适用直管长超过30m且流体温度变化量超过17℃ (30℉) 的环境
安装时，依当时温度设定伸缩管上温度刻度即可，安装方便。
每25m装设一支伸缩管
| 品号 | 尺寸 | 规格 | 材质 | "O"环 | 接口 |
| VP-230 | 1/2"~2" | ANSI | UPVC | EPDM, FPM | Socket,Threaded |
| VP-230 Fabricated | 2-1/2"~12" | ANSI, JIS | UPVC | EPDM, FPM | Flanged |
| VP-231 | 1/2"~2" | ANSI | CPVC | EPDM, FPM | Socket, Threaded |
| VP-231 Fabricated | 2-1/2"~12" | ANSI, JIS | CPVC | EPDM, FPM | Flanged |
| NO. | PART | MATERIAL | Q'TY |
| 1 | 外本体(OUTER BODY) | UPVC,CPVC | 1 |
| 2 | 内本体(INNER BODY) | UPVC,CPVC | 1 |
| 3 | 法兰片(FLANGE) | UPVC,CPVC | 2 |
| 4 | 螺帽(UNION NUT) | UPVC,CPVC | 1 |
| 5 | 卡环(GLAND) | UPVC,CPVC | 1 |
| 6 | O环(O-RING) | EPDM,FPM | 3 |
| SIZE | 2-1/2" | 3" | 4" | 6" | 8" | 10" | 12" | |
| Nom. | (65mm) | (80mm) | (100mm) | (150mm) | (200mm) | (250mm) | (300mm) | |
| JIS | ØD | 175 | 185 | 210 | 280 | 330 | 400 | 445 |
| ØD1 | 140 | 150 | 175 | 240 | 290 | 355 | 400 | |
| n-Øe | 4-19 | 8-19 | 8-19 | 8-23 | 12-23 | 12-22 | 16-25 | |
| ANSI | ØD | 178 | 191 | 229 | 280 | 343 | 406 | 481 |
| ØD1 | 140 | 152 | 191 | 241 | 295 | 362 | 432 | |
| n-Øe | 4-19 | 4-19 | 8-19 | 8-22 | 8-22 | 12-25 | 12-25 | |
| L | 565 | 580 | 680 | 770 | 835 | 880 | 1050 | |
| L1 | 415 | 430 | 530 | 620 | 685 | 730 | 900 | |
| T | JIS | 24 | 25 | 28 | 32 | 36 | 42 | 42 |
| ANSI | 22 | 22 | 22 | 26 | 28 | 30 | 30 | |
| NO. | PART | MATERIAL | Q'TY |
| 1 | 本体(BODY) | UPVC,CPVC | 1 |
| 2 | 滑块(SLIDER BLOCK) | UPVC,CPVC | 1 |
| 3 | 直管(PIPE) | UPVC,CPVC | 1 |
| 4 | 异径接头(REDUCING BUSHING) | UPVC,CPVC | 1 |
| 5 | O环(O-RING) | EPDM,FPM | 2 |
| 6 | 直接头(COUPLING) | UPVC,CPVC | 1 |
| SIZE | 1/2" | 3/4" | 1" | 1-1/4" | 1-1/2" | 2" | |
| Nom. | (15mm) | (20mm) | (25mm) | (32mm) | (40mm) | (50mm) | |
| ANSI | Ød1 | 21.54 | 26.87 | 33.65 | 42.42 | 48.56 | 60.63 |
| Ød2 | 21.23 | 26.57 | 33.27 | 42.04 | 48.11 | 60.17 | |
| I | 24 | 27.4 | 30.58 | 34.75 | 37.93 | 41.1 | |
| ØD | 46 | 54 | 64 | 76 | 76 | 89 | |
| Ød | 21.3 | 26.7 | 33.4 | 42.2 | 48.3 | 60.3 | |
| L | 290 | 305 | 320 | 343 | 350 | 369 | |
| L1 | 150 | 150 | 150 | 150 | 150 | 150 | |
