US 11,898,656 B1
Packing for a high-pressure valve
Aurelien Reau, Flers (FR); Mickael Olaya, Valdallière (FR); Arnaud Riviere, Couvains (FR); Romain Chenu, Condé-sur-Noireau (FR); and Valentin Mercier, Flers (FR)
Assigned to Dresser, LLC, Houston, TX (US)
Filed by Dresser, LLC, Houston, TX (US)
Filed on Dec. 23, 2022, as Appl. No. 18/146,060.
Int. Cl. F16K 41/04 (2006.01); F16K 27/02 (2006.01)
CPC F16K 41/04 (2013.01) [F16K 27/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A high-pressure valve comprising:
a valve bonnet defining a packing box having an inner surface Roughness Average (Ra) of 0.15 or less;
a plurality of Polytetrafluoroethylene (PTFE) packing rings in a packing stack; and
a packer bolted to the bonnet and extending into the packing box, the packer configured to apply a packing pressure on the packing, wherein the packing pressure is between 100 megapascals (MPa) and 200 MPa.