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  • The Importance of Lockable Bike Racks in Urban Spaces


  • 4. Lapping The actual lapping is performed using a lapping plate and an appropriate abrasive compound. The valve seat (the fixed part of the valve) and the gate (the movable part) are often lapped together to ensure they match perfectly. The operator applies the compound and works the gate against the seat in a circular motion, gradually wearing down any high spots and achieving a smooth, flat surface.


  • 3. Exercise the Valve Periodically opening and closing the valve helps to prevent the gate from becoming stuck due to sediment buildup or corrosion.


  • Even the smallest things play a vital role in the grand symphony of urban life.