HDR DIRECT OPERATED PRESSURE RELIEF VALVES

Short Description:

HDR Series relief valves, with remote control port, are direct operated poppet type used to limit pressure in a hydraulic system. It has characteristics of compact structure, high performance, reliable work, low noise, and long service life. These series are widely applied to many lower flow systems.

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Technical data

Model	HDR-1/4-25	HDR-3/8-50	HDR-1/2-80	HDR-3/4-120	HDR-1-220
Max Flow rate（L/min）	25	50	80	120	220
Max operating pressure（MPa）	31.5
Valve body（Material）Surface treatment	（Steel body）Surface clear zinc plating
Oil cleanliness	NAS1638 class 9 and ISO4406 class 20/18/15