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Gate valve

  • US 9,091,351 B2
  • Filed: 02/07/2013
  • Issued: 07/28/2015
  • Est. Priority Date: 02/07/2013
  • Status: Active Grant
First Claim
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1. A gate valve system comprising:

  • a valve body having a bore to allow fluid to pass through the valve body, the valve body further having a cavity defined by substantially parallel valve body innerside walls;

    a gate operationally disposed within the cavity, wherein the gate has a passage to allow fluid to pass, wherein at least one end of the gate is defined by a radius perimeter;

    a bonnet removably coupled to a face of the valve body and comprising a connecting end, wherein a portion of an innerside of the bonnet includes a curved surface adapted to mate with the at least one end of the gate defined by the radius perimeter;

    a first valve stem connected to an upper portion of the gate and a second valve stem connected to a lower portion of the gate; and

    an actuation mechanism operationally positioned and removably connected to the gate by way of a thru-hole in the bonnet, whereby the actuation mechanism effectuates sufficient translational movement of the gate to substantially permit or to substantially impede fluid flow within the system, and the actuation mechanism comprises a ball-screw drive assembly or a hydraulic stem engaged with the first valve stem, and a bearing cap threadedly engaged with the connecting end of the bonnet for removably connecting the actuation mechanism to the connecting end of the bonnet,wherein the actuation mechanism is configured to be removed and replaced by an operationally different actuation mechanism by detaching the ball-screw drive assembly or the hydraulic stem from the first valve stem, detaching the bearing cap from the connecting end of the bonnet, and attaching the first valve stem to the operationally different actuation mechanism.

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