派克华南区总经销，派克RM系列先导式溢流阀是一种叠加元件，它被用于和带有标准化连接孔的换向阀进行叠加式连接。视功能用途而定，对于一些阀来讲可选择P、A、或B口作为压力控制，但总是由T将油液卸荷至油箱。
派克Manapak RM系列阀为钢质阀体。压力调节可选择采用有槽螺钉、旋钮或带所的旋钮来进行调整。阀体上测压口的系堵拆下后可用作压力测量。先导控制的原理使得P/Q-特性曲线平滑变化，其基本只受与Q相关的流动阻力的影响。通过补偿阀芯上的阻尼孔限制先导控制油的流量。
派克RM系列先导式溢流阀部分型号供应如下：
RM2AT07LV RM2AT07LV20 RM2AT07SV RM2AT07SV20 RM2AT17KV RM2AT17KV20
RM2AT17LV RM2AT17LV20 RM2AT17SV RM2AT17SV20 RM2AT25KV RM2AT25KV20
RM2AT25LV RM2AT25LV20 RM2AT25SV RM2AT25SV20 RM2AT35KV RM2AT35KV20
RM2AT35SV RM2AT35SV20 RM2ATBT35SHT RM2ATBT35SHT RM2BT07KV RM2BT07KV20
RM2BT07LV RM2BT07LV20 RM2BT07SV RM2BT07SV20 RM2BT17KV RM2BT17KV20
RM2BT17LV RM2BT17LV20 RM2BT17SV RM2BT17SV20 RM2BT25KV RM2BT25KV20
RM2BT25LV RM2BT25LV20 RM2BT25SV RM2BT25SV20 RM2BT35KV RM2BT35KV20
RM2BT35SV RM2BT35SV20 RM2CC07SVHT RM2CC07SVHT RM2CC21SHT RM2CC21SHT
RM2CC21SVHT RM2CC21SVHT RM2CC32SHT RM2CC32SHT RM2CC32SVHT RM2CC32SVHT
RM3AT07SVHT RM3AT07SVHT RM3AT21KVHT RM3AT21KVHT RM3AT21SHT RM3AT21SHT
RM3AT21SVHT RM3AT21SVHT RM3AT35KVHT RM3AT35KVHT RM3AT35LVHT RM3AT35LVHT
RM3AT35SVHT RM3AT35SVHT RM3BT07KV RM3BT07KV11 RM3BT07LV RM3BT07LV11
RM3BT07SV RM3BT07SV11 RM3BT17KV RM3BT17KV11 RM3BT17SV RM3BT17SV11
RM3BT25KV RM3BT25KV11 RM3BT25SV RM3BT25SV11 RM3BT35KV RM3BT35KV11
RM3BT35SV RM3BT35SV11 RM3CC21SHT RM3CC21SHT RM3CC35SHT RM3CC35SHT
RM3PT07KV RM3PT07KV11 RM3PT07LV RM3PT07LV11 RM3PT07SV RM3PT07SV11
RM3PT17KV RM3PT17KV11 RM3PT17LV RM3PT17LV11 RM3PT17SV RM3PT17SV11
RM3PT25KV RM3PT25KV11 RM3PT25LV RM3PT25LV11 RM3PT25SV RM3PT25SV11
RM3PT35KV RM3PT35KV11 RM3PT35LV RM3PT35LV11 RM3PT35SV RM3PT35SV11
RM4PT07SVHT RM4PT07SVHT RM4PT25KVHT RM4PT25KVHT RM6PT07SV RM6PT07SV30
RM4PT25SVHT RM4PT25SVHT RM4PT35KVHT RM4PT35KVHT RM6PT17SV RM6PT17SV30
RM4PT35SVHT RM4PT35SVHT RM6PT25SV RM6PT25SV30 RM6PT35SV RM6PT35SV30
Parker先导式溢流阀，Parker比例溢流阀，派克RM系列先导式溢流阀的主要技术参数：
美国PARKER派克先导型溢流阀的导阀部分结构尺寸较小，调压弹簧不必很强，因此压力调整比较轻便。但因先导型溢流阀要在先导阀和主阀都动作后才能起控制作用，因此反应不如直动型溢流阀灵敏。Parker先导式溢流阀，Parker比例溢流阀，派克RM系列先导式溢流阀，Parker溢流阀
