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difference between internal valve and external valve hydraulic hammers

Discussion in 'Construction Equipment Attachments' started by zppark, Apr 25, 2019.

  1. zppark

    zppark Member

    Jan 4, 2019
    As hydraulic hammers' design updating these years, it seems internal valve types are becoming the main current. Only several brands like Furukawa still insist on the external valve.

    Does this mean a trend in the future?

    As I collect materials on google I found very little information about that. Then coming up with this article below.


    Hope to receive some useful information here.