DF4-W反聯鎖閥是控制壓力機制動器、離合器正常工作的一種專用氣動元件。它保證離合器與制動器必須保持一定的結合和脫霸載順序號，即在壓力機起動時，制動器必須首先脫開0.03秒。然合離合才能結合∶在壓力機停車時，離合器必須首先脫開0.01秒，然后制動器動作。該閥反應靈敏、動作可靠。?DF4-W reverse locked solenoid valve is exclusive pneumatic elements controlling the actions of the brake and cluth of a press. It ensure that cluth and brake maintain a certain procedure of gear-in and release,i.e,when press starts the brake shall first release for 0.03 sec before clutch gear-in; and when the press stops, the clutch shall first release for 0.01 sec before brake active.
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