To the front entrance door slammed I equipped them with shock Bicycle pump. Now they close almost silently. The pump is mounted pivotally in brackets. mounted on the door and the doorframe. One swivel axis passes through the M6 screws, screwed into the outlet hole for the pump hose, the second through a steel rod with a diameter of 10 mm, inserted epoxy into the hole in the stock pump (handle removed it). The door closes smoothly because the air from the pump is discharged slowly through the cuff of the stock. Adjustment is made by changing the attachment bracket on the door. A. KUZNETSOV, Saint-Petersburg
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