10203u美国仙童减压阀概述：

美国仙童减压阀是通过调节，将进口压力减至某一需要的出口压力，并依靠介质本身的能量，使出口压力自动保持稳定的阀门。从流体力学的观点看，减压阀是一个局部阻力可以变化的节流元件，即通过改变节流面积，使流速及流体的动能改变，造成不同的压力损失，从而达到减压的目的。然后依靠控制与调节系统的调节，使阀后压力的波动与弹簧力相平衡，使阀后压力在一定的误差范围内保持恒定。
美国仙童减压阀按结构形式可分为薄膜式、弹簧薄膜式、活塞式、杠杆式和波纹管式；按阀座数目可人为单座式和双座式；按阀瓣的位置不同可分为正作用式和反作用式。先导式减压阀当减压阀的输出压力较高或通径较大时，用调压弹簧直接调压，则弹簧刚度必然过大，流量变化时，输出压力波动较大，阀的结构尺寸也将增大。为了克服这些缺点，可采用先导式减压阀。先导式减压阀的工作原理与直动式的基本相同。先导式减压阀所用的调压气体，是由小型的直动式减压阀供给的。若把小型直动式减压阀装在阀体内部，则称为内部先导式减压阀；若将小型直动式减压阀装在主阀体外部，则称为外部先导式减压阀
的减压保障系统。无论选用比例式还是可调式减压阀，其减压比P1∶P2不宜选择过大，一般应控制在5∶1之内。超过这个范围易产生气蚀现象，损坏阀件，产生啸叫噪音。有些活塞式减压阀，制造厂在其阀体上加工一个直径1.5mm左右的小孔，其功能是让阀芯运动时起到透吸气作用，维护管理时应注意千万不要将小孔塞住，否则影响减压阀的正常运行。
常见型号
10202br,10202bt,10202c,10202cl,10202cr,10202ct,10202cu, 10202e,10202el,10202et,10202h,10202hjn,10202hn,10202j,10202jn, 10202jnt,10202jsc,10202l,10202n,10202nscu,10202nt,10202nu,10202p, 10202r,10202ru,10202sc,10202t,10202u,10203,10203a,10203b,10203be,10203c, 10203ct,10203cu,10203el,10203en,10203ent,10203et,10203ht,10203j,10203jn,10203jnt, 10203ju,10203l,10203n,10203nu10203r,10203t,10203u,10204,10204a,10204b,10204bet,10204c,10204e,10204ejp,10204en, 10204h,10204hjn,10204j,10204jn,10204n,10204rn,10204t,10204u,10212,10212ae,10212b,10212be, 10212beh,10212bejsc, 10212besc,10212bh,10212bt,10212c,10212ch,10212cj,10212clt,10212cp,10212cu,10212e,10212eh, 10212ehj,10212eht,10212ej,10212ejlt,10212ejnt,10212el,10212en,10212et10212h,10212hjn10212hjnsc,10212hjp,10212hl,10212hn,10212hsc,10212j,10212jlt,10212jn,10212jnsct,10212jnu, 10212jsc,10212jt,10212l,10212lt,10212ltu,10212n,10212nt,10212nu,10212p,10212r,10212sc,10212t10212tu,10212u,10213,10213acr,10213c,10213cl,10213e,10213eju,10213et,10213hn,10213j,10213jn10213jnu,10213ju,10213l,10213lt,10213n,10213nt,10213nu,10213r,10213t,10213u,10214,10214a, 10214bejsc, 10214bt,10214c,10214ce,10214clt,10214e,10214eh,10214ehj,10214eht,10214h,10214hn,10214j, 10214jn,10214jnu,10214l,10214n,10214nt,10214t,10214u,10222,10222a,10222asc,10222b,10222beh,
10222bh,10222bj, 10222c,10222cl,10222ct,10222cu,10222e,10222eh,10222ej,,10222ejlt,10222el,10222en, 10222ent,10222et,10222h,10222hj,10222hjn,10222hn,10222hsc,10222j,10222jn,10222jnsc,10222jnt, 10222jnu,10222jsc, 10222jt,10222ju,10222l,10222lt,10222n,10222nsc,10222nt,10222ntu,10222nu,10222p, 10222r,10222sc,10222t,10222tu,10222u,10223,10223a,10223ab,10223at,10223b10223be,10223bejt,10223c,10223ct,10223cu,10223e,10223eju,10223el,10223hn, 10223ht,10223j, 10223jn,10223jnt,10223jnu, 10223ju,10223l,10223lt,10223n,10223nt,10223nu,10223r,10223sc,10223t10223tu,10223u,10224,10224b,10224bejsc,10224bt,10224c,10224cu,10224e, 10224ejlt,10224en,10224h,10224hj,10224j,10224jn,
10224ju,10224l,10224n,10224nt,10224nu,10224t,10224u,10232,10232a10232ab,10232an,10232asc,10232b,10232be,10232beh,10232behjsc,10232bet, 10232btu,10232c,10232cb,10232ce,10232ch, 10232cj,10232ct,10232cu,10232e,10232eh,10232ehjsc,10232ej,10232ejn,10232el, 10232en,10232ent,10232esc,10232et,10232h,10232hj,10232hn,10232j,10232jn, 10232jnsc,10232jnt,10232jnu,10232jr,10232jsc, 10232jt,10232ju,10232l,10232n,10232nscu,10232nt,10232nu,10232p10232r,10232rh,10232ru,10232sc,10232t,10232u,10233,10233a,10233b
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