206 �T. Principle TS method has been widely used in Japan for joining PVC pipes with TS fittings, which utilizes the elasticity of PVC wall and the swelling of PVC surface by solvent cement. Refer to Appendix (A) for details of principle. �U. Attention Required During Installation (1) The worker should use clean tools and wear clean gloves when handling PVC pipe and fittings so as to prevent from sticking foreign materials, such as dust and oils, on both internal and external surfaces. (2)“ Asahi AV” Solvent Cement should be used for joining Asahi AV PVC pipes with TS fittings. Also, it’s type should be properly selected depend on surrounding condition (Temperature etc.), material (PVC, HI-PVC or C-PVC) and Nominal Size (refer to �V. Preparation of Tools). (3) To prevent the solvent cement from coming out onto both external and internal surfaces of pipes and fittings, the worker should strictly follow the procedures described below. (4) If the solvent cement is not applied directly on PVC surfaces of the joining part, the adhesion of pipes and fittings shall not be attained properly. Therefore, the joining portion should be cleaned with acetone-impregnated gauze, and chips/ dust of cutting and chamfering (beveling) should be removed completely prior to applying the solvent cement. �V. Preparation of Tools Tools Uses Pipe-Cutter Cutting of pipe Chamfering Tool or Knife Chamfering of pipe edge Felt-Tipped Pen (Tapered) Marking of guideline, cutting line etc. Tape Scribing of cutting line Ruler Measuring of dimensions Gauze Cleaning Acetone Cleaning Solvent cement - AV #32 - AV #52 - AV #62 - AV #90 - AV #88 Cementing - Low Viscosity, Quick Dry, for PVC, in Blue Can - High Viscosity, Quick Dry, for PVC, in Red Can - High Viscosity, Slow Dry, for PVC, in Yellow Can - for HI-PVC, in Dark Blue Can - for C-PVC, in Brown Can Brush Applying solvent cement Gloves Protection of hands, prevention sticking of oil on pipe and fitting Waste Cloth Wiping off of solvent cement Insertion Tool Insertion of pipe (For Size of 65�o and above, Puller or Lever-Block is required) TECHNICAL DATA TS Method of “ A sahi AV” PVC Pipes Solvent Welding for PVC, HI-PVC and C-PVC