
Learn in detail about the stainless steel flexible joint DN150, 300mm in length, with dual JIS 10K flanged ends. An essential accessory to reduce vibration, protect piping systems, and ensure efficient pump operation.
The DN150 flexible joint product with a length of 300 mm featuring a stainless steel JIS 10K flanged configuration on both ends is a technical solution widely applied at the suction and discharge ports of high-capacity pumps, fire protection systems, and central air conditioning systems in industrial and civil projects.
What is a flexible joint and its role in piping systems?
A flexible joint is a pipeline accessory installed between two pipe sections, or between a pipeline and equipment such as globe valves, gate valves, butterfly valves, ball valves, pressure reducing valves, and safety valves through flanged or threaded connections.
The core function of this accessory is to allow the pipeline to expand and contract within a certain limited range, thereby protecting the entire system from incidents caused by sudden pressure increases or decreases during operation.

Why must flexible joints be used in piping systems?
In industrial pump systems, operating pumps typically generate significant vibration and mechanical oscillation forces. Flexible joints possess excellent elastic deformation capabilities, helping to absorb and reduce acting forces as well as mechanical impacts.
Vibration energy is temporarily stored in the elastic body and then gradually released outward, thereby minimizing sudden shocks transmitted directly from the pump to the connected piping system.
Thanks to this mechanism, using flexible joints brings the following practical benefits:
- Compensating for minor misalignment during pipeline installation.
- Providing effective shock absorption, protecting and extending the lifespan of pumps, valves, and welded joints.
- Preventing the risk of pipe cracking due to thermal stress or long-term vibration.

Detailed technical specifications of the DN150 x 300mm flexible joint
For the standard configuration, the product has basic technical specifications listed in the table below:
| Technical feature | Detailed specification |
|---|---|
| Nominal diameter | DN150 (equivalent to 168 mm pipe outer diameter) |
| Overall length | 300 mm (optional 200 mm or according to actual requirements) |
| Flange standard | Stainless steel JIS 10K flange (or galvanized steel upon request) |
| Body and braid material | Stainless steel 304 (optional stainless steel 316 for highly corrosive environments) |
| Flange connection type | 2 fixed ends or flexible with 1 fixed end combined with 1 floating end |
Important notes for installation and use
To ensure the equipment operates durably and achieves high performance, the installation process must comply with the following basic technical principles:
- Do not use flexible joints to bend or deflect pipelines beyond the manufacturer's permitted limits.
- Avoid twisting the corrugated hose body during the tightening of flange bolts.
- Arrange fixed pipe supports on both sides of the joint to ensure the weight of the pipe section is not directly loaded onto the joint.
Contact for consultation and product ordering
Customers needing further detailed information, a quotation, or to purchase flanged flexible joints, please contact Tan Dat Flex immediately via the information below for prompt assistance:
CÔNG TY TNHH SX TM VÀ DỊCH VỤ CƠ KHÍ TẤN ĐẠT
- Hotline: 0906 304 114
- Zalo: 0906304114
- Email: khopgiannoinox.vn@gmail.com
Frequently asked questions
What is the outer diameter equivalent for DN150?
Are JIS 10K and BS PN16 flanges interchangeable?
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