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The E.2 Pump-Less Volute (PLV) is designed to upgrade, renew or replace all working parts of all models in the E Series family of circulators. The E.2 Series are energy-efficient, Dry Motor circulators designed for a wide range of applications. They include a permanently lubricated mechanical seal that can be replaced quickly and easily. Featuring improved durability and enhanced protection against leakage and water damage to electrical components, the key design elements of the E.2 Series include new water slinger to protect motor against water intrusion; larger, stainless steel shaft; sealed, permanently lubricated bearings; and bellows-style mechanical seal with silicon carbide wear surfaces. Because the new E.2 PLV Kits are also compatible with the original E series, it is now possible to upgrade the older series to the latest E.2 Series technology.