Control valve flow adjustment device
AssigneeFisher Controls International LLC
InventorsRandy J. Hall, Ronald C. Burr, Mark D. Stiehl, Brian J. Burlage, Carter B. Cartwright
Life of this patent
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Abstract
A valve includes a fluid inlet passage having a fluid inlet, a fluid outlet passage, an orifice between the fluid inlet passage and the fluid outlet, and a moveable valve plug adapted to move with respect to the orifice to vary the flow of fluid between the fluid inlet passage and the fluid outlet passage. A movable valve stem is attached to the valve plug and a travel limiting device is attached to the valve stem. The travel limiting device permits the valve to be placed in one of a plurality of desired flow configurations.
Claims22
A valve, comprising:
- a housing containing a fluid inlet passage and a fluid outlet passage;
- an orifice disposed between the fluid inlet passage and the fluid outlet passage;
- a movable valve plug adapted to move with respect to the orifice to vary the flow of fluid between the fluid inlet passage and the fluid outlet passage;
- a movable valve stem attached to the valve plug, the moveable valve stem including a plurality of serrations disposed thereon and an integral travel limiting device for adjusting a valve travel limit wherein adjustments to a valve travel limit can be made outside the housing such that the adjustments upon the serrations provide a plurality of predefined positions that correspond to a predetermined maximum flow capacity of the valve.
A valve, comprising:
- a housing containing a fluid inlet passage and a fluid outlet passage;
- an orifice disposed between the fluid inlet passage and the fluid outlet passage;
- a movable valve plug adapted to move with respect to the orifice to vary the flow of fluid between the fluid inlet passage and the fluid outlet passage;
- a movable valve stem attached to the valve plug, the moveable valve stem including a plurality of serrations disposed thereon and an integral travel limiting device for adjusting a valve travel limit wherein adjustments to a valve travel limit can be made outside the housing;
- the integral travel limiting device further including serrations shaped and sized to mate with the moveable valve stem serrations such that the adjustments to the valve travel limit correspond to a maximum flow capacity of the valve.
A valve, comprising:
- a housing containing a fluid inlet passage and a fluid outlet passage;
- an orifice disposed between the fluid inlet passage and the fluid outlet passage;
- a movable valve plug adapted to move with respect to the orifice to vary the flow of fluid between the fluid inlet passage and the fluid outlet passage;
- a movable valve stem attached to the valve plug, the moveable valve stem including a plurality of serrations disposed thereon and an integral travel limiting device for adjusting a valve travel limit wherein adjustments to a valve travel limit can be made outside the housing, the travel limiting device further including a collar threadably attached to the moveable valve stem such that the adjustments to the valve travel limit correspond to a maximum flow capacity of the valve.
Dependencies are inferred from the claim text.