Air brake system valve for trailersThe invention relates to an air brake system valve (10) comprising retaining ring (24), and spring top bearing lower casing (21) and spring top bearing top casing (22) which provide sealing by coverin…DRIVE·Oct 28·2 min readFollowB60T15/04FILKAR OTOMOTIV SANAYI VE TICARET ANONIM SIRKETI [TR]