Metal Seal With Flexible Insert
AssigneeFisher Controls International LLC
InventorPaul A. Day
Life of this patent
Estimating the term…
Abstract
A rotary valve includes a valve body with an inlet, an outlet, a flow passage extending between the inlet and the outlet, and a rotating control element disposed within the valve body for selectively opening and closing the flow passage. The valve also includes a retainer ring mountable to the valve body which holds in place a seal carrier ring having an annular mounting flange mounted between the valve body and the retainer ring. The seal carrier ring also includes a seal carrier cartridge and a flexible portion coupling the seal carrier cartridge to the mounting flange to provide an improved seal and greater ease of assembly.
Claims42
A rotary valve comprising:
- a valve body having an inlet, an outlet, and a flow passage extending between the inlet and the outlet;
- a rotating control element disposed within the valve body for selectively opening and closing the flow passage;
- a retainer ring mountable to the valve body;
- a seal carrier ring having an annular mounting flange mounted between the valve body and the retainer ring, the seal carrier ring including a seal carrier cartridge and a flexible portion coupling the seal carrier cartridge to the mounting flange.
A seal for use in a butterfly valve having a valve body and a retainer ring, the seal comprising:
- a seal carrier ring having an annular mounting flange sized to extend between the valve body and the retainer ring,
- a seal carrier cartridge and
- a flexible portion coupling the seal carrier cartridge to the mounting flange.
A flexible seal carrier for use in a butterfly valve having a valve body, a retainer ring, and a valve disk having a sealing surface, the flexible seal carrier comprising:
- a radially outward extending mounting portion sized to extend between the valve body and the retainer ring,
- a sealing member sized to surround the sealing surface of the valve disk to form a sealing engagement, and
- a shaped cross-section disposed between the mounting portion and the sealing member and arranged to permit the sealing member to shift relative to an axis perpendicular to the sealing surface of the valve disk and an axis parallel to the sealing surface of the valve disk.
Dependencies are inferred from the claim text.