Patent · US Expired

Satellite seal arrangement for plug valve, ball valve or gate valve

US6007048A · kind A · utility

0Cited by

14References

1Claims

0Family size

Assignee

FMC Corporation · US

Inventors

Tep Ungchusri · Diemelstraße, US
Roy Bates · Swift Creek Farms, US
Robert Witt · Dresden, DE

Key dates

Filing date	Apr 3, 1997
Grant date	Dec 28, 1999
Priority date	—
Expiry date	Apr 3, 2017

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K3/0227
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A plug or gate valve including two seats shaped as cylindrical segments and having a first continuous seal surrounding the flow passage and at least one satellite seal outside the first seal to reduce the area upon which pressure acts to force the segment toward the plug or gate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.