Install Instructions

GRUNDFOS INSTRUCTIONS
US Installation and operating instructions
Dielectric Isolation Valve (Patent Pending)
Description
The Dielectric Isolation Valve (DIV) is a pump mounting flange attached to an isolation
valve. The Dielectric Isolation sleeve provided by this product prevents dissimilar metal
corrosion (galvanic corrosion).
Caution: Use of the Dielectric Isolation Valves listed above with any
circulators not possessing the specific sealing surface shown below will result
in a failure to seal. It is the responsibility of the purchaser/consumer to ensure
the compatibility of the circulator with which the Dielectric Isolation Valve will
be connected. While all Grundfos GF15/26 flanged circulators meet these
requirements, some competitive pump models do not. Warranties are void if
the product is installed or used in a manner inconsistent with Grundfos'
written recommendations, specifications, or instructions. For further
information or questions, please contact Grundfos Partner Services.
Operational Limits
Max temperature 230°F (110°C)
Max Pressure 150 psi (10 Bar)
3.0”
1-1/2” (38mm)
1-19/64” (33 mm)
Pump Donut Gasket Groove
Flange
Side View
Flange
End View
Dielectric Isolation Valve Flat Gasket Sealing Surface Requirements
I.D. Max.: 1-19/64” (33 mm) O.D. Min.: 1-1/2” (38 mm)
Pump
Flange