Product Overview
The Grundfos 519601 is a cast iron flange set for compatible VersaFlo UP and UPS circulator pumps that use the GF15/26 connection standard. The flanges provide a threaded transition between the circulator and 3/4 in. NPT system piping, creating a removable connection for installation, replacement, and future pump service.
The set includes two cast iron flanges, two gaskets, and two bolts with nuts. Because circulator families can use different flange patterns and body materials, confirm the exact pump model, GF15/26 connection, pipe size, and intended system fluid before ordering. Cast iron components are commonly selected for closed hydronic systems rather than potable-water circulation unless the complete installation documentation specifically permits that use.
Key Features:
- GF15/26 cast iron flange set
- 3/4 in. NPT pipe connections
- For compatible VersaFlo UP and UPS circulators
- Threaded connection design
- Gaskets and mounting hardware included
Common Uses:
- Hydronic heating circulator installation
- Replacing compatible cast iron pump flanges
- Creating serviceable circulator connections
Technical Specifications:
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Part Number: 519601
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Flange Standard: GF15/26
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Pipe Connection: 3/4 in. NPT
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Material: Cast iron
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Included: Two flanges, two gaskets, and two bolts with nuts
Compatibility and Installation Notes:
Confirm the Grundfos pump model, flange spacing, system material, fluid, pressure, and temperature. Install new gaskets and tighten the hardware evenly to avoid stressing the pump body.
FAQ:
What pump connection standard is used?
This set is identified for compatible GF15/26 circulator connections.
Is installation hardware included?
Yes. The set includes two gaskets and two bolts with nuts.
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.
