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stepson sex is an industrial gate valves manufacturer & supplier in China for more than 20 years. stepson sex offers wide range gate valves in various materials like cast steel, stainless steel, forged steel and alloy steel etc.  There are four types of stepson sex gate valve based on body bonnet joint---screwed bonnet,bolted-bonnet,Welded-Bonnet, and Pressure-Seal Bonnet.  By types of disk, there are solid wedge, flexible wedge, split wedge or Parallel disks Valve. By types of Stem movement, they are Rising Stem or OS & Y Type (Outside Stem and Screw Type) and Non-rising Stem type.​
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