Shanghai Songjiang Vibration Absorber Group Co., Ltd. produces DN800 double flanged loosen sleeve limit expansion joints. This product has a much higher pressure bearing capacity compared to double flanged rubber expansion joints. Below is the delivery scene of the DN800 limit expansion joint by Songjiang Group. For further inquiries, please feel free to contact us.
I. Scene Photos of DN800 Double Flanged Loosen Sleeve Limit Expansion Joint by Songjiang:

II. Introduction of DN800 Double Flanged Loosen Sleeve Limit Expansion Joint by Songjiang:
- Name: Double Flanged Loosen Sleeve Limit Expansion Joint
- Model: VSSJA-2(B2F)
- Pressure: PN10
- Material: Carbon Steel (Q235)
- Application: Water Treatment Plants, Wastewater Treatment Plants
- Warranty: 10 Years
- Manufacturer: Shanghai Songjiang Vibration Absorber Group Co., Ltd.
III. Explanation of DN800 Double Flanged Loosen Sleeve Limit Expansion Joint by Songjiang:
- The VSSJA-2 type double flanged loosen sleeve limit expansion joint is suitable for flange connections on both ends. During installation, adjust the connection length between the product ends and the flanges, then uniformly tighten the cover bolts diagonally, and adjust the limit nut to allow the pipeline to expand and contract freely within the specified range, locking the expansion amount to ensure the safe operation of the pipeline.
- Product Features: Purpose: The VSSJA-2 type double flanged limit expansion joint is used as an accessory for pipeline installation, mainly installed before and after valves or pumps, to adjust the installation clearance within a certain range. Features: It can axially expand within a certain range and act as a limit once it exceeds its maximum expansion, also capable of overcoming the offset produced by pipeline docking at different axes within a certain angle range, facilitating the installation and disassembly of valve pipelines to the maximum extent.
- The double flanged limit expansion joint consists mainly of the body, sealing ring, cover, and expansion short pipe. A limit device is added based on the performance of the loosen sleeve expansion joint, and double nuts are used to lock it at the maximum expansion amount. The pipeline can expand and contract freely within the allowed expansion amount, acting as a limit once it exceeds its maximum expansion to ensure the safe operation of the pipeline, especially suitable for connections in pipelines with vibration or certain slopes and bends.
- During installation, adjust the connection length between the product ends and the flanges, then uniformly tighten the cover bolts diagonally, and adjust the limit nut to allow the pipeline to expand and contract freely within the specified range, locking the expansion amount to ensure the safe operation of the pipeline. When working, it can transmit the thrust in the opposite direction along the entire pipeline, reducing the pressure thrust (blind plate force) on the connected parts and compensating for installation errors in the pipeline. Double flanged transmission force is mainly used for loose sleeve connections of pumps, valves, and other accessories.

