What are double schedule eccentric swage nipples?
A double schedule eccentric swage nipple allows the connection of pipes that differ not only in diameter but also in wall thickness. Its eccentric design ensures offset alignment — essential for efficient drainage and pressure balance — while the double schedule feature provides flexibility for systems using multiple pipe specifications.
Key advantages
- Versatile connections: Join pipes with different wall thicknesses and diameters.
- Enhanced pressure integrity: Maintains consistent pressure handling between transitions.
- Reduced welding complexity: Eliminates the need for on-site custom fabrication.
- Cost-effective customization: Simplifies installation in specialized systems.
- Reliable performance: Built to withstand variable temperatures and pressures.
Features and customization options
- Tailored configurations: wide range of size and schedule combinations available.
- High-performance materials: stainless, carbon, alloy, and exotic steels.
- Precision machining: tight dimensional tolerances ensure perfect fit.
- End finish options: plain, beveled, or threaded ends available.
- Compliance: Meets ASME, ASTM, and project-specific requirements.
Applications of double schedule eccentric swage nipples
Double schedule fittings are used when system sections have different pressure or material specifications:
- High-pressure systems: transitioning between different-rated sections
- Oil & Gas and Refining: mixed wall thickness systems for pressure control
- Power plants: steam and feedwater systems with variable loads
- Chemical processing: integrating diverse material and schedule combinations
- Custom fabrication projects: tailor-made pipeline configurations
FAQ – Double schedule eccentric swage nipples
1. When should I use a double schedule eccentric swage nipple?
When connecting two pipes that differ in both diameter and wall thickness, especially where varying pressure zones exist.
2. Are they more expensive than single schedule types?
Yes, due to their dual-schedule precision manufacturing, but they often reduce total project costs by eliminating custom fabrication steps.
3. Can these nipples handle high temperature and pressure?
Absolutely. When made from appropriate alloy or stainless steels, they meet or exceed the performance requirements of high-pressure and high-temperature service lines.
