派克PRDM系列直动式减压阀的功能：该阀为常开元件，在设定值以下它允许油液自由地流过控制流道。当下游流道中压力升高至预调节的压力时，阀芯向阀体的方向移动，以减少来自主系统的流量，缓冲柱塞将自行调整，以维持预定的支路系统压力。当支路系统压力由于外力作用升高时，缓冲柱塞将克服弹簧力移动并且使大量的油液流回油箱，使压力不再继续升高。泄漏通过弹簧流回油箱。
派克PRDM系列直动式减压阀的特性：PRDM叠加阀具有“P”口“A”口或“B”口三种减压结构可供选用；直动式缓冲柱塞结构具有反应快，泄流量少，磁补小的特点；zui大设定压力有四种可能：25,70,160,及210bar（363,1015,2320,3045PSI）；可选项包括两种调节方式和五种测压口规格。
派克PRDM系列直动式减压阀的部分型号供应如下：
PRDM2AA02KVG PRDM2AA02KVG PRDM2AA02LVG PRDM2AA02LVG15 PRDM2AA02LVM PRDM2AA02LVM15 PRDM2AA02SVG PRDM2AA02SVG15 PRDM2AA02SVGX797 PRDM2AA02SVG15X797 PRDM2AA02SVM PRDM2AA02SVM15 PRDM2AA06KVC PRDM2AA06KVC15 PRDM2AA06KVG PRDM2AA06KVG15 PRDM2AA06LVG PRDM2AA06LVG15 PRDM2AA06LVGX797 PRDM2AA06LVG15X797 PRDM2AA06LVM PRDM2AA06LVM15 PRDM2AA06SVG PRDM2AA06SVG15 PRDM2AA06SVGX797 PRDM2AA06SVG15X797 PRDM2AA06SVM PRDM2AA06SVM15 PRDM2AA16KVG PRDM2AA16KVG15 PRDM2AA16KVS PRDM2AA16KVS15 PRDM2AA16LVG PRDM2AA16LVG15 PRDM2AA16SVG PRDM2AA16SVG15 PRDM2AA16SVGX797 PRDM2AA16SVG15X797 PRDM2AA16SVM PRDM2AA16SVM15 PRDM2AA16SVS P RDM2AA16SVS15 PRDM2AA21KVG PRDM2AA21KVG15 PRDM2AA21LVG PRDM2AA21LVG15 PRDM2AA21SVC PRDM2AA21SVC15 PRDM2AA21SVG PRDM2AA21SVG15 PRDM2AA21SVGX797 PRDM2AA21SVG15X797 PRDM2AA35KVG PRDM2AA35KVG15 PRDM2AA35SVG PRDM2BB02KVC15 PRDM2BB02LVG PRDM2BB02LVG15 PRDM2BB02LVM PRDM2BB02LVM15 PRDM2BB02SVG PRDM2BB02SVG15 PRDM2BB06KVG PRDM2BB06KVG15 PRDM2BB06KVS PRDM2BB06KVS15 PRDM2BB06LVG PRDM2BB06LVG15 PRDM2BB06LVM PRDM2BB06LVM15 PRDM2BB06SVG PRDM2BB06SVG15 PRDM2BB06SVGX797 PRDM2BB06SVG15X797 PRDM2BB06SVM PRDM2BB06SVM15 PRDM2BB16KVG PRDM2BB16KVG15 PRDM2BB16LVG PRDM2BB16LVG15 PRDM2BB16LVGX797 PRDM2BB16LVG15X797 PRDM2BB16LVM PRDM2BB16LVM15 PRDM2BB16SVC PRDM2BB16SVC15 PRDM2BB16SVG PRDM2BB16SVG15 PRDM2BB16SVGX797 PRDM2BB16SVG15X797 PRDM2BB16SVGX825 DRZB-6S-160/2 PRDM2BB16SVM PRDM2BB16SVM15 PRDM2BB21KVG PRDM2BB21KVG15 PRDM2BB21LVG PRDM2BB21LVG15 PRDM2BB21SVC PRDM2BB21SVC15 PRDM2BB21SVG PRDM2BB21SVG15 PRDM2AA35SVG15 PRDM2BB02KVC PRDM2BB21SVGX797 PRDM2BB21SVG15X797 PRDM2BB35KVC PRDM2BB35KVC15 PRDM2BB35KVG PRDM2BB35KVG15 PRDM2BB35SVG PRDM2BB35SVG15 PRDM2PP02KVG PRDM2PP02KVG15 PRDM2PP02KVM PRDM2PP02KVM15 PRDM2PP02LVG PRDM2PP02LVG15 PRDM2PP02LVM PRDM2PP02LVM15 PRDM2PP02SVC PRDM2PP02SVC15 PRDM2PP02SVG PRDM2PP02SVG15 PRDM2PP02SVM PRDM2PP02SVM15 PRDM2PP02SVS PRDM2PP02SVS15 PRDM2PP06KVC PRDM2PP06KVC15 PRDM2PP06KVG PRDM2PP06KVG15 PRDM2PP06KVS PRDM2PP06KVS15 PRDM2PP06LVC PRDM2PP06LVC15 PRDM2PP06LVG PRDM2PP06LVG15 PRDM2PP06LVGX797 PRDM2PP06LVG15X797 PRDM2PP06LVM PRDM2PP06LVM15 PRDM2PP06SVC PRDM2PP06SVC15 PRDM2PP06SVG PRDM2PP06SVG15 PRDM2PP06SVGX797 PRDM2PP06SVG15X797 PRDM2PP06SVM PRDM2PP06SVM15 PRDM2PP06SVS PRDM2PP06SVS15 PRDM2PP16KVG PRDM2PP16KVG15 PRDM2PP16KVS PRDM2PP16KVS15 PRDM2PP16LVC PRDM2PP16LVC15 PRDM2PP16LVG PRDM2PP16LVG15 PRDM2PP16LVGX797 PRDM2PP16LVG15X797 PRDM2PP16LVM PRDM2PP16LVM15 PRDM2PP16SVC PRDM2PP16SVC15 PRDM2PP16SVG PRDM2PP16SVG15 PRDM2PP16SVGX738 PRDM2PP16SVG15X738 PRDM2PP16SVGX797 PRDM2PP16SVG15X797
PRDM2PP16SVGX862 PRDM2PP16SVG15X862 PRDM2PP16SVM PRDM2PP16SVM15
PRDM2PP16SVS PRDM2PP16SVS15 PRDM2PP21KVG PRDM2PP21KVG15
PRDM2PP21KVGX797 PRDM2PP21KVG15X797 PRDM2PP21KVM PRDM2PP21KVM15
PRDM2PP21KVS PRDM2PP21KVS15 PRDM2PP21LVG PRDM2PP21LVG15
PRDM2PP21SVC PRDM2PP21SVC15 PRDM2PP21SVG PRDM2PP21SVG15
PRDM2PP21SVGX797 PRDM2PP21SVG15X797 PRDM2PP21SVGX825 DRZP-6S-210/2
PRDM2PP21SVGX862 PRDM2PP21SVG15X862 PRDM2PP21SVM PRDM2PP21SVM15
PRDM2PP35KVG PRDM2PP35KVG15 PRDM2PP35LVG PRDM2PP35LVG15
PRDM2PP35SVG PRDM2PP35SVG15 PRDM2PP35SVGX797 PRDM2PP35SVG15X797
PRDM2PX02SVG PRDM2PX02SVG15 PRDM2PX06SVG PRDM2PX06SVG15
PRDM2PX16SVG PRDM2PX16SVG15 PRDM3AA01LVG PRDM3AA01LVG15
PRDM3AA01SVG PRDM3AA01SVG15 PRDM3AA05LVG PRDM3AA05LVG15
PRDM3AA05SVG PRDM3AA05SVG15 PRDM3AA10LVG PRDM3AA10LVG15
PRDM3AA10SVG PRDM3AA10SVG15 PRDM3AA10SVGXG136 PRDM3AA10SVG15XG136
PRDM3AA15LVG PRDM3AA15LVG15 PRDM3AA15SVG PRDM3AA15SVG15
PRDM3AA15SVGXG136 PRDM3AA15SVG15XG136 PRDM3AA21LVG PRDM3AA21LVG15
PRDM3AA21SVC PRDM3AA21SVC15 PRDM3AA21SVG PRDM3AA21SVG15
PRDM3AA21SVGXG136 PRDM3AA21SVG15XG136 PRDM3BB01LVG PRDM3BB01LVG15
PRDM3BB01SVG PRDM3BB01SVG15 PRDM3BB05LVG PRDM3BB05LVG15
PARKER减压阀，PARKER直动式减压阀，派克PRDM系列直动式减压阀
PARKER减压阀，PARKER直动式减压阀，派克PRDM系列直动式减压阀
PRDM3BB05SVG PRDM3BB05SVG15
PRDM3BB10LVG PRDM3BB10LVG15
PRDM3BB10SVG PRDM3BB10SVG15
PRDM3BB10SVM PRDM3BB10SVM15
PRDM3BB15LVG PRDM3BB15LVG15
PRDM3BB15SVG PRDM3BB15SVG15
PRDM3BB15SVGXG136 PRDM3BB15SVG15XG136
PRDM3BB21LVG PRDM3BB21LVG15
PRDM3BB21SVG PRDM3BB21SVG15
PRDM3BB21SVGXG136 PRDM3BB21SVG15XG136
PRDM3BB21SVM PRDM3BB21SVM15
PRDM3PP01LVG PRDM3PP01LVG15
PRDM3PP01SVG PRDM3PP01SVG15
PRDM3PP05LVG PRDM3PP05LVG15
PRDM3PP05SVC PRDM3PP05SVC15
PRDM3PP05SVG PRDM3PP05SVG15
PRDM3PP05SVGXG136 PRDM3PP05SVG15XG136
PRDM3PP10LVG PRDM3PP10LVG15
PRDM3PP10LVM PRDM3PP10LVM15
PRDM3PP10SVG PRDM3PP10SVG15
PRDM3PP10SVGX825 DRZP-10S-100
PRDM3PP10SVGXG136 PRDM3PP10SVG15XG136
PRDM3PP15LVG PRDM3PP15LVG15
PRDM3PP15SVC PRDM3PP15SVC15
PRDM3PP15SVG PRDM3PP15SVG15
PRDM3PP15SVGXG136 PRDM3PP15SVG15XG136
PRDM3PP21LVG PRDM3PP21LVG15
PRDM3PP21SVG PRDM3PP21SVG15
PRDM3PP21SVGXG136 PRDM3PP21SVG15XG136
美国PARKER派克PRDM系列元件为直动式减压阀。主要用于将液压系统中的某一支路压力调节到系统公称压力以下的某一预定值。此外，还将该支路的溢流功能集于一体。压力表接口或测量接口直接在元件上，以便控制支路压力。
派克PRDM系列减压阀为常开元件，在设定值以下它允许油液自由地流过控制流道。当下游流道中压力升高至预调节的压力时，阀芯向关闭的方向移动，以减少来自主系统的流量，缓冲柱塞将自行调整，以维持预定的支路系统压力。当支路系统压力由于外力作用升高时，缓冲柱塞将克服弹簧力移动并且使大量的油液流回油箱，使压力不再继续升高。泄漏油通过弹簧腔流回油箱。Parker减压阀，Parker直动式减压阀，派克PRDM系列直动式减压阀，Parker比例减压阀
