049 Expansion Joint JEP Model ＊＊＊ Size ＊ Rubber E EPDM ＶＦＫＭ Ｆ ViflonRF/FKM-F C ViflonRC/FKM-C JEP Expansion Joint T Connection T Socket U Material U U-PVC J Standard J JIS 020 20 �o . 100 100 �o PRODUCT MODEL CODE LIST Expansion Joint φD1 φD2 φD3 φd1 L Taper 1/T φd R1 R2 When installing When piping is expanded by heat 2 6 4a 1 7 5 4b 3 φD1 φD2 φD3 φd1 L Taper 1/T φd R1 R2 When installing When piping is expanded by heat 2 6 4a 1 7 5 4b 3 Dimensions Diagram φD1 φD2 φD3 φd1 L Taper 1/T φd R1 R2 When installing When piping is expanded by heat 2 6 4a 1 7 5 4b 3 ・ Expansion/contraction absorption margin is large and the thermal stress of piping is absorbed. ・Easy removal from piping by just loosening the union nut. ・No need for a large piping space with the compact design. ・No need for installation of piping expansion U bend. ・No slipping of pipes. (Because stop ring �D is provided) Features Size d d1 R1 1/T D2 D1 D3 L R2 mm inch Max. Min. Expansion/ Contraction Margin 20 3/4 20 26.13 24 1/34 35 60 35 243 163 80 25 1 25 32.16 27 1/34 43 70 39 250 170 80 30 11/4 31 38.19 30 1/34 50 82 47 258 178 80 40 11/2 40 48.21 37 1/37 59 100 59 272 192 80 50 2 51 60.25 42 1/37 72 106 72 285 205 80 65 21/2 65 76.60 61 1/48 88 133 88 314 234 80 75 3 78 89.60 64 1/49 105 152 105 330 250 80 100 4 100 114.70 84 1/56 132 210 132 422 322 100 ■ Dimensions Table (Unit: mm) No. Description pcs. Material �@ Body 1 U-PVC �A End Connector (A) 1 U-PVC �B End Connector (B) 1 U-PVC ◯4a Union Nut (A) . U-PVC ◯4b Union Nut (B)1) 1 U-PVC �D Stop Ring 1 U-PVC �E O-Ring (A) 1 EPDM, FKM, ViflonRF (FKM-F), ViflonRC (FKM-C) �F O-Ring (B) 2 EPDM, FKM, ViflonRF (FKM-F), ViflonRC (FKM-C) 1) Use for 65 to 100 mm. Parts Table 　　　 Piping Length L Temperature Difference 5m 10m 20m 30m 40m 50m 60m 70m 80m 10｢ｪC 4 7 14 21 28 35 42 49 56 20｢ｪC 7 14 28 42 56 70 84 98 112 30｢ｪC 11 21 42 63 84 105 126 147 168 40｢ｪC 14 28 56 84 112 140 168 196 224 50｢ｪC 18 35 70 105 140 175 210 245 280 60｢ｪC 21 42 84 126 168 210 252 294 336 70｢ｪC 25 49 98 147 196 245 294 343 392 80｢ｪC 28 56 112 168 224 280 336 392 448 Pipe Heat Expansion Table (Unit: mm) Material Working Temperature Maximum Working Pressure (Normal Temperature) MPa{kgf/cm2} Connection Socket End Unplasticized Polyvinyl Chloride Pipe (U-PVC) 5-60｢ｪC 1.0{10.2} ○ Main Specification When installing When piping is expanded by heat ∴ One piece per 50 m. 　L: Length of piping that the expansion joint absorbs (mm) △R: Piping expansion/contraction length Expansion/contraction margin for 75 mm from the dimensions table R2＝80 mm Give margins on both ends 5 mm×2＝10 mm △R:＝(80.10) mm 　α: Heat expansion coefficient of hard polyvinyl chloride pipe 7×10.5 (/℃) △ｔ : Temperature difference 20 (℃) How often (every XX m) shall expansion joints be inserted when the size is 75 mm and temperature difference is 20℃? Calculation Formula　Ｌ＝ △R ……………（1） α△ｔ Ｌ＝ ＝50000 mm 80.10 7×10.5×20 When the value above is assigned to (1) ・ Make sure to provide the first support (loose support) at 0.5 m or less of an expansion joint on both sides. ・ Sufficiently consider the expansion and contraction amounts of piping. (When piping expands: Use the expansion joint being extended to a certain degree.) (When piping contracts: Use the expansion joint being shrunk to a certain degree.) First AV Expansion Joint instruction 0.5 m or less 0.5 m or less