Superlok Union SU


Union Fitting
Superlok Union (SU)
Union Fitting by Superlok – For Secure and Leak-Free Connections
The Union Fitting by Superlok, often denoted simply as SU, is an essential fitting used in various piping and tubing systems. This component connects two separate sections of tubing or piping, allowing them to be joined together securely and leak-free. The Superlok Union is commonly used in a wide range of industries where precision and dependable connections are vital for ensuring the efficient transport of fluids or gases within piping systems.
Connects Fractional Tubes
Part No. | Tube OD D (inch) | d Min | Width Across Flat h (inch) | Width Across Flat H (inch) | A | B | I | L |
---|---|---|---|---|---|---|---|---|
SU - 1 | 1/16 | 1.27 | 5/16 | 5/16 | 8.63 | 10.92 | 17.52 | 25.15 |
SU - 2 | 1/8 | 2.28 | 7/16 | 7/16 | 12.70 | 15.24 | 22.35 | 35.56 |
SU - 3 | 3/16 | 3.04 | 7/16 | 1/2 | 13.71 | 16.00 | 24.13 | 37.33 |
SU - 4 | 1/4 | 4.82 | 1/2 | 9/16 | 15.24 | 17.78 | 26.16 | 40.89 |
SU - 5 | 5/16 | 6.35 | 9/16 | 5/8 | 16.25 | 18.54 | 28.19 | 42.92 |
SU - 6 | 3/8 | 7.11 | 5/8 | 11/16 | 16.76 | 19.30 | 30.22 | 44.95 |
SU - 8 | 1/2 | 10.41 | 13/16 | 7/8 | 22.86 | 21.84 | 30.98 | 51.30 |
SU - 10 | 5/8 | 12.70 | 15/16 | 1 | 24.38 | 21.84 | 31.75 | 52.07 |
SU - 12 | 3/4 | 15.74 | 1-1/16 | 1-1/8 | 24.38 | 21.84 | 33.27 | 53.59 |
SU - 14 | 7/8 | 18.28 | 1-3/16 | 1-1/4 | 25.90 | 21.84 | 34.79 | 55.11 |
SU - 16 | 1 | 22.35 | 1-3/8 | 1-1/2 | 31.24 | 26.41 | 40.38 | 64.77 |
SU - 20 | 1-1/4 | 27.69 | 1-3/4 | 1-7/8 | 41.15 | 38.86 | 48.00 | 92.20 |
SU - 24 | 1-1/2 | 34.04 | 2-1/8 | 2-1/4 | 50.04 | 45.21 | 53.59 | 107.95 |
SU - 32 | 2 | 45.97 | 2-3/4 | 3 | 67.56 | 62.74 | 74.68 | 149.35 |
Data Sheet for SU Unions
Connects Fractional Metric Tubes
Part No. | Tube OD D (inch) | d Min | Width Across Flat h (inch) | Width Across Flat H (inch) | A | B | I | L |
---|---|---|---|---|---|---|---|---|
SU - 2M | 2 | 1.7 | 12 | 12 | 12.9 | 15.3 | 22.4 | 35.6 |
SU - 2 | 1/8 | 2.28 | 7/16 | 7/16 | 12.70 | 15.24 | 22.35 | 35.56 |
SU - 3 | 3/16 | 3.04 | 7/16 | 1/2 | 13.71 | 16.00 | 24.13 | 37.33 |
SU - 4 | 1/4 | 4.82 | 1/2 | 9/16 | 15.24 | 17.78 | 26.16 | 40.89 |
SU - 5 | 5/16 | 6.35 | 9/16 | 5/8 | 16.25 | 18.54 | 28.19 | 42.92 |
SU - 6 | 3/8 | 7.11 | 5/8 | 11/16 | 16.76 | 19.30 | 30.22 | 44.95 |
SU - 8 | 1/2 | 10.41 | 13/16 | 7/8 | 22.86 | 21.84 | 30.98 | 51.30 |
SU - 10 | 5/8 | 12.70 | 15/16 | 1 | 24.38 | 21.84 | 31.75 | 52.07 |
SU - 12 | 3/4 | 15.74 | 1-1/16 | 1-1/8 | 24.38 | 21.84 | 33.27 | 53.59 |
SU - 14 | 7/8 | 18.28 | 1-3/16 | 1-1/4 | 25.90 | 21.84 | 34.79 | 55.11 |
SU - 16 | 1 | 22.35 | 1-3/8 | 1-1/2 | 31.24 | 26.41 | 40.38 | 64.77 |
SU - 20 | 1-1/4 | 27.69 | 1-3/4 | 1-7/8 | 41.15 | 38.86 | 48.00 | 92.20 |
SU - 24 | 1-1/2 | 34.04 | 2-1/8 | 2-1/4 | 50.04 | 45.21 | 53.59 | 107.95 |
SU - 32 | 2 | 45.97 | 2-3/4 | 3 | 67.56 | 62.74 | 74.68 | 149.35 |
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Union Fitting by Superlok: A Reliable Alternative to Swagelok® Fittings
For decades, Swagelok® fittings have been a go-to solution for many industries. However, Superlok fittings have emerged as a strong alternative, offering comparable quality, performance, and cost-effectiveness. In the world of fluid and gas handling systems, the choice of fittings is critical to ensuring safety, reliability, and efficiency.
Superlok fittings are precision-engineered tube and pipe fittings designed for high-pressure fluid and gas systems. Manufactured by Superlok, a trusted brand in the industry, these fittings are widely used in industries such as oil and gas, chemical processing, semiconductor manufacturing, and pharmaceuticals. Known for their durability, leak-tight performance, and ease of installation, Superlok fittings are a viable alternative to Swagelok® fittings.
For businesses looking to optimize their fluid and gas systems, Superlok fittings provide a compelling alternative to Swagelok®. With their high-quality materials, leak-tight performance, and cost-effectiveness, Superlok fittings are an excellent choice for industries that demand reliability and efficiency. Additionally, their pan America availability and ease of installation make them a practical solution for both small-scale and large-scale projects.
Industry Leaders Using Superlok
Union fittings are predominantly used in industries where frequent assembly, disassembly, and maintenance of fluid and gas systems are required. These industries include oil and gas, chemical processing, pharmaceuticals, food and beverage, and semiconductor manufacturing. Union fittings are especially valued for their ability to create secure, leak-tight connections that can be easily disconnected and reassembled without compromising system integrity.
Superlok’s Union Fittings are engineered to meet the rigorous demands of these industries, offering exceptional durability, precision, and performance. Made from high-quality materials like stainless steel, Superlok Union Fittings provide excellent corrosion resistance, making them ideal for harsh environments and corrosive media. Their innovative design ensures a leak-tight seal, even under high-pressure conditions, while their ease of installation and maintenance reduces downtime and operational costs. Whether it’s for connecting pipelines in an oil refinery, maintaining sterile systems in pharmaceutical production, or ensuring hygienic fluid handling in food processing, Superlok Union Fittings deliver reliability and efficiency, making them a trusted choice for critical applications across diverse industries.















Largest Inventory of Union Fittings that is always In-Stock
Superlok USA stands out as a leading provider of Superlok fittings, maintaining the largest inventory in the United States, ready to ship anywhere nationwide. This extensive stock ensures quick delivery and minimal downtime for customers, making it a significant advantage over competitors like Swagelok®. With Superlok USA's commitment to accessibility and efficiency, businesses can rely on timely solutions for their fluid and gas system needs. This ready-to-ship capability, combined with Superlok's high-quality, cost-effective fittings, positions Superlok USA as a top choice for industries seeking reliable and responsive alternatives to Swagelok® fittings.
Fast Delivery anywhere in the USA
Superlok USA offers a distinct advantage with its fast delivery service across the United States, ensuring customers receive their orders promptly to minimize project delays. Through strategic partnerships with shipping providers, Superlok USA provides special negotiated rates, making their high-quality fittings not only reliable but also cost-effective to transport. This combination of speed and affordability sets Superlok apart from competitors like Swagelok®, where delivery times and shipping costs can be less predictable. For businesses seeking efficient and budget-friendly solutions, Superlok USA’s fast delivery and competitive shipping rates make it a preferred choice for fluid and gas system needs.