Clearflow fittings protect your plumbing system through an exclusive steel-to-plastic design that establishes an effective dielectric waterway. The Clearflow line of dielectric fittings separates dissimilar metals in the electrolyte (waterway) eliminating the local galvanic cell. In addition, Clearflow 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, example phone systems and appliances. Clearflow fittings are designed to meet the requirements of ASTM standard F-1545 for continuous use at temperatures up to 225 deg F and for pressures up to 300 psi, and will achieve a dielectric waterway in all potable water and appropriate HVAC applications. Clearflow is listed by IAPMO/UPC and SBCCI PST and ESI.