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  1. jameslander

    Metal seated ball valve with tungsten carbide coating - lapping procedure

    Hi, we would recommend: 1. Lap on machine to generate roundness – Could use Diamond or Boron Carbide for this stage 2. Use the ball seat and face the seat with ASFL polishing pad material and use a combination of 3µ diamond compound and a 3µ diamond slurry to polish the ball. 3. Blue check seat...

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