DUR O LOK couplings are all-purpose, lightweight connectors that replace standard ANSI flanges. The design of DUR O LOK couplings ensures reliable operation over a wide range of temperatures.
The performance superiority, space, and weight provided by DUR O LOK couplings make them the preferred choice in many pipe connecting applications.
How It Works
Reduce materials cost
Reduce space requirements for pipe racks
The DUR O LOK coupling meets the requirements of the following codes:
• ASME B31.1, Code for Pressure Piping
• ASME B31.3, Code for Process Piping
Compact - length and outside diameter reduced by 30% - 50%, compared to flanges. Allows double the number of pipes per rack and improves external flow distribution for immersed couplings. It will reduce shadowing for couplings used in process vessels.
Lightweight - weight reduced by 60% - 90%, compared to flanges.
Simple - Number of parts reduced by 55% - 75% per connection, compared to flanges.
Fast - Save up to 10-15 minutes to make or break each connection.
Non-restrictive - Full port inside diameter eliminates pressure drop and allows "pigging".
Smooth interior bore - Minimizes flow disturbances. It eliminates attrition in catalyst and other solids conveying applications.
Boltless and threadless - Only safety set screws required. No torque measurements are required. No bolt holes to align. No need to tighten connections after thermal cycling. Simplifies painting and insulating.
Thermally stable - Design minimizes thermal expansion effects on sealing. It will tolerate very rapid changes in external or internal temperatures.
No interference fits or metal-to-metal sealing - Higher reliability. Less susceptible to damage.