Product Overview
The Grundfos 519651 is a bronze flange set for connecting compatible Grundfos UP and UPS circulator pumps to 3/4 in. threaded piping. A matched flange pair creates serviceable pipe connections on both sides of the pump, allowing the circulator to be installed, removed, or replaced without fabricating an improvised mounting arrangement.
The kit includes two bronze flanges, two gaskets, and four bolts with nuts. Compatibility depends on the pump's flange pattern, port size, connection style, and system fluid. Confirm the complete Grundfos pump model and connection dimensions before ordering, especially when replacing older hardware or adapting an existing circulator installation.
Key Features:
- Bronze circulator flange set
- 3/4 in. threaded pipe connection
- For compatible Grundfos UP and UPS pumps
- Includes matched gaskets and installation hardware
- Supports pump removal and service
Common Uses:
- Installing a compatible Grundfos circulator
- Replacing worn or corroded pump flanges
- Servicing hydronic or hot-water circulation piping
Technical Specifications:
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Part Number: 519651
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Product Type: Bronze flange set
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Pipe Connection: 3/4 in. threaded
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Included: Two flanges, two gaskets, and four bolts with nuts
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Pump Compatibility: Confirm for the specific Grundfos UP or UPS circulator
Compatibility and Installation Notes:
Verify the pump flange pattern, port size, system material, fluid, pressure, and temperature before installation. Replace damaged gaskets and tighten the flange hardware evenly according to the pump instructions.
FAQ:
Are gaskets and bolts included?
Yes. The confirmed product data lists two gaskets and four bolts with nuts.
Will this fit every Grundfos circulator?
No. Confirm the exact UP or UPS pump model and flange pattern.
Why Buy From Big Frog Supply?
Big Frog Supply provides clear product information, helpful support, and convenient online ordering for circulator pumps and installation hardware.
