MAC现货 美国MAC电磁阀的使用方法
美国mac电磁阀的蝶板安装于管道的直径方向。在美国mac电磁阀阀体圆柱形通道内，圆盘形蝶板绕着轴线旋转，旋转角度为0°-90°之间，旋转到90°时，阀门则处于全开状态。
美国mac电磁阀结构简单、体积小、重量轻，只由少数几个零件组成。而且只需旋转90°即可快速启闭，操作简单，同时该阀门具有良好的流体控制特性。蝶阀处于*开启位置时，蝶板厚度是介质流经阀体时的阻力，因此通过该阀门所产生的压力降很小，故具有较好的流量控制特性。
美国mac电磁阀有弹密封和金属的密封两种密封型式。弹性密封阀门，密封圈可以镶嵌在阀体上或附在蝶板周边。
采用金属密封的阀门一般比弹性密封的阀门寿命长，但很难做到*密封。金属密封能适应较高的工作温度，弹性密封则具有受温度限制的缺陷。
如果要求蝶阀作为流量控制使用，主要的是正确选择阀门的尺寸和类型。蝶阀的结构原理尤其适合制作大口径阀门。蝶阀不仅在石油、煤气、化工、水处理等一般工业上得到广泛应用，而且还应用于热电站的冷却水系统。
常用的美国mac电磁阀是用双头螺栓将阀门连接在两管道法兰之间，法兰式蝶阀是阀门上带有法兰，用螺栓将阀门上两端法兰连接在管道法兰上。
其手柄、手轮的大小是按正常人为设计的。因此，在阀门使用上规定：不答应操作者借助杠杆和长扳手启、闭阀门。同时手柄长度、手轮直径小于320mm的，只答应一个人操作；直径等于或超过320mm的手轮，答应两人共同操作，或者答应一人借助适当的杠杆（一般长度不超过0.5m）操作。但隔膜阀、非金属阀门是严禁使用杠杆或长扳手操作的，也不答应用过大、过猛的力关闭阀门。
有的操作者习惯使用杠杆和长扳手操作手动阀门，认为关闭力越大越好，其实不然。这样会造成阀门过早损坏，甚至酿成事故。实践证实：除撞击式手轮外，过大过猛地操作阀门轻易损坏手轮、手柄，擦伤阀杆和密封面，甚至压坏密封面。其次，手轮、手柄损坏或丢失后，应及时配齐，不答应用活扳手代用。
美国mac电磁阀之类的阀门，关闭或开启到头（即下死点或上死点）时要回转1/4——1/2圈，使螺纹更好密合，以有利操作时检查，以免拧得过紧损坏阀门。
较大口径的美国mac电磁阀和截止阀，有的设有旁通阀。旁通阀的作用是平衡进出口压差，减少开启力矩。开启时，应先打开旁通阀，然后再开启大阀门。
开启蒸汽阀门前必须先将管道预热，排出凝聚水。开启时要缓慢，以免产生水锤现象，损坏阀门和设备。开闭球阀、蝶阀、旋塞阀时，当阀杆顶面的沟槽与通道平行时，表明阀门的全开启位置；当阀杆向左或向右旋90度时，沟槽与通道垂直时，表明阀门在全关闭位置。有美国mac电磁阀以扳手与通道平行为开启，垂直为关闭。三通、四通阀门的操作应按开启、关闭、换向的标记进行，操作完毕后应取下活动手柄。
对有标心的美国mac电磁阀应检查调整好全开或全闭的指示位置。明杆闸阀、截止阀也应雇它们全开和全闭的位置，这样可以避免全开时顶死点。阀门全闭时，可借助标尺和记号发现关闭件脱落或顶住异物，以便排除故障。
新安装的管道和设备，内面脏物、焊碴等物较多。常开手动阀门密封面上轻易粘有脏物，应用微开方法，让高速介质冲走这些异物，再轻轻关闭。有的手动阀门在关闭后，温度下降，阀件收缩，使密封面产生细小缝隙，出现泄漏。这样应在关闭后，在适当时间再关一次。阀门操作正确与否，直接影响阀门的使用寿命。
mac电磁阀型号：
mac电磁阀3-aca-ddaa-1ba,
mac电磁阀3-aca-daba-1ba
mac电磁阀3-aca-ddba-1ba,
mac电磁阀3-aca-ddfa-1ba
mac电磁阀3-aa1-ddfj-1jm,
mac电磁阀3-aca-ddfj-1ka
mac电磁阀3-sac-daca-1ba,
mac电磁阀3-aaa-daca-1ba
mac电磁阀3-aca-ddaj-1jb,
mac电磁阀3-scc-ddaa-1ba
mac电磁阀3-aaa-ddca-1bk,
mac电磁阀3-aaa-daaa-1ca
mac电磁阀3-aaa-daaa-1ba,
mac电磁阀3-b00-dabj-1fm,
mac电磁阀3-sac-daaa-1ba,
mac电磁阀3-scc-daba-1ba
mac电磁阀3-aaa-daca-2ba,
mac电磁阀3-aaa-ddcc-1bk,
mac电磁阀3-aa1-ddfj-1jb,
mac电磁阀3-aca-dbfa-1ba
mac电磁阀3-aca-dbaa-eba,
mac电磁阀3-aca-dcaa-1ba,
mac电磁阀3-aca-defj-1jj,
mac电磁阀3-aaa-dffa-1ba
mac电磁阀3-sll-0gaa-eda,
mac电磁阀3-aaa-ddaj-1jd,
mac电磁阀3-aaa-ddaj-1kd,
mac电磁阀3-aca-ddaa-1ab
mac电磁阀3-aab-ddaa-1ba,
mac电磁阀3-aaa-ddaj-1jd,
mac电磁阀3-aaa-daba-1ba,
mac电磁阀3-aaa-daaa-1ba,
mac电磁阀3-baa-daaa-1ba,
mac电磁阀3-bcb-dabb-2ka,
mac电磁阀3-edc-dacc-3kd,
mac电磁阀3-sed-dfbh-4jb,
mac电磁阀3-toe-ddaj-1jd,
mac电磁阀3-aaf-ddba-2ba,
mac电磁阀3-bco-ddfb-3ka,
mac电磁阀3-eda-daac-4kd,
mac电磁阀3-seb-dabh-1jb,
mac电磁阀3-toc-dacj-2jd,
mac电磁阀3-aad-dfba-2ba,
mac电磁阀3-bce-ddab-3ka,
mac电磁阀3-edf-ddbc-4kd,
mac电磁阀3-seo-ddfh-1jb,
mac电磁阀3-toa-daaj-2jd,
mac电磁阀3-aab-daba-3ba,
mac电磁阀3-bcc-dacb-4ka,
mac电磁阀3-edd-dfbc-1kd,
mac电磁阀3-see-ddah-2jb,
mac电磁阀3-tof-ddbj-3jd,
mac电磁阀3-b00-ddbb-1bk,
mac电磁阀3-b00-ddej-1tj,
mac电磁阀3-sac-ddaa-1ba,
mac电磁阀3-scc-daaa-1ba,
mac电磁阀3-scc-ddaj-1ka ,
mac电磁阀4-bc1-ddaa-1ba,
mac电磁阀4-aa1-ddfa-1ba
mac电磁阀4-ac1-ddaa-1ba,
mac电磁阀4-aa1-ddaa-1cm
mac电磁阀4-bc1-daba-1ba,
mac电磁阀4-sa2-daca-1ba
mac电磁阀4-sc1-ddaa-1ba,
mac电磁阀4-aa1-ddfj-1jb,
mac电磁阀4-ac1-ddna-1ba,
mac电磁阀4-ac1-ddna-tha,
mac电磁阀4-ac1-ddna-1ba,
mac电磁阀4-se2-daba-1ba,
mac电磁阀4-aa1-ddaj-1kj,
mac电磁阀4-aa1-ddaj-0ka,
mac电磁阀4-aa1-ddaj-0ka,
mac电磁阀4-aa1-ddaj-1kj,
mac电磁阀4-ac1-daca-1ba,
mac电磁阀4-sa1-dacc-1ba,
mac电磁阀4-fa2-daba-2cm,
mac电磁阀4-aa1-ddfa-1da,
mac电磁阀4-aa1-ddaj-1kd,
mac电磁阀4-bc1-ddfj-1kd,
mac电磁阀4-bc1-daaj-1ka,
mac电磁阀4-sc2-daaj-1kf,
mac电磁阀4-gc1-ddaa-1ba,
mac电磁阀4-aa1-dacc-1ba,
mac电磁阀4-bc1-defj-1jm,
mac电磁阀4-sc1-daba-1ba
mac电磁阀4-sc2-ddfj-4kd,
mac电磁阀4-sc2-ddvd-1ba,
mac电磁阀4-ea1-ddaa-1ba,
mac电磁阀4-sa1-daca-1ba
mac电磁阀4-aa1-ddfa-1da,
mac电磁阀4-aa1-ddba-1ba,
mac电磁阀4-bc1-ddfa-1ba-clsf,
mac电磁阀4-aa1-ddaa-1ba,
mac电磁阀4-sa1-daaa-1ba,
mac电磁阀4-fa1-daca-1ba,
mac电磁阀4-laa-dffj-3kd,
mac电磁阀4-aa1-ddfa-1jb,
mac电磁阀4-aa1-bdfj-1jb,
mac电磁阀4-bc1-defj-1ba,
mac电磁阀4-bc1-edfj-1jm,
mac电磁阀4-gc1-daaa-1ba,
mac电磁阀4-gc1-daaj-1ka,
mac电磁阀4-gc1-dabc-1ba,
mac电磁阀4-sa1-daca-1ba,
mac电磁阀34b-aab-gdnb-1be,
mac电磁阀34b-aba-gdfa-1ka
mac电磁阀34b-aaa-gdka-3ba,
mac电磁阀34b-abb-gdfa-1ba,
mac电磁阀34b-aaa-gddo-1kj9,
mac电磁阀34b-aba-gdfa-1ba,
mac电磁阀34b-aba-gdfa-1ba,
mac电磁阀34b-aaa-gdfa-1kv,
mac电磁阀34b-aaa-gdfa-1ba,
mac电磁阀34b-aaa-gdfa-1kv,
mac电磁阀34b-noo-gdnc-1kt 2,
mac电磁阀34c-aaa-gaaa-1ka,
mac电磁阀34c-bbb-ghcb-1kt,
mac电磁阀34c-loo-gdcc-1ba,
mac电磁阀34b-loo-gdfa-1ba,
mac电磁阀34c-naa-gddh-1bt,
mac电磁阀34c-loo-gdfa-1ku,
mac电磁阀34c-aaa-gdfa-2ka,
mac电磁阀34c-bbb-gdnb-2kt
mac电磁阀34c-loo-gaac-2ba,
mac电磁阀34c-naa-ghcb-2bt,
mac电磁阀34c-aaa-gdcc-2hb
mac电磁阀225b-501ba,
mac电磁阀225b-611ba,
mac电磁阀225b-121caaa
mac电磁阀225b-121ba,
mac电磁阀225b-761jj,
mac电磁阀225b-121ba
mac电磁阀225b-121ca,
mac电磁阀225b-111caaa,
mac电磁阀225b-121aa
mac电磁阀225b-781naaa,
mac电磁阀225b-121ja,
mac电磁阀225b-510jc,
mac电磁阀225b-611c
mac电磁阀225b-110jb,
mac电磁阀225b-120jb,
mac电磁阀225b-220jb,
mac电磁阀225b-590jb,
mac电磁阀225b-610jb,
mac电磁阀225b-870jb,
mac电磁阀225b-111jb,
mac电磁阀225b-122jb,
mac电磁阀225b-221jb,
mac电磁阀225b-592jb,
mac电磁阀225b-611jb,
mac电磁阀225b-872jb,
mac电磁阀225b-110jd,
mac电磁阀225b-120ja,
mac电磁阀225b-220jc,
mac电磁阀225b-590ba,
mac电磁阀225b-610ea,
mac电磁阀225b-870jd,
mac电磁阀225b-111ja,
mac电磁阀225b-122jc,
mac电磁阀225b-221ba,
mac电磁阀225b-592ea,
mac电磁阀225b-611jd,
mac电磁阀225b-872ja,
mac电磁阀265b-110jb,
mac电磁阀275b-120jb,
mac电磁阀285b-220jb,
mac电磁阀265b-590jb,
mac电磁阀275b-610jb,
mac电磁阀285b-870jb,
mac电磁阀265b-111jb,
mac电磁阀275b-122jb,
mac电磁阀285b-221jb,
mac电磁阀265b-592jb,
mac电磁阀275b-611jb,
mac电磁阀285b-872jb,
mac电磁阀265b-110jd,
mac电磁阀275b-120ja,
mac电磁阀285b-220jc,
mac电磁阀265b-590ba,
mac电磁阀275b-610ea,
mac电磁阀285b-870jd,
mac电磁阀265b-111ja,
mac电磁阀275b-122jc,
mac电磁阀285b-221ba,
mac电磁阀265b-592ea,
mac电磁阀275b-611jd,
mac电磁阀285b-872ja,
mac电磁阀220b-110jb,
mac电磁阀224b-120jb,
mac电磁阀226b-220jb,
mac电磁阀227b-590jb,
mac电磁阀228b-610jb,
mac电磁阀229b-870jb,
mac电磁阀220b-111jb,
mac电磁阀224b-122jb,
mac电磁阀226b-221jb,
mac电磁阀227b-592jb,
mac电磁阀228b-611jb,
mac电磁阀229b-872jb,
mac电磁阀224b-110jd,
mac电磁阀226b-120ja,
mac电磁阀227b-220jc,
mac电磁阀228b-590ba,
mac电磁阀229b-610ea,
mac电磁阀224b-870jd,
mac电磁阀226b-111ja,
mac电磁阀227b-122jc,
mac电磁阀228b-221ba,
mac电磁阀229b-592ea,
mac电磁阀220b-611jd,
mac电磁阀224b-872ja,
mac电磁阀250b-111caaa,
mac电磁阀250b-111ja,
mac电磁阀250b-501ja,
mac电磁阀250b-611caaa,
mac电磁阀256b-110jb,
mac电磁阀257b-120jb,
mac电磁阀258b-220jb,
mac电磁阀259b-590jb,
mac电磁阀250b-610jb,
mac电磁阀254b-870jb,
mac电磁阀256b-111jb,
mac电磁阀257b-122jb,
mac电磁阀258b-221jb,
mac电磁阀259b-592jb,
mac电磁阀256b-611jb,
mac电磁阀257b-872jb,
mac电磁阀258b-110jd,
mac电磁阀259b-120ja,
mac电磁阀250b-220jc,
mac电磁阀254b-590ba,
mac电磁阀256b-610ea,
mac电磁阀257b-870jd,
mac电磁阀258b-111ja,
mac电磁阀259b-122jc,
mac电磁阀250b-221ba,
mac电磁阀254b-592ea,
mac电磁阀256b-611jd,
mac电磁阀257b-872ja,
mac电磁阀268b-110jb,
mac电磁阀279b-120jb,
mac电磁阀286b-220jb,
mac电磁阀267b-590jb,
mac电磁阀278b-610jb,
mac电磁阀289b-870jb,
mac电磁阀269b-111jb,
mac电磁阀278b-122jb,
mac电磁阀287b-221jb,
mac电磁阀264b-592jb,
mac电磁阀270b-611jb,
mac电磁阀280b-872jb,
mac电磁阀264b-110jd,
mac电磁阀276b-120ja,
mac电磁阀287b-220jc,
mac电磁阀268b-590ba,
mac电磁阀279b-610ea,
mac电磁阀280b-870jd,
mac电磁阀264b-111ja,
mac电磁阀276b-122jc,
mac电磁阀287b-221ba,
mac电磁阀268b-592ea,
mac电磁阀279b-611jd,
mac电磁阀280b-872ja,
mac电磁阀161b-501jb,
mac电磁阀130b-111ja,
mac电磁阀161b-501jb
mac电磁阀117b-501baaa,
mac电磁阀117b-111baaa,
mac电磁阀111b-871jb,
mac电磁阀111b-291ja
mac电磁阀166b-611ba,
mac电磁阀166b-611jm,
mac电磁阀130b-612ja,
mac电磁阀116b-591b-aaa,
mac电磁阀116b-611jb,
mac电磁阀111b-503jd,
mac电磁阀111b-611jb ,
mac电磁阀111b-611jb,
mac电磁阀111b-511jm,
mac电磁阀111b-121caaa,
mac电磁阀111b-511jb,
mac电磁阀111b-511ja,
mac电磁阀111b-611jm,
mac电磁阀11b-6115m,
mac电磁阀111b-g115m,
mac电磁阀111b-221jb,
mac电磁阀111b-111aa,
mac电磁阀116b-501baaa,
mac电磁阀116b-121jb,
mac电磁阀116b-611jm,
mac电磁阀116b-611ba,
mac电磁阀117b-871jb,
mac电磁阀117b-121jd,
mac电磁阀117b-121daaa,
mac电磁阀117b-291vaa,
mac电磁阀121b-111ba,
mac电磁阀121b-121ba,
mac电磁阀121b-501ba,
mac电磁阀121b-551ba,
mac电磁阀121b-611ba,
mac电磁阀121b-871ba,
mac电磁阀121b-111ja,
mac电磁阀121b-121jb,
mac电磁阀121b-501jc,
mac电磁阀121b-551jd,
mac电磁阀121b-611ja,
mac电磁阀121b-871jb,
mac电磁阀111b-111ba,
mac电磁阀131b-121ba,
mac电磁阀141b-501ba,
mac电磁阀161b-551ba,
mac电磁阀171b-611ba,
mac电磁阀181b-871ba,
mac电磁阀122b-111ja,
mac电磁阀120b-121jb,
mac电磁阀122b-111ba,
mac电磁阀123b-121ba,
mac电磁阀124b-501ba,
mac电磁阀125b-551ba,
mac电磁阀126b-611ba,
mac电磁阀127b-871ba,
mac电磁阀128b-111ja,
mac电磁阀129b-121jb,
mac电磁阀122b-501jc,
mac电磁阀123b-551jd,
mac电磁阀124b-611ja,
mac电磁阀125b-871jb,
mac电磁阀116b-111ba,
mac电磁阀137b-121ba,
mac电磁阀148b-501ba,
mac电磁阀169b-551ba,
mac电磁阀172b-611ba,
mac电磁阀180b-871ba,
mac电磁阀123b-111ja,
mac电磁阀124b-121jb,
mac电磁阀123b-111ba,
mac电磁阀124b-121ba,
mac电磁阀125b-501ba,
mac电磁阀126b-551ba,
mac电磁阀127b-611ba,
mac电磁阀128b-871ba,
mac电磁阀113b-111ja,
mac电磁阀123b-121jb,
mac电磁阀133b-501jc,
mac电磁阀145b-551jd,
mac电磁阀166b-611ja,
mac电磁阀177b-871jb,
mac电磁阀187b-111ba,
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mac电磁阀52a-11-coa-dm-ddja-1jb,
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mac电磁阀57d-53-ra,
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mac电磁阀58d-64-501ja,
mac电磁阀58c-16-111ja,
mac电磁阀52a-11-coa-dm-ddaj-1jm 2,
mac电磁阀52a-11-aob-gm-gemd-1ka,
mac电磁阀52a-11-aob-gemo-ikj
mac电磁阀52a-11-coa-dm-ddfj-1jb,
mac电磁阀52a-11-doa-dm-dddj-4kd,
mac电磁阀52a-11-doa-dm-ddaj-1ke
mac电磁阀52a-11-dob,
mac电磁阀52a-11-doc-dm-dddj-4kd,
mac电磁阀52a-14-dob-dm-ddaj-1kf
mac电磁阀55b-12-pi-121ja,
mac电磁阀55b-14-pi-611jj 4,
mac电磁阀55b-11-po-111ca,
mac电磁阀55b-14-p1-501ba,
mac电磁阀55b-12-pi-121ca,
mac电磁阀55b-12-pi-121ca
mac电磁阀55b-14-pz-501ba,
mac电磁阀55b-11-p1-111aa
mac电磁阀57d-32-611ca,
mac电磁阀57d-51-ra,
mac电磁阀57d-52-ra,
mac电磁阀58d-76-111ja,
mac电磁阀58c-18-501ba,
mac电磁阀58c-43-11ca,
mac电磁阀58d-33-117aa,
mac电磁阀58d-36-111ja,
mac电磁阀58d-74g-501ja,
mac电磁阀58c-12-111aa,
mac电磁阀82a-ac-bka-tm-ddap-1da 3,
mac电磁阀92b-aah-bja-dm-djbp-1dg 2,
mac电磁阀82a-ac-bka-tm-daap-1da,
mac电磁阀92b-aab-had-dm-ddap-1dn,
mac电磁阀92b-aba-ooo-dm-ddap-1dm,
mac电磁阀811c-pm-111ca-155,
mac电磁阀811c-pm-611jc-1524,
mac电磁阀916b-pm-611jb,
mac电磁阀811c-pm-591ba-155,
mac电磁阀811c-pm-111da-143,
mac电磁阀811c-pm-121ba-155,
mac电磁阀811c-pm-501ca-152,
mac电磁阀914b-pm-121jd,
mac电磁阀916b-pm-611jb+pme-
mac电磁阀611jb 6511b-222-pm-501da9,
mac电磁阀6511b-252-pm-871da
mac电磁阀6521b-313-pm-111da,
mac电磁阀6321d-513-pm-111d,
mac电磁阀56c-63-121jb,
mac电磁阀544b-aba-gdfa-1ka,
mac电磁阀44b-aba-gdfa-1ka,
mac电磁阀411a-d0a-dm-ddaa-1ba,
mac电磁阀6521d-010-pm-111da,
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mac电磁阀6211c-251-pm-11da,
mac电磁阀6311d-112-dm-111da,
mac电磁阀811c-pm-611ca-152,
mac电磁阀811c-pm-611ba-126,
mac电磁阀44b-aba-gdca-1bc,
mac电磁阀6311d-351-pm-111da,
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mac电磁阀6211c-000-pm-111da,
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mac电磁阀6321d-113-pm-111da,
mac电磁阀6311d-351-pm-501da,
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mac电磁阀6521b-213-pm-111da,
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mac电磁阀pid-611caaa,
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马弗炉（箱式电阻炉）
美国mac电磁阀结构简单、体积小、重量轻，只由少数几个零件组成。而且只需旋转90°即可快速启闭，操作简单，同时该阀门具有良好的流体控制特性。蝶阀处于*开启位置时，蝶板厚度是介质流经阀体时的阻力，因此通过该阀门所产生的压力降很小，故具有较好的流量控制特性。
美国mac电磁阀有弹密封和金属的密封两种密封型式。弹性密封阀门，密封圈可以镶嵌在阀体上或附在蝶板周边。
采用金属密封的阀门一般比弹性密封的阀门寿命长，但很难做到*密封。金属密封能适应较高的工作温度，弹性密封则具有受温度限制的缺陷。
如果要求蝶阀作为流量控制使用，主要的是正确选择阀门的尺寸和类型。蝶阀的结构原理尤其适合制作大口径阀门。蝶阀不仅在石油、煤气、化工、水处理等一般工业上得到广泛应用，而且还应用于热电站的冷却水系统。
常用的美国mac电磁阀是用双头螺栓将阀门连接在两管道法兰之间，法兰式蝶阀是阀门上带有法兰，用螺栓将阀门上两端法兰连接在管道法兰上。
其手柄、手轮的大小是按正常人为设计的。因此，在阀门使用上规定：不答应操作者借助杠杆和长扳手启、闭阀门。同时手柄长度、手轮直径小于320mm的，只答应一个人操作；直径等于或超过320mm的手轮，答应两人共同操作，或者答应一人借助适当的杠杆（一般长度不超过0.5m）操作。但隔膜阀、非金属阀门是严禁使用杠杆或长扳手操作的，也不答应用过大、过猛的力关闭阀门。
有的操作者习惯使用杠杆和长扳手操作手动阀门，认为关闭力越大越好，其实不然。这样会造成阀门过早损坏，甚至酿成事故。实践证实：除撞击式手轮外，过大过猛地操作阀门轻易损坏手轮、手柄，擦伤阀杆和密封面，甚至压坏密封面。其次，手轮、手柄损坏或丢失后，应及时配齐，不答应用活扳手代用。
美国mac电磁阀之类的阀门，关闭或开启到头（即下死点或上死点）时要回转1/4——1/2圈，使螺纹更好密合，以有利操作时检查，以免拧得过紧损坏阀门。
较大口径的美国mac电磁阀和截止阀，有的设有旁通阀。旁通阀的作用是平衡进出口压差，减少开启力矩。开启时，应先打开旁通阀，然后再开启大阀门。
开启蒸汽阀门前必须先将管道预热，排出凝聚水。开启时要缓慢，以免产生水锤现象，损坏阀门和设备。开闭球阀、蝶阀、旋塞阀时，当阀杆顶面的沟槽与通道平行时，表明阀门的全开启位置；当阀杆向左或向右旋90度时，沟槽与通道垂直时，表明阀门在全关闭位置。有美国mac电磁阀以扳手与通道平行为开启，垂直为关闭。三通、四通阀门的操作应按开启、关闭、换向的标记进行，操作完毕后应取下活动手柄。
对有标心的美国mac电磁阀应检查调整好全开或全闭的指示位置。明杆闸阀、截止阀也应雇它们全开和全闭的位置，这样可以避免全开时顶死点。阀门全闭时，可借助标尺和记号发现关闭件脱落或顶住异物，以便排除故障。
新安装的管道和设备，内面脏物、焊碴等物较多。常开手动阀门密封面上轻易粘有脏物，应用微开方法，让高速介质冲走这些异物，再轻轻关闭。有的手动阀门在关闭后，温度下降，阀件收缩，使密封面产生细小缝隙，出现泄漏。这样应在关闭后，在适当时间再关一次。阀门操作正确与否，直接影响阀门的使用寿命。
mac电磁阀型号：
mac电磁阀3-aca-ddaa-1ba,
mac电磁阀3-aca-daba-1ba
mac电磁阀3-aca-ddba-1ba,
mac电磁阀3-aca-ddfa-1ba
mac电磁阀3-aa1-ddfj-1jm,
mac电磁阀3-aca-ddfj-1ka
mac电磁阀3-sac-daca-1ba,
mac电磁阀3-aaa-daca-1ba
mac电磁阀3-aca-ddaj-1jb,
mac电磁阀3-scc-ddaa-1ba
mac电磁阀3-aaa-ddca-1bk,
mac电磁阀3-aaa-daaa-1ca
mac电磁阀3-aaa-daaa-1ba,
mac电磁阀3-b00-dabj-1fm,
mac电磁阀3-sac-daaa-1ba,
mac电磁阀3-scc-daba-1ba
mac电磁阀3-aaa-daca-2ba,
mac电磁阀3-aaa-ddcc-1bk,
mac电磁阀3-aa1-ddfj-1jb,
mac电磁阀3-aca-dbfa-1ba
mac电磁阀3-aca-dbaa-eba,
mac电磁阀3-aca-dcaa-1ba,
mac电磁阀3-aca-defj-1jj,
mac电磁阀3-aaa-dffa-1ba
mac电磁阀3-sll-0gaa-eda,
mac电磁阀3-aaa-ddaj-1jd,
mac电磁阀3-aaa-ddaj-1kd,
mac电磁阀3-aca-ddaa-1ab
mac电磁阀3-aab-ddaa-1ba,
mac电磁阀3-aaa-ddaj-1jd,
mac电磁阀3-aaa-daba-1ba,
mac电磁阀3-aaa-daaa-1ba,
mac电磁阀3-baa-daaa-1ba,
mac电磁阀3-bcb-dabb-2ka,
mac电磁阀3-edc-dacc-3kd,
mac电磁阀3-sed-dfbh-4jb,
mac电磁阀3-toe-ddaj-1jd,
mac电磁阀3-aaf-ddba-2ba,
mac电磁阀3-bco-ddfb-3ka,
mac电磁阀3-eda-daac-4kd,
mac电磁阀3-seb-dabh-1jb,
mac电磁阀3-toc-dacj-2jd,
mac电磁阀3-aad-dfba-2ba,
mac电磁阀3-bce-ddab-3ka,
mac电磁阀3-edf-ddbc-4kd,
mac电磁阀3-seo-ddfh-1jb,
mac电磁阀3-toa-daaj-2jd,
mac电磁阀3-aab-daba-3ba,
mac电磁阀3-bcc-dacb-4ka,
mac电磁阀3-edd-dfbc-1kd,
mac电磁阀3-see-ddah-2jb,
mac电磁阀3-tof-ddbj-3jd,
mac电磁阀3-b00-ddbb-1bk,
mac电磁阀3-b00-ddej-1tj,
mac电磁阀3-sac-ddaa-1ba,
mac电磁阀3-scc-daaa-1ba,
mac电磁阀3-scc-ddaj-1ka ,
mac电磁阀4-bc1-ddaa-1ba,
mac电磁阀4-aa1-ddfa-1ba
mac电磁阀4-ac1-ddaa-1ba,
mac电磁阀4-aa1-ddaa-1cm
mac电磁阀4-bc1-daba-1ba,
mac电磁阀4-sa2-daca-1ba
mac电磁阀4-sc1-ddaa-1ba,
mac电磁阀4-aa1-ddfj-1jb,
mac电磁阀4-ac1-ddna-1ba,
mac电磁阀4-ac1-ddna-tha,
mac电磁阀4-ac1-ddna-1ba,
mac电磁阀4-se2-daba-1ba,
mac电磁阀4-aa1-ddaj-1kj,
mac电磁阀4-aa1-ddaj-0ka,
mac电磁阀4-aa1-ddaj-0ka,
mac电磁阀4-aa1-ddaj-1kj,
mac电磁阀4-ac1-daca-1ba,
mac电磁阀4-sa1-dacc-1ba,
mac电磁阀4-fa2-daba-2cm,
mac电磁阀4-aa1-ddfa-1da,
mac电磁阀4-aa1-ddaj-1kd,
mac电磁阀4-bc1-ddfj-1kd,
mac电磁阀4-bc1-daaj-1ka,
mac电磁阀4-sc2-daaj-1kf,
mac电磁阀4-gc1-ddaa-1ba,
mac电磁阀4-aa1-dacc-1ba,
mac电磁阀4-bc1-defj-1jm,
mac电磁阀4-sc1-daba-1ba
mac电磁阀4-sc2-ddfj-4kd,
mac电磁阀4-sc2-ddvd-1ba,
mac电磁阀4-ea1-ddaa-1ba,
mac电磁阀4-sa1-daca-1ba
mac电磁阀4-aa1-ddfa-1da,
mac电磁阀4-aa1-ddba-1ba,
mac电磁阀4-bc1-ddfa-1ba-clsf,
mac电磁阀4-aa1-ddaa-1ba,
mac电磁阀4-sa1-daaa-1ba,
mac电磁阀4-fa1-daca-1ba,
mac电磁阀4-laa-dffj-3kd,
mac电磁阀4-aa1-ddfa-1jb,
mac电磁阀4-aa1-bdfj-1jb,
mac电磁阀4-bc1-defj-1ba,
mac电磁阀4-bc1-edfj-1jm,
mac电磁阀4-gc1-daaa-1ba,
mac电磁阀4-gc1-daaj-1ka,
mac电磁阀4-gc1-dabc-1ba,
mac电磁阀4-sa1-daca-1ba,
mac电磁阀34b-aab-gdnb-1be,
mac电磁阀34b-aba-gdfa-1ka
mac电磁阀34b-aaa-gdka-3ba,
mac电磁阀34b-abb-gdfa-1ba,
mac电磁阀34b-aaa-gddo-1kj9,
mac电磁阀34b-aba-gdfa-1ba,
mac电磁阀34b-aba-gdfa-1ba,
mac电磁阀34b-aaa-gdfa-1kv,
mac电磁阀34b-aaa-gdfa-1ba,
mac电磁阀34b-aaa-gdfa-1kv,
mac电磁阀34b-noo-gdnc-1kt 2,
mac电磁阀34c-aaa-gaaa-1ka,
mac电磁阀34c-bbb-ghcb-1kt,
mac电磁阀34c-loo-gdcc-1ba,
mac电磁阀34b-loo-gdfa-1ba,
mac电磁阀34c-naa-gddh-1bt,
mac电磁阀34c-loo-gdfa-1ku,
mac电磁阀34c-aaa-gdfa-2ka,
mac电磁阀34c-bbb-gdnb-2kt
mac电磁阀34c-loo-gaac-2ba,
mac电磁阀34c-naa-ghcb-2bt,
mac电磁阀34c-aaa-gdcc-2hb
mac电磁阀225b-501ba,
mac电磁阀225b-611ba,
mac电磁阀225b-121caaa
mac电磁阀225b-121ba,
mac电磁阀225b-761jj,
mac电磁阀225b-121ba
mac电磁阀225b-121ca,
mac电磁阀225b-111caaa,
mac电磁阀225b-121aa
mac电磁阀225b-781naaa,
mac电磁阀225b-121ja,
mac电磁阀225b-510jc,
mac电磁阀225b-611c
mac电磁阀225b-110jb,
mac电磁阀225b-120jb,
mac电磁阀225b-220jb,
mac电磁阀225b-590jb,
mac电磁阀225b-610jb,
mac电磁阀225b-870jb,
mac电磁阀225b-111jb,
mac电磁阀225b-122jb,
mac电磁阀225b-221jb,
mac电磁阀225b-592jb,
mac电磁阀225b-611jb,
mac电磁阀225b-872jb,
mac电磁阀225b-110jd,
mac电磁阀225b-120ja,
mac电磁阀225b-220jc,
mac电磁阀225b-590ba,
mac电磁阀225b-610ea,
mac电磁阀225b-870jd,
mac电磁阀225b-111ja,
mac电磁阀225b-122jc,
mac电磁阀225b-221ba,
mac电磁阀225b-592ea,
mac电磁阀225b-611jd,
mac电磁阀225b-872ja,
mac电磁阀265b-110jb,
mac电磁阀275b-120jb,
mac电磁阀285b-220jb,
mac电磁阀265b-590jb,
mac电磁阀275b-610jb,
mac电磁阀285b-870jb,
mac电磁阀265b-111jb,
mac电磁阀275b-122jb,
mac电磁阀285b-221jb,
mac电磁阀265b-592jb,
mac电磁阀275b-611jb,
mac电磁阀285b-872jb,
mac电磁阀265b-110jd,
mac电磁阀275b-120ja,
mac电磁阀285b-220jc,
mac电磁阀265b-590ba,
mac电磁阀275b-610ea,
mac电磁阀285b-870jd,
mac电磁阀265b-111ja,
mac电磁阀275b-122jc,
mac电磁阀285b-221ba,
mac电磁阀265b-592ea,
mac电磁阀275b-611jd,
mac电磁阀285b-872ja,
mac电磁阀220b-110jb,
mac电磁阀224b-120jb,
mac电磁阀226b-220jb,
mac电磁阀227b-590jb,
mac电磁阀228b-610jb,
mac电磁阀229b-870jb,
mac电磁阀220b-111jb,
mac电磁阀224b-122jb,
mac电磁阀226b-221jb,
mac电磁阀227b-592jb,
mac电磁阀228b-611jb,
mac电磁阀229b-872jb,
mac电磁阀224b-110jd,
mac电磁阀226b-120ja,
mac电磁阀227b-220jc,
mac电磁阀228b-590ba,
mac电磁阀229b-610ea,
mac电磁阀224b-870jd,
mac电磁阀226b-111ja,
mac电磁阀227b-122jc,
mac电磁阀228b-221ba,
mac电磁阀229b-592ea,
mac电磁阀220b-611jd,
mac电磁阀224b-872ja,
mac电磁阀250b-111caaa,
mac电磁阀250b-111ja,
mac电磁阀250b-501ja,
mac电磁阀250b-611caaa,
mac电磁阀256b-110jb,
mac电磁阀257b-120jb,
mac电磁阀258b-220jb,
mac电磁阀259b-590jb,
mac电磁阀250b-610jb,
mac电磁阀254b-870jb,
mac电磁阀256b-111jb,
mac电磁阀257b-122jb,
mac电磁阀258b-221jb,
mac电磁阀259b-592jb,
mac电磁阀256b-611jb,
mac电磁阀257b-872jb,
mac电磁阀258b-110jd,
mac电磁阀259b-120ja,
mac电磁阀250b-220jc,
mac电磁阀254b-590ba,
mac电磁阀256b-610ea,
mac电磁阀257b-870jd,
mac电磁阀258b-111ja,
mac电磁阀259b-122jc,
mac电磁阀250b-221ba,
mac电磁阀254b-592ea,
mac电磁阀256b-611jd,
mac电磁阀257b-872ja,
mac电磁阀268b-110jb,
mac电磁阀279b-120jb,
mac电磁阀286b-220jb,
mac电磁阀267b-590jb,
mac电磁阀278b-610jb,
mac电磁阀289b-870jb,
mac电磁阀269b-111jb,
mac电磁阀278b-122jb,
mac电磁阀287b-221jb,
mac电磁阀264b-592jb,
mac电磁阀270b-611jb,
mac电磁阀280b-872jb,
mac电磁阀264b-110jd,
mac电磁阀276b-120ja,
mac电磁阀287b-220jc,
mac电磁阀268b-590ba,
mac电磁阀279b-610ea,
mac电磁阀280b-870jd,
mac电磁阀264b-111ja,
mac电磁阀276b-122jc,
mac电磁阀287b-221ba,
mac电磁阀268b-592ea,
mac电磁阀279b-611jd,
mac电磁阀280b-872ja,
mac电磁阀161b-501jb,
mac电磁阀130b-111ja,
mac电磁阀161b-501jb
mac电磁阀117b-501baaa,
mac电磁阀117b-111baaa,
mac电磁阀111b-871jb,
mac电磁阀111b-291ja
mac电磁阀166b-611ba,
mac电磁阀166b-611jm,
mac电磁阀130b-612ja,
mac电磁阀116b-591b-aaa,
mac电磁阀116b-611jb,
mac电磁阀111b-503jd,
mac电磁阀111b-611jb ,
mac电磁阀111b-611jb,
mac电磁阀111b-511jm,
mac电磁阀111b-121caaa,
mac电磁阀111b-511jb,
mac电磁阀111b-511ja,
mac电磁阀111b-611jm,
mac电磁阀11b-6115m,
mac电磁阀111b-g115m,
mac电磁阀111b-221jb,
mac电磁阀111b-111aa,
mac电磁阀116b-501baaa,
mac电磁阀116b-121jb,
mac电磁阀116b-611jm,
mac电磁阀116b-611ba,
mac电磁阀117b-871jb,
mac电磁阀117b-121jd,
mac电磁阀117b-121daaa,
mac电磁阀117b-291vaa,
mac电磁阀121b-111ba,
mac电磁阀121b-121ba,
mac电磁阀121b-501ba,
mac电磁阀121b-551ba,
mac电磁阀121b-611ba,
mac电磁阀121b-871ba,
mac电磁阀121b-111ja,
mac电磁阀121b-121jb,
mac电磁阀121b-501jc,
mac电磁阀121b-551jd,
mac电磁阀121b-611ja,
mac电磁阀121b-871jb,
mac电磁阀111b-111ba,
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mac电磁阀122b-111ja,
mac电磁阀120b-121jb,
mac电磁阀122b-111ba,
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mac电磁阀126b-611ba,
mac电磁阀127b-871ba,
mac电磁阀128b-111ja,
mac电磁阀129b-121jb,
mac电磁阀122b-501jc,
mac电磁阀123b-551jd,
mac电磁阀124b-611ja,
mac电磁阀125b-871jb,
mac电磁阀116b-111ba,
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mac电磁阀172b-611ba,
mac电磁阀180b-871ba,
mac电磁阀123b-111ja,
mac电磁阀124b-121jb,
mac电磁阀123b-111ba,
mac电磁阀124b-121ba,
mac电磁阀125b-501ba,
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mac电磁阀127b-611ba,
mac电磁阀128b-871ba,
mac电磁阀113b-111ja,
mac电磁阀123b-121jb,
mac电磁阀133b-501jc,
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mac电磁阀128b-121ba,
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mac电磁阀176b-871ba,
mac电磁阀185b-111ja,
mac电磁阀125b-121jb,
mac电磁阀134b-111ba,
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mac电磁阀175b-111ja,
mac电磁阀166b-121jb,
mac电磁阀147b-501jc,
mac电磁阀137b-551jd,
mac电磁阀128b-611ja,
mac电磁阀139b-871jb,
mac电磁阀143b-111ba,
mac电磁阀166b-121ba,
mac电磁阀175b-501ba,
mac电磁阀185b-551ba,
mac电磁阀129b-611ba,
mac电磁阀130b-112ja,
mac电磁阀166b-611jb,
mac电磁阀161b-611jd,
mac电磁阀161b-611jd
mac电磁阀130b-292ja,
mac电磁阀166b-611ja,
mac电磁阀1668-611,
mac电磁阀33a-aab-rdfa-1tb,
mac电磁阀33a-aaa-rdfa-1ba,
mac电磁阀33a-aab-rdfa-1ba,
mac电磁阀33a-aab-rdaa-0ba ,
mac电磁阀33a-aab-rdaa-1ta,
mac电磁阀3a-bab-rdbb-1bb,
mac电磁阀33a-lab-rdfc-2da
mac电磁阀33a-mab-rdgp-0db,
mac电磁阀33a-aob-rdma-1tb,
mac电磁阀33a-bob-rdaa-0ba
mac电磁阀33a-lob-rdbb-1bb,
mac电磁阀33a-mob-rdfc-2db,
mac电磁阀33a-lob-rdbb-1bb
mac电磁阀34c-l00-gdfa-1ba
mac电磁阀34b-l00-gdfa-1ba
mac电磁阀3-aca-ddaa-1ba
mac电磁阀55b-14-pe-501ba
mac电磁阀36a-aca-jdaa-1ba,
mac电磁阀36a-aza-eaaa-ejt,
mac电磁阀36a-aaa-jdaa-1ba,
mac电磁阀36a-aaa-jdba-1bg,
mac电磁阀36a-aaa-jdba-1ba,
mac电磁阀36a-aaa-jdab-1ba,
mac电磁阀36a-aaa-jaaa-1ba,
mac电磁阀36a-aaa-jaaa-1gg,
mac电磁阀36a-aca-jdca-1ba,
mac电磁阀36a-aca-jdac-1ba,
mac电磁阀36a-aca-jdaa-1ba,
mac电磁阀36a-aca-jaka-1ka,
mac电磁阀36a-aca-jaka-1ba,
mac电磁阀36a-aca-jdca-1ja,
mac电磁阀36a-ada-jdaa-1ba,
mac电磁阀36a-ada-jdpa-1ba,
mac电磁阀36a-ada-jdap-1ba,
mac电磁阀36a-aoa-jdaa-1ba,
mac电磁阀36a-aoa-jdab-1ba,
mac电磁阀36a-aea-jdaa-1ba,
mac电磁阀36a-aza-eaaa-1jt,
mac电磁阀36a-jaa-jdaa-1ba,
mac电磁阀36a-sca-jdaa-1ba,
mac电磁阀36a-lda-jdaa-1ba,
mac电磁阀36a-aab-jdaa-1ba,
mac电磁阀36a-acc-jdaa-1ba,
mac电磁阀36a-add-jdaa-1ba,
mac电磁阀36a-aeo-jdaa-1ba,
mac电磁阀36a-jab-jdaa-1ba,
mac电磁阀36a-jab-jdaa-1ja,
mac电磁阀36a-scc-jdaa-1ba,
mac电磁阀36a-ldd-jdaa-1ba,
mac电磁阀36a-aea-jdab-1ba,
mac电磁阀36a-aoa-jdac-1ba,
mac电磁阀36a-jaa-jdap-1ba,
mac电磁阀36a-sca-jdab-1ba,
mac电磁阀36a-lda-jdac-1ba,
mac电磁阀36a-aab-jdap-1ba,
mac电磁阀36a-acc-jdab-1ba,
mac电磁阀36a-add-jdac-1ba,
mac电磁阀36a-aeo-jdap-1ba,
mac电磁阀36a-aoa-jdab-1ba,
mac电磁阀36a-jab-jdaa-1ja,
mac电磁阀36a-scc-jdaa-1jb,
mac电磁阀36a-ldd-jdaa-1ga,
mac电磁阀36a-ada-jdpa-1jb,
mac电磁阀37a-ado-hdaa-1ba,
mac电磁阀37a-aba-haba-1ba,
mac电磁阀37a-aba-hdca-1ba,
mac电磁阀37a-aba-haba-1ma,
mac电磁阀37a-aba-hdca-1ka,
mac电磁阀37a-aca-haba-1ba,
mac电磁阀37a-aco-haba-1ba,
mac电磁阀37a-ada-haba-1ba,
mac电磁阀37a-ado-haba-1ba,
mac电磁阀37a-bca-haba-1ba,
mac电磁阀37a-eca-haba-1ba,
mac电磁阀37a-eca-haaa-1ba,
mac电磁阀37a-fca-haba-1ba,
mac电磁阀37a-fco-haba-1ba,
mac电磁阀37a-aaa-haba-1ba,
mac电磁阀37a-aaa-hdba-1ba,
mac电磁阀37a-baa-haba-1ba,
mac电磁阀37a-baa-hdaa-1mk,
mac电磁阀37a-baa-hdaa-1ba,
mac电磁阀37a-baa-haba-1km,
mac电磁阀37a-bba-haba-1ba,
mac电磁阀37a-bbo-haba-1ba,
mac电磁阀37a-bca-haaa-1ba,
mac电磁阀37a-bda-haba-1ba,
mac电磁阀37a-bda-haaa-1ba,
mac电磁阀37a-eaa-haba-1ba,
mac电磁阀37a-eao-haba-1ba,
mac电磁阀37a-eba-haba-1ba,
mac电磁阀37a-eba-hdfa-1ba,
mac电磁阀37a-eca-haba-1ka,
mac电磁阀37a-eca-haaa-1ma,
mac电磁阀37a-eda-haba-1ba,
mac电磁阀37a-eda-haa-1ba,
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mac电磁阀37a-faa-haba-1ba,
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mac电磁阀37a-fda-haba-1ba,
mac电磁阀37a-fba-hdfa-1ba,
mac电磁阀37a-fdo-hdaa-1ba,
mac电磁阀37a-fba-haba-1mk,
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mac电磁阀52a-14-dob-dm-ddaj-1kf
mac电磁阀55b-12-pi-121ja,
mac电磁阀55b-14-pi-611jj 4,
mac电磁阀55b-11-po-111ca,
mac电磁阀55b-14-p1-501ba,
mac电磁阀55b-12-pi-121ca,
mac电磁阀55b-12-pi-121ca
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mac电磁阀58c-18-501ba,
mac电磁阀58c-43-11ca,
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mac电磁阀58d-74g-501ja,
mac电磁阀58c-12-111aa,
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mac电磁阀92b-aah-bja-dm-djbp-1dg 2,
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mac电磁阀811c-pm-111ca-155,
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mac电磁阀811c-pm-111da-143,
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mac电磁阀811c-pm-501ca-152,
mac电磁阀914b-pm-121jd,
mac电磁阀916b-pm-611jb+pme-
mac电磁阀611jb 6511b-222-pm-501da9,
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mac电磁阀6311d-112-dm-111da,
mac电磁阀811c-pm-611ca-152,
mac电磁阀811c-pm-611ba-126,
mac电磁阀44b-aba-gdca-1bc,
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mac电磁阀411a-c0a-bm-ddaa-1ba,
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mac电磁阀6211c-000-pm-111da,
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mac电磁阀6321d-113-pm-111da,
mac电磁阀6311d-351-pm-501da,
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mac电磁阀6521b-213-pm-111da,
mac电磁阀56c-18-611ja,
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mac电磁阀ppc5c-acb-agaa-caa-gb,
mac电磁阀pid-111ja,
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mac电磁阀pid-501caaa,
mac电磁阀pid-611caaa,
mac电磁阀pid-611jm,
mac电磁阀pme-121jm,
mac电磁阀pme-591dabe ,
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mac电磁阀pme-611caaa
mac电磁阀pem-611jb,
mac电磁阀pme-611dabe,
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mac电磁阀pme-691dabe,
mac电磁阀nvfs3000-20a
……
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