Shop › COVIDIEN | 31820 | Case of 50 | Argyle 18 Fr/Ch Suction Catheter Tray with Chimney Valve 1 / 2 Image 1 of 2 Image 2 of 2 COVIDIEN | 31820 | Case of 50 | Argyle 18 Fr/Ch Suction Catheter Tray with Chimney Valve $30.00 sold out COVIDIEN 31820 Case of 50 Argyle 18 Fr/Ch Suction Catheter Tray with Chimney ValveREF 31820 Sold Out Added! COVIDIEN 31820 Case of 50 Argyle 18 Fr/Ch Suction Catheter Tray with Chimney ValveREF 31820