Dismantling joint is a specialized fitting used in piping systems to facilitate the installation, maintenance, and removal of equipment such as valves, pumps, and meters. It typically consists of a flanged adaptor, a sleeve, and tie rods, allowing for easy disassembly and reassembly of pipeline components.
| Nominal diameter |
PN10 | PN16 | |||||||||
| mm | Inch | L（mm） | D(mm) | K(mm) | H(mm) | STUD | L（mm） | D(mm) | K(mm) | H(mm) | STUD |
| 40 | 1½ | 180 | 150 | 110 | 330 | M16*4 | 180 | 150 | 110 | 330 | M16*4 |
| 50 | 2 | 180 | 165 | 125 | 330 | M16*4 | 180 | 165 | 125 | 330 | M16*4 |
| 65 | 2½ | 180 | 185 | 145 | 330 | M16*4 | 180 | 185 | 145 | 330 | M16*4 |
| 80 | 3 | 200 | 200 | 160 | 350 | M16*8 | 200 | 200 | 160 | 350 | M16*8 |
| 100 | 4 | 200 | 220 | 180 | 350 | M16*8 | 200 | 220 | 180 | 350 | M16*8 |
| 125 | 5 | 200 | 250 | 210 | 350 | M16*8 | 200 | 250 | 210 | 350 | M16*8 |
| 150 | 6 | 200 | 285 | 240 | 350 | M20*8 | 200 | 285 | 240 | 350 | M20*8 |
| 200 | 8 | 220 | 340 | 295 | 380 | M20*8 | 220 | 340 | 295 | 380 | M20*12 |
| 250 | 10 | 220 | 400 | 350 | 380 | M20*12 | 230 | 400 | 355 | 400 | M24*12 |
| 300 | 12 | 220 | 455 | 400 | 390 | M20*12 | 250 | 455 | 410 | 420 | M24*12 |
| 350 | 14 | 230 | 505 | 460 | 400 | M20*16 | 260 | 520 | 470 | 440 | M24*16 |
| 400 | 16 | 230 | 565 | 515 | 410 | M24*16 | 270 | 580 | 525 | 460 | M27*16 |
| 450 | 18 | 250 | 615 | 565 | 430 | M24*20 | 270 | 640 | 585 | 470 | M27*20 |
| 500 | 20 | 260 | 670 | 620 | 450 | M24*20 | 280 | 715 | 650 | 490 | M30*20 |
| 600 | 24 | 260 | 780 | 725 | 460 | M27*20 | 300 | 840 | 770 | 520 | M33*20 |
| 700 | 28 | 260 | 895 | 840 | 460 | M27*24 | 300 | 910 | 840 | 520 | M33*24 |
| 800 | 32 | 290 | 1010 | 950 | 500 | M30*24 | 320 | 1025 | 950 | 550 | M36*24 |
| 900 | 36 | 290 | 1115 | 1050 | 500 | M30*28 | 320 | 1125 | 1050 | 560 | M36*28 |
| 1000 | 40 | 290 | 1230 | 1160 | 510 | M33*28 | 340 | 1255 | 1170 | 600 | M39*28 |
| 1200 | 48 | 320 | 1455 | 1380 | 570 | M36*32 | 360 | 1485 | 1390 | 650 | M45*32 |
1.Adjustable Length: The dismantling joint can be extended or retracted within a certain range, providing flexibility during installation or maintenance.
2.Ease of Installation and Removal: It allows for quick and convenient disconnection and reconnection of pipeline sections, making maintenance and equipment replacement easier.
3.Compensation for Pipe Misalignment: It helps in aligning pipeline components and compensates for small misalignments, ensuring a better fit and sealing.
4.Secure Connection: The tie rods and flanges provide a secure, leak-proof connection, even under high pressure.
Dismantling joints are commonly used in water treatment plants, sewage systems, power plants, and industrial facilities. They are installed around valves, pumps, and other equipment that may require periodic maintenance or replacement, significantly reducing downtime and simplifying the process of installation and removal.
