b'WAFER PATTERN CHECK VALVES - ASG & AGW STYLE4.5 ASSEMBLY ASG SERIESa) Lay the body (1) down, with downstream side of the body facing upward. Lay plates (2) inside the body (1) with the hinge lugs together and sealing surface down. If support sleeves are fitted they must be inserted into plates before placing into the body. Insert bearings (6), (8) and plate lug bearings (7) between the body and plate lugs respectively. Check the plates (2) and lug bearings for end play. If body plates are severely worn they should be replaced.b) Valves with one spring, wind the spring (5) 180 in a clockwise direction. Place the wound spring (5) in position between the hinge lugs ensuring the convex side of the springs leg is against the plate. For valves with two springs, ensure that the convex side of the spring legs (long leg) are at the centre of each plate. While maintaining pressure on the spring (5), insert the hinge pin (3) into the body (1) passing it through the lug bearings (7) and (8), plates (2), spring (5), spring bearings (6).c) First insert the pin stabilisers (9) (where applicable) then Teflon tape the threads of the hinge pin retainer, and screw the hinge pin retainers (12) into the body (1).d) First insert the pin stabilisers (9) (where applicable) then insert stop pins (4) into the body (1). Teflon tape the threads of stop pin retainer (11) and screw the stop pin retainers into the body (1).4.6 ASSEMBLY AGW SERIESa) Lay the body down, with downstream side of the body facing upward. First reassemble the entire cartridge unit in the reverse order shown in 4.3 above. The thrust bearing inserts (6) should house the stop pin (4) and the hinge pin (3). The hinge pin (3) should have plates (2), springs (5) and bearing/washers (7) pre fitted.Note: Valves with one spring, wind the spring (5) 180 in a clockwise direction. Place the wound spring (5) in position between the hinge lugs ensuring the convex side of the springs leg is against the plate. For valves with two springs, ensure that the convex side of the spring legs (long leg) are at the centre of each plate. While maintaining pressure on the spring (5), insert the hinge pin (3) into the body (1), plates (2), spring (5), bearings (7).b) Finally the closure ring (version A) (14) and screws (9) (version A and B) should be fastened.For AGW and ASG series: under no circumstances wind springs to gain a higher or lower torsional load. Special high and low torque springs are available for this purpose. Before attempting shaft extraction, be sure to press a hand over the disc spring. Failure to do this may result in personal injury due to the spring launching itself unexpectedly once the shaft is pulled free of it.Australian Pipeline Valve - Installation, Operation and Maintenance Manual 9'