3/4" NPT Bronze Pump Unions Set, GU125 (1-1/4" Union) Grundfos
3/4" NPT Bronze Pump Unions Set, GU125 (1-1/4" Union) Grundfos
3/4" NPT Bronze Pump Unions Set, GU125 (1-1/4" Union) Grundfos
3/4" NPT Bronze Pump Unions Set, GU125 (1-1/4" Union)
Brand: Grundfos
Part#: 529912
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$39.95 / each
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Grundfos 529912 - Pair of Grundfos 3/4" NPT (Threaded) Bronze Unions GU125.
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Verified Purchase
Easy installation
Had to sweat last two pumps in. Now will be easier in the future
Size: 1/2" Sweat
By RIchard (from Albuquerque, NM) on 03/05/2025
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Verified Purchase
Recirculating
Did the job
Size: 3/4" Threaded
By John (from Jackson township, NJ) on 11/28/2024
Helpful? Yes No
Excellent quality
Great way to easily install the pump.
Size: 3/4" Threaded
By Jesse (from Phoenix, AZ) on 11/04/2011
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What is the pipe diameter that each end of the union fits to?
Helpful? Yes No
These unions are designed to fit specifically the union outlets on any of the Grundfos pumps with "BU" or "SU" in the model number (except UP15-10SU7P/TLC). Union size is 1-1/4".
By PexUniverse Customer Service on 05/10/2017
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