Grundfos Circulator Pump Cross-Reference Guide – Bell & Gossett ITT, Taco, Armstrong
Finding the right replacement for your Bell & Gossett ITT, Taco, or Armstrong circulator pump is essential for maintaining efficient HVAC and plumbing systems. Our Grundfos cross-reference chart ensures that you can quickly and easily find the perfect match for your needs. We stock and ship these products worldwide!
Cross-Reference for Grundfos Circulator Pumps
Our detailed cross-reference chart aligns popular Bell & Gossett ITT, Taco, and Armstrong models with their Grundfos equivalents based on port-to-port length and flange size. Here are some of the most commonly replaced models:
- Astro20B1/2S → Grundfos UP15-10B5 (5” Port-to-Port, 1/2” Sweat Connection)
- Astro20B3/4S → Grundfos UP15-10B7 (6-3/8” Port-to-Port, 3/4” Sweat Connection)
- Astro25BU → Grundfos UPS15-35SUC (5-7/8” Port-to-Port, 1-1/4” Union Connection)
- S25B → Grundfos UPS26-99BFC SPD 2 (6-1/2” Port-to-Port, Flange Connection)
- H32B → Grundfos UPS43-44BFC (8-1/2” Port-to-Port, Flange Connection)
Why Choose Grundfos Circulator Pumps?
- Energy Efficient: Designed for optimal performance and reduced energy consumption.
- Reliable Performance: Built with high-quality components for durability and efficiency.
- Easy Installation: Seamless integration into existing plumbing systems.
- Industry-Leading Technology: Advanced engineering ensures superior flow and temperature regulation.
Get Your Replacement Pump Today!
We are committed to providing top-quality Grundfos circulator pumps at competitive prices. Request a Quote now or call us at 1-800-755-2883 for expert assistance in selecting the right pump for your application.
Crossover Reference Chart (PDF)
We stock and ship these products worldwide!
Request a Quote now or call us at 1-800-755-2883 for expert assistance.
| Model | Port to Port Length |
Flange Size/ Connection Type | Grundfos | Port to Port Length |
Flange Size/ Connection Type |
| Astro20B1/2S | 5” | 1/2” Sweat | UP15-10B5 | 5” | 1/2” Sweat |
| Astro20B3/4S | 5” | 3/4” Sweat | UP15-10B7 | 6-3/8” | 3/4” Sweat |
| Astro20BU | 6” | 1-1/4” Union | UP15-29SU | 5-7/8” | 1-1/4” U |
| Astro25B1/2S | 5” | 1/2” Sweat | UP15-18B5 | 5” | 1/2” Sweat |
| Astro25B3/4S | 5” | 3/4” Sweat | UP15-18B7 | 6-3/8” | 3/4” Sweat |
| Astro25BU | 6” | 1-1/4” Union | UPS15-35SUC | 5-7/8” | 1-1/4” U |
| Astro30B | 6-3/8” | Flange – R | UPS15-55SFC | 6-1/2” | Flange |
| Astro50B | 6-3/8” | Flange – R | UPS15-55SFC | 6-1/2” | Flange |
| S25B | 6-1/2” | Flange | UPS26-99BFC SPD 2 | 6-1/2” | Flange |
| H32B | 8-9/16” | Flange – R | UPS43-44BFC | 8-1/2” | Flange |
| Closed Systems: Cast Iron Body Pumps | |||||
| Astro30 | 6-3/8” | Flange-R | UPS15-58FR SPD 1 | 6-1/2” | Flange – R |
| UP15-42FR | 6-1/2” | Flange – R | |||
| Astro50 | 6-3/8” | Flange – R | UPS26-99FC | 6-1/2” | Flange |
| S25 | 6-1/2” | Flange | UPS26-99FC SPD 2 | 6-1/2” | Flange |
| H32 | 8-9/16” | Flange – R | UPS43-44FC | 8-1/2” | Flange |
| S35 | 8-1/2” | 2” Flange – R | UPS50-44F | 8-1/2” | 2” Flange |
| Commercial Pumps | |||||
| ARMflo E7/E7B | 6-3/8” | 1-1/4” | UPS26-99FC/BFC | 6-1/2” | Flange |
| ARMflo E8/E8B | 6-3/8” | 1-1/4” | UPS26-99FC/BFC | 6-1/2” | Flange |
| ARMflo E9/E9B | 6-3/8” | 1-1/4” | UPS26-116F/BF | 6-1/2” | Flange |
| ARMflo E10/E10B | 8-1/2” | 1-1/2” | UPS43-44FC/BFC | 8-1/2” | Flange |
| ARMflo E11 | 8-1/2” | 1-1/2” | |||
| ARMflo E12/E12B | 6-7/16” | 1-1/4” | UPS32-160/2(B) | 13-1/2” | 1-1/2” |
| ARMflo E13 | 8-1/2” | 1-1/2” | UP43-70F | 8-1/2” | 1-1/2” |
| ARMflo E14/E14B | 6-7/16” | 1-1/4” | UPS32-160/2(B) | 13-1/2” | 1-1/2” |
| ARMflo E15/E15B | 8-1/2” | 1-1/4” | UPS32-80/2(B) | 11” | 1-1/2” |
| ARMflo E16/E16B | 8-1/2” | 2” | UPS50-44F/BF | 8-1/2” | 1-1/2” |
| ARMflo E17/E17B | 8-1/2” | 1-1/4” | UPS32-160/2(B) | 13-1/2” | 1-1/2” |
| ARMflo E18/E18B | 8-1/2” | 2” | |||
| ARMflo E19/E19B | 8-1/2” | 1-1/2” | UP43-70F/BF | 8-1/2” | 1-1/2” |
| ARMflo E21 | 8-1/2” | 1-1/2” | UP43-110F | 8-1/2” | 1-1/2” |
| ARMflo E22/E22B | 8-1/2” | 1-1/2” | UP43-110F/BF | 11-1/2” | 1-1/2” |
| ARMflo E23 | 8-1/2” | 1-1/2” | UP43-110F | 8-1/2” | 1-1/2” |
| S 45/45B | 10” | 2-1/2” to 3” | UP53-45F/BF | 9-7/8” | 2” to 3” |
| S 46/46B | 10” | 2-1/2” to 3” | UP53-46F/BF | 9-7/8” | 2” to 3” |
| S 55/55B | 12” | 3” | UP53-55/57F(BF) | 11-7/8” | 2” to 3” |
| S 57/57B | 12” | 3” | UP53-55/57F(BF) | 11-7/8” | 2” to 3” |
| S 69/69B | 14-1/4” | 3” | UPS75-69F/BF | 14” | 2” to 3” |
| H 51/51B | 11-1/2” | 1” | UPS32-80/2 (B) | 11” | 2” to 3” |
| H 52/52B | 11-1/2” | 1” | UPS32-80/2 (B) | 11” | 3/4” to 1-1/2” |
| H 53/53B | 11-1/2” | 1-1/2” | UPS40-160/2 (B) | 11-1/2” | 1-1/2” |
| H 54/54B | 11-1/2” | 2” | UPS50-80/2 (B) | 11-1/2” | 2-1/2” |
| H 63/63B | 13-1/2” | 1-1/2” | UPS32-160/2 (B) | 13-1/2” | 1-1/2” |
| H 64/64B | 13-1/2” | 1-1/2” | UPS32-160/2 (B) | 13-1/2” | 1-1/2” |
| H 65/65B | 13-1/2” | 1-1/2” | UPS40-240/2 (B) | 13-1/2” | 1-1/2” |
| H 66/66B | 14” | 2” | UPS50-160/2 (B) | 14” | 2” |
| H 67/67B | 14” | 2” | UPS50-160/2 (B) | 14” | 2” |
| H 68/68B | 14” | 2” | UPS50-240/2 (B) | 14” | 2” |
| 1050 1B (1/4 HP)/AB | 11-1/2” | 2” | UPS32-80/2 (B) | 11” | 3/4” to 1-1/2” |
| 1050 1-1/4B (1/4 HP)/AB | 11-1/2” | 1” | UPS32-80/2 (B) | 11” | 3/4” to 1-1/2” |
| 1050 1-1/2B (1/4 HP)/AB | 11-1/2” | 1-1/2” | UPS32-80/2 (B) | 11” | 3/4” to 1-1/2” |
| 1050 2B (1/3 HP)/AB | 11-1/2” | 2” | UPS50-80/4 (B) | 11-1/2” | 2” |
| 1050 2B (1/2 HP)/AB | 11-1/2” | 2” | UPS50-80/4 (B) | 11-1/2” | 2” |
| 1050 2B (3/4 HP)/AB | 11-1/2” | 2” | UPS50-80/4 (B) | 11-1/2” | 2” |
| 1060 1-1/2D (1/2 HP)/AB | 13-1/2” | 1-1/2” | UPS32-160/2 (B) | 13-1/2” | 1-1/2” |
| 1060 1-1/2D (3/4 HP)/AB | 13-1/2” | 1-1/2” | UPS32-160/2 (B) | 13-1/2” | 1-1/2” |
| 1060 1-1/2D (1-1/2HP)/AB | 13-1/2” | 1-1/2” | UPS40-240/2 (B) | 13-1/2” | 1-1/2” |
| 1060 2D (3/4 HP)/AB | 14” | 2” | UPS50-160/2 (B) | 14” | 2” |
| 1060 2D (1 HP)/AB | 14” | 2” | UPS50-160/2 (B) | 14” | 2” |
| 1060 2D (1-1/2 HP)/AB | 14” | 2” | UPS50-160/2 (B) | 14” | 2” |
| 1060 2D (2 HP) /AB | 14” | 2” | UPS50-240/2(B) | 14” | 2” |