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Butterfly valves having multiple seals

A technology for sealing parts and sealing parts, which is used in the direction of lift valves, valve devices, engine components, etc.

Inactive Publication Date: 2014-07-23
FISHER CONTROLS INT LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, after prolonged use, the disc may dislodge or move beyond a preferred amount in the valve body due to wear of the valve components.

Method used

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  • Butterfly valves having multiple seals
  • Butterfly valves having multiple seals
  • Butterfly valves having multiple seals

Examples

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Embodiment Construction

[0015] Certain embodiments are shown in the above figures and described in detail below. In describing these embodiments, similar or identical reference numerals are used to designate similar or identical elements. The drawings are not necessarily to scale, and certain features and certain views of the drawings may be shown exaggerated in scale or schematically for clarity and / or conciseness. Additionally, several embodiments are described in this specification. Any feature from any one embodiment may be included in, substituted for, or combined with other features from other embodiments.

[0016] Figure 1A A known butterfly valve 10 is shown in . The butterfly valve 10 may be, for example, a division of Emerson Process Controls, Inc. of St. Louis, Missouri. Manufactured 8580 valve, which includes a single polytetrafluoroethylene (PTFE) sealing ring 20 , valve disc 30 and valve shafts 40 , 42 . The valve shafts 40 , 42 are connected to the rear side of the valve disc 30 ...

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PUM

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Abstract

Butterfly valves having multiple seals are described herein. An example butterfly valve includes a body defining a passageway between an inlet and an outlet. The example butterfly valve includes a first flexible seal coupled to a first surface of the body adjacent the inlet to engage a first portion of a disk. The example butterfly valve also includes a second flexible seal coupled to a second surface of the body adjacent to the outlet to engage a second portion of the disk different than the first portion.

Description

technical field [0001] The present disclosure relates generally to a butterfly valve, and more particularly, to a butterfly valve having multiple seals. Background technique [0002] Control valves (eg, sliding stem valves, rotary valves, axial flow valves, ball valves, etc.) are commonly used in industrial processes, such as oil and gas pipeline distribution systems and chemical processing equipment, to control the flow of process fluids. In some industrial processes, butterfly valves are used to control the flow of process fluids. Butterfly valves are advantageous in certain applications because they are inexpensive to manufacture, are relatively lightweight, and provide a quick and tight shutoff. Typically, industrial process conditions such as pressure conditions, operating temperature, and the type of process fluid dictate the type of valve assembly, including the type of butterfly valve seal that can be used. [0003] Some known butterfly valves include a circular di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/226F16K1/22
CPCF16K1/22F16K1/2266F16K1/2265F16K1/2263
Inventor A·J·金斯尔
Owner FISHER CONTROLS INT LLC