Grundfos 559601 Cast Iron 4-Bolt Pump Flange Set, 2-1/2" NPT (Pair)

The Grundfos 559601 is a pair of cast iron 4-bolt pump flanges with 2-1/2" NPT threaded connections, used to connect a flanged circulator to threaded pipe.

Each flange threads onto the pipe and bolts to the pump's 4-bolt flange, so the circulator can be removed for service without cutting the piping. Cast iron flanges are normally used on closed-loop hydronic heating and cooling systems.

Before ordering: confirm that your pump has a 4-bolt flange pattern that matches this 2-1/2" set and that your pipe is 2-1/2" NPT. Check the pump documentation for the correct gaskets and bolts.

Specifications

• Brand: Grundfos
• Manufacturer Part #: 559601
• Type: Pump flange set (pair)
• Size: 2-1/2"
• Connection: NPT (threaded)
• Flange Pattern: 4-bolt
• Material: Cast Iron
• Category: Pump Flanges & Accessories

See also: pump flanges & accessories, all Grundfos products.