Self-actuated bleed valves for gas turbine engines

A gas turbine engine comprising:

• a compressor section upstream of a combustor that is upstream of a turbine section, wherein the compressor section, the combustor, and the turbine section define a gas path therethrough;
• and
• a bleed valve including:
• a housing mounted to a compressor case of the compressor section and including an inlet in fluid communication with the gas path in the compressor section and an outlet in fluid communication with a bleed exhaust, with a cylindrical flow path defined between the inlet and the outlet, wherein a diametral plane is defined by the cylindrical flow path;
• a butterfly disc inside the housing, rotatably mounted to the housing along a rotation axis between an open position of the butterfly disc allowing flow through the cylindrical flow path and a closed position of the butterfly disc blocking flow through the cylindrical flow path, wherein the rotation axis is on a first side of the diametral plane with the butterfly disc in both the open position and the closed position;
• a link rotatably connected to a pivot point on the butterfly disc for relative rotation of the link and the butterfly disc along a pivot axis parallel to the rotation axis, wherein the pivot axis is on a second side of the diametral plane opposite the first side in both the open position and the closed position;
• and
• a biasing member engaged between the housing and the link to bias the butterfly disc toward the open position.