The Dismantling Joint is a crucial pipe fitting designed to provide flexibility during the installation and maintenance of pipeline systems. Installed between two fixed flanges, this joint allows easy dismantling, alignment, and replacement of valves, pumps, or meters without stressing the pipework.
Our dismantling joints are widely used in municipal water supply, sewage treatment, industrial fluid networks, and building services. The adjustable length compensates for misalignments, thermal expansion, and other system variations, making it essential for systems that require frequent inspection or future upgrades.
Constructed with high-strength ductile iron or carbon steel and coated with anti-corrosion epoxy, each dismantling joint is engineered to withstand harsh environments, internal pressure, and mechanical stress. Sealing gaskets and bolts are carefully selected to ensure leak-free operation.
Available in a range of sizes and pressure classes (PN10, PN16, PN25), our dismantling joints comply with international standards such as ISO and EN, and are compatible with butterfly valves, gate valves, and other flange-mounted equipment.
As one of China’s leading valve and fitting manufacturers, we provide dependable products for engineering projects around the globe. With strict quality control and fast delivery, our dismantling joints are trusted by engineers, contractors, and utility companies worldwide.
Advantages of dismantling joint
1.Installation is simple and convenient, convenient valve installation.
2.Rubber is strong in compression and elasticity.
3.Metal and sealing rings are highly stringent.
4.In the pipeline, it can effectively compensate and ease the pipe and blind plate thrust.
Standard of Implementation
| Category | Details |
|---|---|
| Type | Flange |
| Face to Face | API609, BS5155, DIN3202, ISO5752 |
| Flange | DIN, BS, UNI, ISO, ANSI, AS, JIS |
| Mounting Flange | ISO5211 |
| Working Pressure | PN16 (200PSI) |
| Application | HVAC, Water Supply & Sewage, Food & Beverage, Chemical/petrochemical/processing, Power and Utilities, Paper and Pulp, Ship Building |
Standard Materials Of Main Parts
| ITEM | PART NAME | MATERIAL |
|---|---|---|
| 1 | FLANGE | Carbon Steel |
| 2 | SEALING RING | NBR |
| 3 | GLAND | Carbon Steel |
| 4 | PIPE | Carbon Steel |
| 5 | BOLT | Carbon Steel 8.8 GRADE |
Dimensions:(mm)
| Size | D | K | n x d | D | D |
| Dn50 | 160 | 125 | 4*18 | 200 | ±20 |
| Dn65 | 180 | 145 | 4*18 | 200 | ±20 |
| Dn80 | 195 | 160 | 4*18 | 200 | ±20 |
| Dn100 | 215 | 180 | 8*18 | 200 | ±20 |
| Dn125 | 245 | 210 | 8*18 | 200 | ±20 |
| Dn150 | 280 | 240 | 8*23 | 200 | ±20 |
| Dn200 | 335 | 195 | 12*23 | 200 | ±20 |
| Dn225 | 365 | 325 | 12*23 | 200 | ±20 |
| Dn250 | 405 | 355 | 12*26 | 200 | ±20 |
| Dn300 | 460 | 410 | 16*26 | 220 | ±25 |
| Dn350 | 520 | 470 | 16*26 | 220 | ±25 |
| Dn400 | 580 | 525 | 16*30 | 220 | ±25 |
| Dn450 | 640 | 585 | 20*30 | 220 | ±25 |
| Dn500 | 715 | 650 | 20*34 | 220 | ±25 |
| Dn600 | 840 | 770 | 20*36 | 240 | ±25 |
| Dn700 | 910 | 840 | 24*36 | 240 | ±25 |
| Dn800 | 1025 | 950 | 24*39 | 350 | ±30 |
| Dn900 | 1125 | 1050 | 28*39 | 350 | ±30 |
| Dn1000 | 1255 | 1170 | 28*42 | 350 | ±30 |
| Dn1200 | 1485 | 1390 | 32*48 | 370 | ±30 |
| Dn1400 | 1685 | 1590 | 36*48 | 370 | ±30 |
| Dn1600 | 1930 | 1820 | 40*55 | 380 | ±30 |
| Dn1800 | 2130 | 2100 | 44*55 | 380 | ±30 |
| Dn2000 | 2345 | 2230 | 48*60 | 400 | ±30 |
