Dual trap assembly for use with AF-0060 or AF-0061 manifolds. Pre-trap (B) is 51mm OD x 250mm long with 28/15 polished socket joints to connect the line shut off adapter (A) to the main trap stopper assembly (C) which has 28/15 o-ring ball joints. The main trap (D) is constructed using a 57mm flat o-ring flange and the body is 57mm OD x 250mm long. Center to center distance between the traps is 175mm. Connection to the manifold is made via a #15 o-ring joint (E) while the fore-pump is connected to the main trap assembly at the (F) port using any size of AF-0070 or AF-0071 adapters depending upon the size of flexible tubing being used. A #15 o-ring joint (G) is placed between the main and pre-trap to permit connection of vacuum measurement device via a AF-0306-01 thermocouple adapter. Both traps can be isolated from the manifold or pump via 0-12mm Chem-Vac™; Chem-Cap®; valves (H). Trap assembly is designed to allow connection to either the right or left side of AF-0060 or AF-0061 manifolds. Complete item is supplied with one #331 Viton o-ring, one CG-139-02 horseshoe clamp, three #116 Viton o-rings and two CG-150-05 #28 S.S. pinch clamps.