Dielectric Unions

Dielectric unions protect the plumbing system via a steel-to-plastic design that establishes an effective dielectric waterway by interrupting the continuity of electrical current and assisting in the prevention of pipe failure that may result when dissimilar metals are connected.

Smith Dielectric Unions feature:

• Interrupt continuity of electrical current between dissimilar metals
• Provide protection for the plumbing system
• Available in three models for flexible installations

950 Dielectric fittings protect your plumbing system through an exclusive steel-to-plastic design that establishes an effective dielectric waterway. The 950 Dielectric fittings separates dissimilar metals in the electrolyte (waterway) eliminating the local galvanic cell. In addition, 950 Dielectric fittings metal-to-metal joint design maintains external electrical continuity, thereby preventing stray current corrosion. This feature becomes critical when stray current is present due to intentional or non-intentional grounding of direct current (DC) sources, e.g. phone systems and appliances. 950 Dielectric fittings are designed to meet the requirements of ASTM standard F-1545 for continuous use at temperatures up to 225°F (-/+5°F) and for pressures up to 300 psi, and will achieve a dielectric waterway in all potable water and appropriate HVAC applications. The wetted surface of the product contacted by consumable water contributes less than one percent of lead by weight.