A gas turbine engine , comprising: a case surrounding a main body that is disposed about a central longitudinal axis (A), the main body having a first wall that extends between a first wall first end and a first wall second end , a second wall that extends between a second wall first end and a second wall second end , and an intermediate wall disposed between the first wall and the second wall and extends between an intermediate wall first end and an intermediate wall second end ; and a bleed valve system , comprising: a retaining ring that is disposed between the first wall and the intermediate wall, the retaining ring having a first portion that defines a plurality of retaining ring apertures and a second portion that extends from the first portion towards the intermediate wall second end, and a metering ring that abuts the first portion, the metering ring defining a plurality of metering ring apertures , characterised in that : a pocket is defined between the intermediate wall second end, the second portion, and the first portion, and in that the bleed valve system further comprises: a biasing member disposed in the pocket, the biasing member being arranged to urge the metering ring against the retaining ring. a case surrounding a main body that is disposed about a central longitudinal axis (A), the main body having a first wall that extends between a first wall first end and a first wall second end , a second wall that extends between a second wall first end and a second wall second end , and an intermediate wall disposed between the first wall and the second wall and extends between an intermediate wall first end and an intermediate wall second end ; and a bleed valve system , comprising: a retaining ring that is disposed between the first wall and the intermediate wall, the retaining ring having a first portion that defines a plurality of retaining ring apertures and a second portion that extends from the first portion towards the intermediate wall second end, and a metering ring that abuts the first portion, the metering ring defining a plurality of metering ring apertures , characterised in that : a pocket is defined between the intermediate wall second end, the second portion, and the first portion, and in that the bleed valve system further comprises: a biasing member disposed in the pocket, the biasing member being arranged to urge the metering ring against the retaining ring. a retaining ring that is disposed between the first wall and the intermediate wall, the retaining ring having a first portion that defines a plurality of retaining ring apertures and a second portion that extends from the first portion towards the intermediate wall second end, and a metering ring that abuts the first portion, the metering ring defining a plurality of metering ring apertures , characterised in that : a pocket is defined between the intermediate wall second end, the second portion, and the first portion, and in that the bleed valve system further comprises: a biasing member disposed in the pocket, the biasing member being arranged to urge the metering ring against the retaining ring. a pocket is defined between the intermediate wall second end, the second portion, and the first portion, and in that the bleed valve system further comprises: a biasing member disposed in the pocket, the biasing member being arranged to urge the metering ring against the retaining ring. <EOS>