FM2DDSV55派克节流阀大量现货
经营产品：
阀类：电磁阀、换向阀、单向阀、溢流阀、减压阀、平衡
阀、插装阀、比例阀等
泵类：齿轮泵、柱塞泵、叶片泵等
承诺：保证原装*，假一赔十 量大价格好商量！！
武穴黎翔机电设备有限公司PARKER派克销售部
询价：陈
广泛应用于钢铁、冶金、铝行业、石油化工、航天、船舶制造、煤炭、水泥、电力、汽车、工程机械、食品、药业、林业、纺织、皮革、造纸等行业领域
溢流阀是一种液压压力控制阀。在液压设备中主要起定压溢流作用，稳压，系统卸荷和安全保护作用。 定压溢流作用：在定量泵节流调节系统中，定量泵提供的是恒定流量。当系统压力增大时，会使流量需求减小。此时溢流阀开启，使多余流量溢回油箱，保证溢流阀进口压力，即泵出口压力恒定（阀口常随压力波动开启）。
稳压作用：溢流阀串联在回油路上，溢流阀产生背压运动部件平稳性增加。
系统卸荷作用：在溢流阀的遥控口串接溢小流量的电磁阀，当电磁铁通电时，溢流阀的遥控口通油箱，此时液压泵卸荷。溢流阀此时作为卸荷阀使用。
安全保护作用：系统正常工作时，阀门关闭。只有负载超过规定的极限（系统压力超过调定压力）时开启溢流，进行过载保护，使系统压力不再增加（通常使溢流阀的调定压力比系统zui高工作压力高10%～20%）。
实际应用中一般有：作卸荷阀用，作远程调压阀，作高低压多级控制阀，作顺序阀，用于产生背压（串在回油路上）。
溢流阀一般有两种结构：1、直动型溢流阀 。2、先导型溢流阀。
对溢流阀的主要要求：调压范围大，调压偏差小，压力振摆小，动作灵敏，过载能力大，噪声小。
CPOM2AAHT CPOM2AAHT
CPOM2AAV CPOM2AAV56
CPOM2BBHT CPOM2BBHT
CPOM2BBV CPOM2BBV56
CPOM2BB25V CPOM2BB25V56
CPOM2DDHT CPOM2DDHT
CPOM2DDHTV CPOM2DDHTV
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CPOM3AAHT CPOM3AAHT
CPOM3AAV CPOM3AAV50
CPOM3BBHT CPOM3BBHT
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CPOM3DDHT CPOM3DDHT
CPOM3DDHTV CPOM3DDHTV
CPOM3DDV CPOM3DDV50
CPOM6AAV CPOM6AAV31
CPOM6BBV CPOM6BBV31
CPOM6DDV CPOM6DDV31
GFG2PKC1.0V-10X GFG2PKC1.0V-10X
FM2DDDKV FM2DDDKV55
FM2DDDSV FM2DDDSV55
FM2DDKV FM2DDKV55
FM2DDSV FM2DDSV55
FM3DDDKV FM3DDDKV51
FM3DDDSV FM3DDDSV51
FM3DDKV FM3DDKV51
FM3DDSV FM3DDSV51 单向节流阀尺寸原理特点介绍
节流阀是通过改变节流截面或节流长度以控制流体流量的阀门。将节流阀和单向阀并联则可组合成单向节流阀。节流阀和单向节流阀是简易的流量控制阀，在定量泵液压系统中，节流阀和溢流阀配合，可组成三种节流调速系统，即进油路节流调速系统、回油路节流调速系统和旁路节流调速系统。节流阀没有流量负反馈功能，不能补偿由负载变化所造成的速度不稳定，一般仅用于负载变化不大或对速度稳定性要求不高的场合。
对节流阀的性能要求是：
·流量调节范围大，流量一压差变化平滑；
·内泄漏量小，若有外泄漏油口，外泄漏量也要小；
·调节力矩小，动作灵敏。
节流阀（throttle valve）的外形结构与截止阀并无区别，只是它们启闭件的形状有所不同。节流阀的启闭件大多为圆锥流线型，通过它改变通道截面积而达到调节流量和压力。节流阀供在压力降*的情况下作降低介质压力之用。
介质在节流阀瓣和阀座之间流速很大，以致使这些零件表面很快损坏-即所谓汽蚀现象。为了尽量减少汽蚀影响，阀瓣采用耐汽蚀材料（合金钢制造）并制成角为140~180的流线型圆锥体，这还能使阀瓣能有较大的开启高度，一般不*在小缝隙下节流。
REXROTH单向节流阀尺寸原理特点介绍节流阀具有以下特点：
1、构造较简单，便于制造和维修，成本低。
2、调节精度不高，不能作调节使用。
3、密封面易冲蚀，不能作切断介质用。
4、密封性较差。
节流阀按通道方式可分为直通式和角式两种；按启闭件的形状分，有针形、沟形和窗形三种。节流阀的安装与维护应注意以下事项：
该阀经常需要操作，因此应安装在易于方面便操作的位置上。
安装时要注意介质方向与阀体所标箭头方向保持*。
节流口堵塞原因：
1、油液中的机械杂质或因氧化析出的胶质、沥青、碳渣等污物堆积在节流缝隙处。
2、由于油液老化或受到挤压后产生带电的极化分子，而节流缝隙的金属表面上存在电位差，故极化分子被吸附到缝隙表面，形成牢固的边界吸附层，吸附层厚度一般为5~8微米，因而影响了节流缝隙的大小。以上堆积、吸附物增长到一定厚度时，会被液流冲刷掉，随后又重新附在阀口上。这样周而复始，就形成了流量的脉动。
3、阀口压差较大时，因阀口温度高，液体受挤压的程度增强，金属表面也更易受摩擦作用而形成电位差，因此压差大时容易产生堵塞现象。
减轻节流口堵塞的措施：
1、选择水力半径大的薄刃节流口。
2、精密过滤并定期更换油液。
3、适当减小节流口前后的压差。
4、采用电位差较小的金属材料、选用抗氧化稳定性好的油液、减小节流口表面粗糙度。D3DW101BNJW40C08
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