Approved ...
Grundfos Pumps Corp.'s Comfort Series Instant Hot Water Recirculation System
Grundfos Pumps Corp.'s Comfort Series Instant Hot Water Recirculation System received ANSI / NSF Standard 61 and International Association of Plumbing and Mechanical Officials (IAPMO) safety certifications. The ANSI / NSF Standard 61 establishes guidelines for determining whether contaminants or other impurities are imparted indirectly into drinking water from the product being tested.