Monthly Archives: August 2013

• Knowledge for valve parts 002

  Posted on August 12, 2013 by admin in Product News

  Chapter C: Valve stem

  The valve stem bearing the tensile, compressive and torsional forces while the valve opening and closing. The valve stem could contact with media directly, and could also have relevant friction movement against valve packing. So, the material used for valve stem has to be sufficient strength and toughness under certain required temperature. And also has to be anti-corrosion, scratch resistance, and good manufacturability.

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• Knowledge for Valve parts-001

  Posted on August 6, 2013 by admin in Product News

  There are a lot of valve parts in different materials to be used for valves, API valves, ANSI Valves, petroleum valves, including various grades of ferrous and nonferrous metals and alloys, a variety of non-metallic materials. Basically, the material selection principle is based on follows

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