Product Overview
The Bell & Gossett 172760LF is a rugged, end-suction centrifugal pump from the industry-standard Series 60 line, built for continuous-duty operation in commercial hydronic systems. This model, part of the 623T series, is powered by a 1 Horsepower motor and is engineered to efficiently circulate hot water, chilled water, and condenser water in mid-sized HVAC applications, industrial processes, and institutional buildings.
Featuring a heavy-duty cast iron casing, a corrosion-resistant bronze impeller, and a long-life mechanical seal, this pump is designed for maximum durability and minimal maintenance. The “LF” designation indicates a Long Frame base, offering enhanced stability and shaft support for reliable performance. As a close-coupled unit, it arrives as a complete, pre-assembled package, ensuring a straightforward installation that saves time and reduces labor costs.
When you need dependable circulation for a boiler system, cooling loop, or other critical hydronic application, the Bell & Gossett 172760LF delivers the proven performance and quality that mechanical engineers and contractors have trusted for decades.
📚 Technical Resources & Guides
Technical Specifications
| Specification Category | Detail |
|---|---|
| Manufacturer Part Number | 172760LF |
| Series | Bell & Gossett Series 60 |
| Model Frame | 623T |
| Motor HP | 1 HP |
| Motor Speed | 1750 RPM |
| Voltage/Phase | 208-230/460V, 3-Phase (Confirm specific voltage) |
| Connection Size (Flange) | 2″ x 1-1/2″ |
| Connection Type | Flanged (Standard 125# FLG) |
| Maximum Working Pressure | 175 PSI / 12.1 Bar |
| Maximum Temperature | 250°F / 121°C |
| Construction – Casing | Cast Iron |
| Construction – Impeller | Bronze |
| Construction – Shaft | Steel, Stainless Steel Sleeve |
| Seal Type | Mechanical Seal |
| Frame | Long Frame (LF) |
| Rotation | Clockwise (Viewed from motor end) |
What’s Included
| Included | Not Included / Required Separately |
|---|---|
| ✓ Complete Close-Coupled Pump & Motor Assembly | ✗ Circuit Breaker or Starter (Electrical Disconnect) |
| ✓ Flanged Suction & Discharge Connections | ✗ Isolation Valves & Strainer |
| ✓ Mechanical Seal | ✗ Flexible Connectors |
| ✓ Baseplate | ✗ Motor Starter (Recommended for 3-Phase motors) |
🛠️ Recommended for a Complete Installation
-
Isolation: Bell & Gossett Flanged Isolation Valves
-
Protection: Y-Strainer for Hydronic Systems
-
Control: Square D 3-Phase Motor Starter
Comparison Table: Series 60 vs. Alternative Pumps
| Feature | Bell & Gossett Series 60 623T | Standard Residential Circulator | Basic Industrial Pump |
|---|---|---|---|
| Application | Commercial HVAC, Industrial Hydronics | Residential Heating | General Purpose, Transfer |
| Construction | Cast Iron, Bronze Impeller (Durable) | Often All-Iron or Composite | Varies |
| Serviceability | Excellent (Standardized parts, easy repair) | Often “Throw-Away” Unit | Moderate |
| Motor | NEMA Standard, 3-Phase (Efficient) | Small, Single-Phase | Often TEFC, Single or 3-Phase |
| Pressure/Temp Rating | High (175 PSI, 250°F) | Low ( typically < 100 PSI) | Moderate |
| Ideal For | Heating/Cooling Loops, Boiler Feed | Baseboard Heat, Domestic Hot Water | Water Transfer, Irrigation |
Frequently Asked Questions (FAQs)
Q1: Is this pump suitable for both open and closed-loop systems?
A: Yes, the Bell & Gossett Series 60 is designed for both open and closed hydronic systems. However, for open systems (like cooling tower service), it is critical to ensure the system has a properly sized suction strainer to protect the pump from debris.
Q2: What does “Close-Coupled” mean?
A: A close-coupled pump has the impeller mounted directly on the extended motor shaft. This design is compact and rigid, eliminating the need for alignment between separate pump and motor bearings. The “Long Frame” (LF) base provides additional stability for this configuration.
Q3: This is a 3-phase pump. Can I use it with single-phase power?
A: No. The motor is wound for 3-phase operation only. Attempting to run it on single-phase power will damage the motor. You must have a 3-phase power supply or use a phase converter. For single-phase applications, you would need to select a different model.
Q4: What maintenance does this pump require?
A: Primary maintenance involves periodically checking for unusual noise or vibration, ensuring the motor bearings are lubricated (if applicable), and monitoring the mechanical seal for leaks. The seal is a wear item and will eventually need replacement.
Q5: How do I select the right pump for my system’s flow and head requirements?
A: Pump selection should be based on your system’s calculated flow rate (in GPM) and total dynamic head (in feet). You must consult the pump performance curve for the 172760LF model to ensure its operating range matches your system’s requirements. Oversizing or undersizing a pump leads to inefficiency and premature failure.
Internal Link: Our guide on How to Read a Pump Curve will help you verify this is the correct model for your application.
Pros and Cons
| Pros | Cons |
|---|---|
| Proven Reliability & Durability: Industry-standard construction for long service life. | 3-Phase Power Required: Not compatible with standard residential single-phase power. |
| Commercial-Grade Components: Bronze impeller and mechanical seal ensure longevity. | Higher Initial Cost: More expensive than residential-grade circulators. |
| Easy Serviceability: Standardized parts are widely available for maintenance and repair. | Heavyweight: Cast iron construction makes it significantly heavier than composite pumps. |
| Long Frame Base: Provides superior stability and reduces strain on connections. | Requires System Knowledge: Proper sizing and installation are critical for optimal performance. |
| Brand Reputation: Bell & Gossett is a leader in hydronic systems with extensive support. |
Conclusion & Ideal Use Case
The Bell & Gossett 172760LF Series 60 pump is a workhorse engineered for demanding commercial and industrial applications where failure is not an option. It represents a professional-grade solution for critical water circulation.
This pump is perfectly suited for:
-
Commercial Building HVAC Systems (Chilled and Hot Water Circulation)
-
Boiler Feed and Condensate Return Applications
-
Industrial Process Cooling Loops
-
Condenser Water Pumps for Cooling Towers
-
Replacement for existing Series 60 pumps in institutional settings.
If you require a durable, efficient, and serviceable pump for a 3-phase hydronic system, this Bell & Gossett model is a benchmark of quality.
🔗 Official Technical Resource
For the official pump performance curves, dimensional drawings, and installation manuals, always refer to the Bell & Gossett eProduct Catalog for the most accurate and up-to-date technical data.
.
