Dielectric Union

Dielectric Union – Corrosion-Resistant Fittings for Plumbing & HVAC Systems

Tembo Dielectric Unions are precision-engineered pipe fittings designed to prevent galvanic corrosion when joining dissimilar metals like copper and galvanized steel. These specialized connectors are essential in hot water systems, HVAC lines, and industrial piping setups, ensuring safe, long-lasting performance.

What is a Dielectric Union?

A dielectric union is a pipe fitting that combines metal components separated by a non-conductive insulator to block electrical current and prevent corrosion. Commonly used in water heaters and plumbing systems, these unions ensure a secure and corrosion-free transition between different metal pipes.

Key Features of Tembo Dielectric Unions

Prevents galvanic corrosion between copper, brass, and steel
High-grade EPDM or plastic insulator between metals
Available in brass-to-steel and copper-to-galvanized configurations
Designed for high-pressure and high-temperature environments
Easy installation and removal for maintenance
Conforms to ASTM and IS standards

Available Sizes & Specifications

Tembo offers dielectric unions in the following options:

- Sizes: ½”, ¾”, 1”, 1¼”, 1½”, 2”
- End types: Threaded (NPT/BSPT), sweat (solder), and compression
- Materials: Brass, galvanized iron, stainless steel
- Max. Pressure: Up to 300 PSI
- Temperature Range: -20°C to 120°C

Applications of Dielectric Unions

Tembo dielectric unions are ideal for:

Water heaters and boilers
HVAC system installations
Domestic and commercial plumbing
Chillers and cooling towers
Industrial piping and heat exchangers

They are particularly critical when copper pipes are connected to galvanized steel to prevent premature failure due to corrosion.

Why Choose Tembo Dielectric Unions?

ISO-certified manufacturing processes
Precision machined threads for leak-free sealing
Superior insulating performance
Durable under harsh water and temperature conditions
Available for bulk supply and OEM partnerships