,
MAC電磁閥259B-590JB,
MAC電磁閥250B-610JB,
MAC電磁閥254B-870JB,
MAC電磁閥256B-111JB,
MAC電磁閥257B-122JB,
MAC電磁閥258B-221JB,
MAC電磁閥259B-592JB,
MAC電磁閥256B-611JB,
MAC電磁閥257B-872JB,
MAC電磁閥258B-110JD,
MAC電磁閥259B-120JA,
MAC電磁閥250B-220JC,
MAC電磁閥254B-590BA,
MAC電磁閥256B-610EA,
MAC電磁閥257B-870JD,
MAC電磁閥258B-111JA,
MAC電磁閥259B-122JC,
MAC電磁閥250B-221BA,
MAC電磁閥254B-592EA,
MAC電磁閥256B-611JD,
MAC電磁閥257B-872JA,
MAC電磁閥268B-110JB,
MAC電磁閥279B-120JB,
MAC電磁閥286B-220JB,
MAC電磁閥267B-590JB,
MAC電磁閥278B-610JB,
MAC電磁閥289B-870JB,
MAC電磁閥269B-111JB,
MAC電磁閥278B-122JB,
MAC電磁閥287B-221JB,
MAC電磁閥264B-592JB,
MAC電磁閥270B-611JB,
MAC電磁閥280B-872JB,
MAC電磁閥264B-110JD,
MAC電磁閥276B-120JA,
MAC電磁閥287B-220JC,
MAC電磁閥268B-590BA,
MAC電磁閥279B-610EA,
MAC電磁閥280B-870JD,
MAC電磁閥264B-111JA,
MAC電磁閥276B-122JC,
MAC電磁閥287B-221BA,
MAC電磁閥268B-592EA,
MAC電磁閥279B-611JD,
MAC電磁閥280B-872JA,
MAC電磁閥161B-501JB,
MAC電磁閥130B-111JA,
MAC電磁閥161B-501JB
MAC電磁閥117B-501BAAA,
MAC電磁閥117B-111BAAA,
MAC電磁閥111B-871JB,
MAC電磁閥111B-291JA
MAC電磁閥166B-611BA,
MAC電磁閥166B-611JM,
MAC電磁閥130B-612JA,
MAC電磁閥116B-591B-AAA,
MAC電磁閥116B-611JB,
MAC電磁閥111B-503JD,
MAC電磁閥111B-611JB ,
MAC電磁閥111B-611JB,
MAC電磁閥111B-511JM,
MAC電磁閥111B-121CAAA,
MAC電磁閥111B-511JB,
MAC電磁閥111B-511JA,
MAC電磁閥111B-611JM,
MAC電磁閥11B-6115M,
MAC電磁閥111B-G115M,
MAC電磁閥111B-221JB,
MAC電磁閥111B-111AA,
MAC電磁閥116B-501BAAA,
MAC電磁閥116B-121JB,
MAC電磁閥116B-611JM,
MAC電磁閥116B-611BA,
MAC電磁閥117B-871JB,
MAC電磁閥117B-121JD,
MAC電磁閥117B-121DAAA,
MAC電磁閥117B-291VAA,
MAC電磁閥121B-111BA,
MAC電磁閥121B-121BA,
MAC電磁閥121B-501BA,
MAC電磁閥121B-551BA,
MAC電磁閥121B-611BA,
MAC電磁閥121B-871BA,
MAC電磁閥121B-111JA,
MAC電磁閥121B-121JB,
MAC電磁閥121B-501JC,
MAC電磁閥121B-551JD,
MAC電磁閥121B-611JA,
MAC電磁閥121B-871JB,
MAC電磁閥111B-111BA,
MAC電磁閥131B-121BA,
MAC電磁閥141B-501BA,
MAC電磁閥161B-551BA,
MAC電磁閥171B-611BA,
MAC電磁閥181B-871BA,
MAC電磁閥122B-111JA,
MAC電磁閥120B-121JB,
MAC電磁閥122B-111BA,
MAC電磁閥123B-121BA,
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……
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