OPW 8000 Series Endura™ Dual Split Flange (DSF) Swivel Joints

Call 800-876-2826 for current pricing.

Leak Detection/Purge Port (Leak Detection Port)
Main Seal
Backup, Leak Detection Purge Seal
Environmental Seal
Sealed, Deep-Groove dual Ball Bearing Chamber
Sealing Flange

The Endura™ Dual Split Flange (DSF) swivel joint from OPW® Engineered Systems represents the best in swivel technology. Specifically designed for the transfer of hazardous materials such as acids, solvents, petrochemicals and other toxic fluids, Endura™ sets the standard in swivel performance.

Standard Sizes: 2 in., 3 in., 4in.
Standard Materials: Carbon Steel, Stainless Steel
Standard Seals: Buna-N, Fluorocarbon, PTFE, EPDM, Neoprene
End Connections: FNPT, 150/300 ANSI Flanges, Butt Weld
End Connections: FNPT, 150/300 ANSI Flanges, Butt Weld


Endurance – Heavy-duty construction and unique design features result in long-life, hassle-free operation
Improves Uptime Performance – Endura™ DSF swivel technology, combined with the most user-friendly counterbalance solutions,results in LESS DOWNTIME–LESS LABOR– LESS COST!
Lowest Overall Cost of Ownership – Optimized performance, downtime prevention and reduced maintenance time and costs make this the best overall loading arm solution currently available.


Redundant Sealing
Incorporates a main seal, back-up seal, and environmental seals
If main product seal ever leaks due to normal wear, the back-up seal contains the fluid
Any main seal leakage would be channeled to leak detection port
Environmental seal provides a third layer of protection
Bearing Module
Deep groove replaceable dual & single race ball bearing technology
Easy replacement or rebuild options
Ball removal not required to access main seals
Endura™ 8800-8900 series feature ALL stainless steel construction
Easy Maintenance
Simply unbolt sealing flanges to access seals
No ball bearings to remove
Leak Detection Port
In the event of main seal leakage, fluid would be channeled to leak detection port
Quick & easy way to monitor performance so that maintenance can be performed
Purge Port
For critical applications, an inert gas can be injected at leak detection/purge port
Inert gas pressure higher than product pressure to virtually eliminate risk of fugitive emission.
Recommended for your extreme applications!

Styles Available