Collection: Single Schedule Eccentric Swage Nipples

M.E.G.A. offers a complete line of single schedule eccentric swage nipples, designed for precision, reliability, and consistent performance. These fittings provide an offset (eccentric) connection between pipes of different diameters, ensuring a uniform wall thickness — the key advantage of the single schedule design.

All M.E.G.A. eccentric swage nipples are manufactured in compliance with ASME B16.9, MSS SP-95, and ASTM standards, guaranteeing dimensional accuracy and material consistency.

Download the Single Schedule Eccentric Swage Nipples Catalog

Understanding single schedule eccentric swage nipples

A single schedule eccentric swage nipple connects two pipes of different nominal diameters while maintaining the same wall thickness across the fitting. The eccentric design means the centers of the two ends are offset — an essential feature for avoiding fluid accumulation and gas entrapment in horizontal piping systems.

Benefits of the eccentric design

• Prevents fluid or gas pockets: ensures full drainage in horizontal lines.
• Smooth flow transitions: reduces turbulence and pressure loss.
• Uniform wall thickness: maintains equal pressure rating throughout the connection.

This type of fitting is ideal for applications requiring consistency, predictable performance, and simplified pipeline design.

Key features and advantages

• Consistent wall thickness (single schedule): ensures equal pressure resistance across the entire nipple.
  
• Optimized flow dynamics: eccentric configuration promotes efficient fluid drainage.
  
• High-grade materials: available in carbon steel, stainless steel, and special alloys for corrosive, high-temp, or high-pressure environments.
  
• Standards compliance: manufactured per ASME B16.9, ASME B16.11, ASTM, and MSS SP-95.
  
• Easy installation: welded or threaded end options for secure, leak-free connections.
  
• Long-lasting durability: designed to minimize maintenance and downtime.

Materials and construction

M.E.G.A. manufactures eccentric swage nipples in a variety of materials suitable for different service conditions:

• Stainless Steel: 304/304L, 316/316L, 321, 347
• Carbon Steel: ASTM A234 WPB, WPC
• Alloy Steel: ASTM A234 WP5, WP9, WP11, WP22, WP91
• Special Alloys: Duplex, Super Duplex, Inconel, Monel, Hastelloy

Available in seamless or welded construction, each nipple undergoes strict dimensional and quality inspections to ensure integrity and precision.

Technical data and dimensions

Applicable standards:

• ASME B16.9 – Factory-Made Wrought Buttwelding Fittings
• ASME B16.11 – Forged Socket-Weld and Threaded Fittings
• ASTM – Material specifications
• MSS SP-95 – Swage Nipples and Bull Plugs Standard

Applications

Single schedule eccentric swage nipples are used across a wide range of industries:

• Oil & gas: Refineries, pipeline systems, offshore facilities
• Chemical and petrochemical plants: Corrosive and non-corrosive fluid transfer
• Power generation: Steam, condensate, and feedwater lines
• HVAC and water treatment: Efficient fluid distribution
• Food & Beverage: Stainless steel versions for hygienic installations

FAQ – Single schedule eccentric swage nipples

1. What is the main purpose of an eccentric swage nipple?

To connect two pipes of different diameters while keeping their outer surfaces aligned, ensuring proper drainage or air release in horizontal lines.

2. What is the difference between a single schedule and a double schedule nipple?

A single schedule nipple maintains the same wall thickness (schedule) throughout.
A double schedule nipple has different wall thicknesses at each end, used to connect pipes with different schedules.

3. Which standards apply?

All M.E.G.A. swage nipples comply with ASME B16.9, ASME B16.11, ASTM, and MSS SP-95.