Grundfos UPS 26-99 FC High-Flow 3-Speed Circulator Pump with Built-In Flow Check, 1x115V, Cast Iron Housing, 8.8m Max Head – Model 52722512

Condition: New – Factory new, unused, and undamaged. Ships in original packaging. No signs of installation or prior use.

The Grundfos UPS 26-99 FC (Part Number 52722512) is a heavy-duty, high-flow circulator pump engineered for hydronic heating systems and other closed-loop circulation applications. Featuring three adjustable speed settings, an integrated flow check valve, and a robust cast iron body, this pump delivers exceptional versatility, performance, and energy efficiency.

Rated for 1x115V operation at 60 Hz, this circulator is ideal for larger residential or light commercial systems. Its compact design (165 mm port-to-port) and 2-bolt flange connections make installation straightforward and compatible with most standard hydronic layouts. UL and CUL listed, the unit includes thermal overload protection and an internally mounted run capacitor.

🔧 Technical Specifications

• Product Name: UPS 26-99 FC
• Product Number: 52722512
• EAN / UPC: 5700834818707
• Rated Voltage: 1 x 115V
• Frequency: 60 Hz
• Speed Settings: 3
• Power Input (Watts):
  • Speed 1: 150 W
  • Speed 2: 179 W
  • Speed 3: 197 W (max)
• Amperage Draw:
  • Speed 1: 1.3 A
  • Speed 2: 1.5 A
  • Speed 3: 1.8 A
• Rated Flow: 4.02 m³/h
• Maximum Flow: 7.5 m³/h
• Rated Head: 5.02 m
• Maximum Head: 8.8 m
• Run Capacitor: 20 µF / 180 V
• Number of Poles: 2
• Insulation Class: F
• Thermal Protection: Internal
• Ex-Protection Standard: CONTACT
• Terminal Box Position: 9H

⚙️ Construction Details

• Pump Housing Material: Cast Iron (EN-GJL-200 / ASTM A48-30B)
• Impeller Material: PES + 30% Glass Fiber (Composite)
• Connection Type: 2-Bolt Flange
• Flange Pressure Rating: PN 10
• Port-to-Port Length: 165 mm (approx. 6.5 in)
• Net Weight: 4.3 kg (9.5 lbs)
• Gross Weight: 4.64 kg

🌡️ Operational Conditions

• Ambient Temp Range: 2°C to 40°C
• Max Ambient Temp (with 80°C liquid): 80°C
• Liquid Temp Range: 2°C to 110°C
• Selected Liquid Temp: 60°C
• Max Operating Pressure: 10 bar
• Pumped Media: Water (or water/glycol mixtures as allowed by Grundfos)
• Media Density (at 60°C): 983.2 kg/m³

✅ Features

• 3-speed control for custom flow performance
• Integrated flow check valve (FC) for simplified installation and backflow prevention
• Quiet operation with internal thermal protection
• Low-maintenance and energy efficient PSC motor design
• Cast iron construction for durability and longevity
• Standard 2-bolt flange mounting
• Designed for closed-loop hydronic heating and cooling systems
• UL / CUL listed
• Compatible with common installation brackets and flange kits

🧩 Applications

• Residential and commercial hydronic heating systems
• Radiant floor heating loops
• Baseboard and panel radiator systems
• Hot water recirculation
• Geothermal loop systems
• Solar thermal systems (closed-loop)

🔁 Cross-Referenced / Equivalent Models

• Grundfos UPS26-99FC (identical variant; label format difference)
• Taco 0014-F1 (similar flow and head range – confirm flange and control specs)
• Bell & Gossett NRF-36 (similar duty point, variable-speed options)
• Armstrong Astro 250CI (heavy-duty 3-speed circulation)

⚠️ Always verify flow/head requirements, flange dimensions, voltage, and wiring before substitution.

🔧 Assembly/Install Notes

• Ships with pre-mounted terminal box
• Use compatible 2-bolt flange sets
• Recommended to pair with dielectric unions on mixed-metal systems
• Pump must be installed with shaft horizontal for proper bearing lubrication
• System should be flushed prior to startup to avoid impeller fouling

📌 Related

• grundfos ups 26-99 fc 3 speed circulator
• 115v cast iron heating pump
• grundfos hydronic pump with flow check
• 52722512 grundfos cast iron pump
• boiler pump 3 speed 1/6 hp
• ups26-99fc circulator with flange

📈 Common Requests:

1. “Does this pump include a flow check?” → Yes, built-in.
2. “Can this be used in radiant heating?” → Yes, ideal for radiant loops.
3. “Is it variable-speed or 3-speed manual?” → Manual 3-speed selection.
4. “What flange size is required?” → Standard 2-bolt hydronic flange.
5. “Can it handle glycol mixtures?” → Yes, if per Grundfos’ allowed ratios.

⚠️ Trademarks Disclaimer

Grundfos® is a registered trademark of Grundfos Holding A/S. All other brand names and trademarks are used for identification purposes only. This listing is not affiliated with or endorsed by Grundfos.

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