Dielectric Unions Manufacturers

Straight Dielectric Unions, Reducing Dielectric Unions, Flanged Dielectric Unions, Custom Dielectric Unions, Threaded Dielectric Union, Grooved Dielectric Union, Welded Dielectric Union, Compact Dielectric Union Manufacturer

Metalfed Engineering is a trusted name in the global market as a leading manufacturer, supplier, and exporter of high-quality Dielectric Unions. Designed for durability and performance, our dielectric unions are engineered to prevent galvanic corrosion in piping systems, ensuring long-term reliability and safety.

Our Dielectric Unions are manufactured using premium-grade materials and advanced technologies to meet the diverse needs of industries worldwide. With a commitment to excellence, we provide customized solutions to customers in over 30 countries, including the USA, New Zealand, Indonesia, Singapore, Malaysia, and many others.

Carbon Steel, Stainless Steel (304, 316, 316L), Brass, Copper Steel Dielectric Unions Suppliers and Exporters

What is a Dielectric Union?

A Dielectric Union is a specialized pipe fitting used to join two different metals, typically copper and steel, while preventing electrical currents from passing through the connection. This separation minimizes galvanic corrosion, a common issue when dissimilar metals are in contact with each other in a conductive medium.

Key Features

• Corrosion Prevention: Effectively isolates dissimilar metals to prevent galvanic corrosion.
• Durable Construction: Made from high-quality materials for long-lasting performance.
• Easy Installation: Designed for quick and hassle-free installation.
• Wide Compatibility: Suitable for various piping systems and applications.
• Leak-Proof Design: Ensures a secure and tight seal to prevent leaks.

Types of Dielectric Unions

1. Straight Dielectric Unions: Ideal for standard piping connections where two dissimilar metals need to be joined without electrical conductivity.
2. Reducing Dielectric Unions: Designed to connect pipes of different diameters while maintaining the dielectric barrier.
3. Flanged Dielectric Unions: Suitable for applications requiring easy assembly and disassembly, often used in high-pressure systems.
4. Custom Dielectric Unions: Tailored solutions for unique industrial requirements, ensuring optimal performance in specific environments.
5. Threaded Dielectric Union: Features threaded ends for easy installation in threaded piping systems. Ideal for residential and commercial plumbing systems. It is available in Brass, stainless steel, or carbon steel body with nylon or PTFE insulating gasket.
6. Grooved Dielectric Union: Features grooved ends for quick and easy installation using grooved couplings. Suitable for fire protection systems and HVAC systems. Its available in Ductile iron or stainless steel body with rubber gaskets.
7. Welded Dielectric Union: Designed for welding directly into the piping system for a permanent connection. Used in high-temperature and high-pressure industrial applications. Its available carbon steel or stainless steel body with PTFE insulating gasket.
8. Compact Dielectric Union: A smaller, lightweight version designed for tight spaces. Ideal for residential plumbing and small-scale industrial applications. Its available in Brass or stainless steel body with nylon insulating gasket.

Specifications of Dielectric Unions

• Sizes: 1/8” to 4” (custom sizes available upon request)
• Pressure Rating: 150 PSI to 300 PSI (depending on size and material)
• Temperature Range: -20°C to +120°C (-4°F to 248°F)-(depending on material)
• Thread Standards: NPT, BSP, BSPT
• Compliance: ASTM, ASME, ANSI, DIN, EN, JIS, ISO standards
• Coating Options: Zinc-plated, black oxide, or customized coatings

Materials of Dielectric Unions

Our Dielectric Unions are available in a wide range of materials to suit various applications and environments:

1. Body Materials:
   • Carbon Steel
   • Stainless Steel (304, 316, 316L)
   • Brass
   • Copper
2. Insulating Materials:
   • Nylon
   • Polyethylene (PE)
   • Polypropylene (PP)
   • Teflon (PTFE)
3. Seal Materials:
   • EPDM
   • Nitrile Rubber (NBR)
   • Silicone

Dielectric Unions Dimensions

Applications of Dielectric Unions

Dielectric Unions are widely used across various industries, including:

• Plumbing Systems: To connect steel pipes with copper pipes in residential and commercial applications.
• HVAC Systems: Ensuring corrosion-free connections in heating, ventilation, and air conditioning systems.
• Oil and Gas: For piping connections in offshore and onshore operations.
• Water Treatment Plants: Preventing galvanic corrosion in pipelines carrying water and chemicals.
• Chemical Processing: For use in pipelines with aggressive or reactive media.

Top Export Countries:

USA, New Zealand, Indonesia, Singapore, Malaysia, Philippines, Vietnam, Thailand, Oman, UAE, Saudi Arabia, Jordan, Egypt, South Africa, Ghana, Nigeria, Chile, Peru, Burma (Myanmar), Sri Lanka, Tajikistan, Kyrgyzstan, Uzbekistan, Kazakhstan, Turkmenistan, Bhutan, Laos, Nepal, Maldives, and more.

Uses and Benefits of Dielectric Unions:

Uses:

• Prevents electrical conductivity between dissimilar metals.
• Ensures reliable and durable piping connections.
• Reduces maintenance and repair costs by minimizing corrosion.
• Compatible with both industrial and residential piping systems.

Benefits:

• Corrosion Resistance: Prevents galvanic corrosion, extending the lifespan of pipelines.
• Leak-proof Design: High-quality seals ensure no leakage, even under high pressures.
• Versatile Applications: Suitable for a wide range of industries and environments.
• Ease of Installation: Compact and lightweight design simplifies installation.
• Cost-Effective: Reduces downtime and replacement costs, offering long-term value.