上海韦米机电设备有限公司

联系人：何洋

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减压阀的作用

减压阀的作用原理是靠阀内流道对水流的局部阻力降低水压，水压降的范围由连接阀瓣的薄膜或活塞两侧的进出口水压差自动调节。近年来又出现一些新型减压阀，如定比式减压阀。定比减压原理是利用阀体中浮动活塞的水压比控制，进出口端减压比与进出口侧活塞面积比成反比。这种减压阀工作平稳无振动；阀体内无弹簧，故无弹簧锈蚀、金属疲劳失效之虑；密封性能良好不渗漏，因而既减动压（水流动时）又减静压（流量为0时）；特别是在减压的同时不影响水流量。

水流通过减压阀虽有很大的水头损失，但由于减少了水的浪费并使系统流量分布合理、改善了系统布局与工况，因此总体上讲仍是节能的。减压阀的每一档弹簧只在一定的出口压力范围内适用，超出范围应更换弹簧。在介质工作温度比较高的场合，一般选用先导活塞式减压阀或先导波纹管式减压阀。介质为空气或水（液体）的场合，一般宜选用直接作用薄膜式减压阀或先导薄膜式减压阀。介质为蒸汽的场合，宜选用先导活塞式减压阀或先导波纹管式减压阀。为了操作、调整和维修的方便，减压阀一般应安装在水平管道上。

减压阀 运行操作

1.要避免存留脏物、杂物进入减压阀减压保障系统。新建或者改造工程的减压系统管网，很可能遗留沙粒、麻丝、杂物。投运前，一般都应进行水冲洗，满足清洁要求后，最后装上减压阀和过滤器滤芯，这样才能避免杂物流入减压阀，杜绝减压阀卡芯现象。在系统进入工作后，保障减压系统的水流畅通与否，与设置在系统上的过滤器流通能力关系密切，如滤芯被杂物严重吸附，则会影响减压阀的工作，为此必需对过滤器进行定期检查，及时清除污秽。实践表明这项工作2至3个月必须进行一次，有些可调式(弹簧式、薄膜式)减压阀，其主阀或者导阀自身设置过滤器，同样需要定期拆洗滤芯。

2.1用1备的减压阀组应定期轮换工作。大部分高层建筑生活给水减压阀减压保障系统，是以给水竖向分区设置的，一般设在每一给水分区总管上。考虑到众多用户的用水可靠安全性(住宅每一分区有几十户至上百户，公共建筑如宾馆、饭店，每一分区有几十套客房……)，设计时减压阀应两套并列安装(1用1备)。减压通路两侧都辅以闸阀或蝶阀，可启闭任一减压通道，为使并列的两套减压阀通道能正常工作，常规一个月轮流交换一次，搁置时间过长减压通道死水结垢，减压元件阀芯会卡住失效。

3.应及时排除管道中的积气。当空气进入减压管网或管网内随压力变化时气体从水中析出，这时区域内用户的水压极不稳定；处在供水最不利点用水器更是压力变化急骤，有时呈现虚假的峰值压力，有时还会抽吸断水，还有管网会伴随撞击声。产生这种现象，会影响燃气热水器、电热水器等稳定工作，严重时会被毁坏；对各种盥洗器具的进水连接管破坏力也很大，特别是目前常用的一些复合型连结软管，其强度较差，因此爆管的事件屡有发生；有些水表无法正确计量，出现用户不用水，水表也会不断地转动。为杜绝这类事故，应检查屋顶水箱生活给水总管的蓄水高程是否满足，如不满足水箱出水口处会产生水旋，吸入空气。排除这一故障可调整水箱内液位控制器的最低水位高程，经验表明一般最低水位距出水口应不小于0.3m。也可反复开启设置在分区、减压系统两侧的压力表放气旋塞，把已进入管网内的空气徐徐排出。如采取上述措施后，在分区总管末梢以下的一些用水器还出现上述现象，可以在这些部位增设自动排气装置。

4.注意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。

5.加强减压阀保障系统的管理巡视，要注意观察减压阀本身的工作动态。阀前、阀后压力数值接近，表明减压阀本身已存在故障。即活塞式减压阀的阀芯与阀体间的平面密封橡胶件损坏；薄膜式可调型减压阀主阀膜片有裂痕和O型圈损坏，及导阀连通管堵塞，造成减压阀减压作用削弱或者失效。这对分区管网危害极大，特别是许多用水设备可能因超压力而出现爆管，必须及时修复。比例式(活塞型)减压阀阀体上的透吸气小孔如出现滴漏不止，表明阀芯上几档O型密封圈已经磨损，要更换密封件。但在修理拆装减压元件时，要谨慎细心，调换内密封件；清理杂物时，应因势利导，不要用金属棒、硬梗撬阀的活动部位，使用木榔头和木柄敲击震动，慢慢拆卸阀内部件。修理完毕后重新安装时，一定要和阀门上的流向指示保持一致。

6.注意检查比例式减压阀的安装位置。高层内减压阀设计安装的位置不妥，会出现减压阀阀后压力忽高忽低，管网压力严重偏离允许范围，伴随毁坏淋浴器，水管爆裂和损坏用户水表等事故发生；有时也会水流不畅，分区内出现无规律的断水现象，影响用户用水。出现类似事故，检查整个减压阀减压分区给水系统，无疑点可找；拆卸减压阀过滤器等元件并无异常；有些物业管理单位甚至怀疑减压阀的技术性能，多次调换新的减压阀，也不能解决问题。这时可从检查比例减压阀设计安装位置是否合理着手，认真检查管网系统是否存在等位倒虹管现象，即分区的输出管路标高相近。此类情况在主、副楼同一屋顶水箱，下给水供水系统中很容易出现。发现这些问题，可以考虑把比例减压阀安装位置提高一个层面(不能提得太高，必须顾全分区内用水设备的承压规范要求)；也可在主、副楼内，分设两组独立的比例减压阀给水系统。

型号 DBEP

比例溢流阀，直动式

规格6

安装面按DIN 24340 A型和ISO 4401

系统限压阀

比例电磁铁操作

底板安装

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R900249522 LFA16DBEP-7X/

型号 DBET 和 DBETE

比例溢流阀，直动式

规格6

安装面按DIN 24340 A型和ISO 4401

系统限压阀

比例电磁铁操作

底板安装

用于DBETE型的集成电控器（OBE）

线性压力/指令值特性曲线

提供起螺丝插装阀

R910803236 PROP.MAGNET24V.SCHR.O.NOTHANDBETAET.

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R900959516 DBET-5X/200YG24N9K4M-1

R900959424 DBET-3X/50G24NK4-271

R900959324 DBET-5X/100G24NK4M-1

R900959153 DBET-5X/350YG24NK4M-1

R900957207 DBET-5X/50G24K4V

R900956010 DBET-5X/50G24NK4V

R900954706 DBETE-5X/350G24K31M

R900954438 DBETR-1X/30G24K4M

R900953316 DBETE-5X/200G24NK31M-1

R900952257 DBET-5X/350G24N9K4M

R900951964 DBET-5X/100YG24K4M-1

R900951869 DBET-5X/100G24K4M

R900951263 DBET-5X/315G24N9K4M

R900950428 DBET-5X/350G24NK4V

R900950145 DBETE-5X/100G24NK31M-1

R900949782 DBETE-5X/315YG24NK31M-1

R900947939 DBETE-5X/350G24K31V

R900947832 DBET-5X/315G24K4V

R900947736 DBET-5X/400YG24NK4M-14

R900946670 DBETE-5X/200G24K31M

R900946572 DBETE-5X/315G24NK31M

R900946114 DBET-5X/350G24K4M-1

R900941511 DBET-5X/400YG24N9K4M-8

R900940831 DBETE-5X/350G24NK31M-1

R900940209 DBET-5X/350G24NK4M-1

R900940131 DBET-5X/315G24NK4M-1

R900939742 DBET-5X/400YG24K4M-8

R900939741 DBET-5X/350YG24N9K4M-1

R900939696 DBET-5X/350YG24K4M-1

R900939222 DBET-5X/315G24K4V-1

R900936987 DBETE-5X/315G24K31M

R900935342 DBET-3X/315G24K4-152

R900931681 DBETE-5X/315G24K31M-20

R900929677 DBET-5X/200G12K4M-1

R900929676 DBET-5X/315G12K4M-1

R900925549 DBET-5X/100YG24NK4M-1

R900925344 DBET-5X/350G24K4M

R900925024 DBET-5X/315G24NK4M

R900924890 DBET-5X/100G24NK4V

R900923756 DBET-5X/50G24NK4M

R900923565 DBET-5X/200G24NK4M

R900923490 DBET-5X/350G24NK4M

R900922440 DBET-5X/400G24K4M-8

R900921742 DBETR-1X/350G24K4M-437

R900919362 DBET-5X/315YG24NK4M-1

R900919361 DBET-5X/315G24N9K4M-1

R900918284 DBETE-5X/200G24NK31M

R900917729 DBET-5X/200G24K4M-1

R900917194 DBET-5X/200G24N9K4M

R900916254 DBET-5X/100G24NK4M

R900916253 DBET-5X/200G24K4M

R900916252 DBET-5X/50G24K4M

R900913077 DBETE-5X/350G24K31M-1

R900912278 DBETR-1X/230G24K4M-677

R900906827 DBET-5X/315YG24NK4V-1

R900882173 KEGEL2,0-9,1X18DBETRE-20/315/350

R900767780 DBETRE-2X/30G24K31A1M

R900765153 DBET-5X/200G24K4V

R900755055 DBETE-5X/315G24K31V

R900746441 DBETRE-2X/350G24K31A1M

R900737318 VENTILSITZ2,06-11,07X12,9DBET-6X/200

R900736458 DBET-5X/100G24K4M-27

R900728287 DBET-5X/400YG24K4M-14

R900722059 DBETRE-2X=180G24K31A1M-1=DE

R900712726 DBETE-5X/100YG24NK31M-1

R900708194 DBETE-5X/200YG24NK31M-1

R900708065 DBET-5X/50YG24K4M-1

R900705259 DBET-5X/200G24K4V-22

R900391822 DBETR-1X/315G24K4M-437

R900373877 DBETR-1X/315G24K4V-409

R900372971 DBETR-1X/180G24K4M-437

R900370146 DBETR-1X/230G24K4M

R900357796 DBETR-1X/315G24K4M-409

R900357795 DBETR-1X/180G24K4M-409

R900353691 DBETR-1X/315G24K4M-381

R900352424 DBETR-1X/350G24K4M

R900348532 DBETB-1X/80G24K4M

R900348531 DBETB-1X/230G24K4M

R900336342 DBETR-1X/180G24K4V

R900334966 DBETR-1X/80G24K4M

R900332919 DBETR-1X/315G24K4V

R900969416 DBETRE-2X/180G24K31A1M

R900916252 DBET-5X/50G24K4M

R900313963 DICHTUNGSSATZDBETR-1X/

R900313899 DICHTUNGSSATZLFA63DBE/DBETR-6X/7X

R900313897 DICHTUNGSSATZLFA50DBE/DBETR-6X/7X

R900313767 DICHTUNGSSATZDBETR/DBETB-1X/V

R900313765 DICHTUNGSSATZDBEC6.-5X/DBET.-5X/V

R900313764 DICHTUNGSSATZDBEC6.-5X/DBET.-5X/

R900249079 DBET-3X/200G24K4

R900247337 DBETR-1X/350G24K4V-437

R900195093 SPINDELDBET-5X/150G24SO2

R900187193 VENTILSITZDBETR-1X/350

R900182529 SPINDELDBET-52/350

R901000848 DBET-6X/350G24K4V

R901000847 DBET-6X/315G24K4V

R901000846 DBET-6X/200G24K4V

R901000842 DBET-6X/50G24K4V

R900546617 DBET-5X/315G24K4M

R900370146 DBETR-1X/230G24K4M

R900334966 DBETR-1X/80G24K4M

0811402073 DBETBEX-1X/250G24K31A1M

0811402071 DBETBEX-1X/180G24K31A1M

0811402036 DBETX-1X/50G24-8NZ4M

0811402031 DBETX-1X/180G24-25NZ4M

0811402030 DBETX-1X/80G24-25NZ4M

0811402019 DBETX-1X/250G24-8NZ4M

0811402018 DBETX-1X/80G24-8NZ4M

0811402017 DBETX-1X/180G24-8NZ4M

0811402016 DBETX-1X/315G24-8NZ4M

0811402004 DBETBX-1X/315G24-37Z4M

0811402003 DBETBX-1X/180G24-37Z4M

0811402001 DBETBX-1X/250G24-37Z4M-38

型号 DBET

比例溢流阀，直动式，带位置反馈

规格6

安装面按ISO 4401

用于DBETBEX型的集成电位器（OBE）

比例电磁铁操作

通过电磁铁电枢位置进行调节

型号 KBPS

比例溢流阀，直动式（高性能）

规格8

先导阀

直动阀，用于限制系统压力

比例电磁铁操作

带中心螺纹和可拆卸线圈的比例电磁铁

起螺丝插装阀

在电控器上外部对指令值/压力特性曲线进行很好的平衡

如果遇到断电，可得到最小（"A"）或最大("B")压力

R901047007 KBPSP8AA/HCG24K4V

R961000376 DICHTUNGSSATZ KBPS.8.A/H..V

R961000144 DICHTUNGSSATZ KBPS.9AB/...V

R901145245 KBPSC8BA/HCG24K40V

R901131538 KBPSB8BA/HCG24K40V-8

R901112038 KBPSL8BA/HCG24K40V-8

R901092244 KBPSH8AA/HCG12K4V

R901075092 KBPSF8AA/HCG12K4V

R901073298 KBPSR8AA/HCG24C4V

R901069687 KBPSP8AA/HCG24C4V

R901068772 KBPSN8AA/HCG12K40V

R901067074 PLATTE M4-12-10/KBPS_A/SV01+M4-15-20*PG

R901066847 KBPSC8AA/HCG12C4V

R901066358 KBPSC8AA/HCG12K4V

R901065356 KBPSC8BA/HCG12C4V-2

R901064382 KBPSL8BA/HCG24K40V

R901064003 KBPSC8BA/HCG12C4V

R901053647 KBPSP8AA/HCG24K4V-8

R901053398 KBPSL8AA/HCG24K4V-8

R901049877 KBPSN8AA/HCG24K4V

R901049868 KBPSH8AA/HCG24K4V

R901049865 KBPST8AA/HCG24K4V

R901049860 KBPSR8AA/HCG24K4V

R901049817 KBPSF8AA/HCG24K4V

R901049804 KBPSC8AA/HCG24K4V

R901049738 KBPSL8BA/HCG12K4V

R901049691 KBPSH8BA/HCG24K4V

R901048791 KBPSP8AA/HCG12C4V

R901047007 KBPSP8AA/HCG24K4V

R901045871 KBPST8AA/HCG24K40V

R901036378 KBPSN8BA/HCG24K40V-2

R901036375 KBPSN8BA/HCG24C4-210V

R901027410 KBPSL8AA/HCG24C4V

R901027408 KBPSL8AA/HCG24K4V

R901026207 KBPSP8BA/HCG24K40V

R901018607 KBPSR8BA/HCG24C4V

R901018605 KBPSP8BA/HCG24C4V

R901018602 KBPSL8BA/HCG24C4V

R901018598 KBPST8BA/HCG24K4V

R901018597 KBPSR8BA/HCG24K4V

R901018593 KBPSP8BA/HCG24K4V

R901018592 KBPSN8BA/HCG24K4V

R901018588 KBPSL8BA/HCG24K4V

R901018587 KBPSF8BA/HCG24K4V

R901018586 KBPSC8BA/HCG24K4V

R901016229 KBPSN8BA/HCG24K40V

R901007426 KBPST8BA/HCG24K40V

博世Bosch Rexroth力士乐上海优势供应阀系列产品如下：

力士乐Rexroth电磁阀，力士乐Rexroth比例阀，力士乐Rexroth溢流阀，力士乐Rexroth调节阀，力士乐Rexroth液压阀，Rexroth solenoid valve ,力士乐换向阀，博世电磁阀，Bosch电磁阀，Bosch液压阀，Bosch气动阀，Bosch Rexroth液压元件，力士乐Rexroth节流阀，Bosch Rexroth力士乐截止阀，Bosch博世 Rexroth单向阀，Bosch Rexroth流量阀，Bosch Rexroth比例溢流阀，博世力士乐换向阀，Bosch博世力士乐Rexroth压力阀，Bosch博世Rexroth力士乐比例阀，比例阀, Bosch博世Rexroth力士乐高频响阀和伺服阀，Bosch博世Rexroth力士乐先导式比例方向阀，Bosch博世Rexroth力士乐直动式比例方向阀，力士乐比例流量控制阀，博世力士乐高频响方式阀，博世力士乐伺服阀，力士乐Rexroth比例减压阀,Bosch博世Rexroth力士电子元件,力士乐Bosch Rexroth开关阀，力士乐Bosch Rexroth方向滑阀，力士乐Bosch减压阀，力士乐Bosch Rexroth方流量控制阀，力士乐Bosch Rexroth方截止阀-梭阀，力士乐Bosch Rexroth压力截止阀，力士乐Rexroth插装阀，力士乐Rexroth压力截止阀，力士乐Rexroth控制阀块。

博世Bosch Rexroth力士乐上海优势供应泵系列产品如下

博世力士乐Rexroth轴向柱塞泵，博世力士乐Rexroth径向柱塞泵，博世力士乐Rexroth联泵，博世力士乐Rexroth内啮合齿轮泵，力士乐Rexroth外啮合齿轮泵，博世Bosch Rexroth力士乐叶片泵，博世Bosch Rexroth力士乐变量泵，博世Bosch Rexroth力士乐定量泵

德国博世Bosch力士乐Rexroth工业传动液压件现货特价供应

Bosch博世力士乐Rexroth德国产原装现货型号特价供应

上海液压元件销售总代理

专业代理销售德国博世力士乐Bosch Rexroth液压气动元件 、德国博世力士乐Bosch Rexroth电磁换向阀液压气动元件、德国博世力士乐Bosch Rexroth轴向柱塞泵液压气动元件、德国博世力士乐Bosch Rexroth齿轮泵液压气动元件、德国博世力士乐Bosch Rexroth叶片泵液压气动元件、德国博世力士乐Bosch Rexroth溢流阀、德国博世力士乐Bosch Rexroth节流阀、德国博世力士乐Bosch Rexroth压力开关、德国博世力士乐Bosch Rexroth安全阀液压气动元件、德国博世力士乐Bosch Rexroth插装阀液压气动元件、德国博世力士乐Bosch Rexroth充液阀液压气动元件、德国博世力士乐Bosch Rexroth单向阀液压气动元件、德国博世力士乐Bosch Rexroth方向阀液压气动元件、德国博世力士乐Bosch Rexroth盖板液压气动元件、德国博世力士乐Bosch Rexroth减压阀液压气动元件、德国博世力士乐Bosch Rexroth节流阀液压气动元件、德国博世力士乐Bosch Rexroth截止阀液压气动元件、德国博世力士乐Bosch Rexroth冷却器液压气动元件、德国博世力士乐Bosch Rexroth流量阀液压气动元件、德国博世力士乐Bosch Rexroth升降阀液压气动元件、德国博世力士乐Bosch Rexroth顺序阀液压气动元件等。