Description
Product Overview
For critical applications demanding maximum corrosion resistance in a compact package, the Armstrong E24.2B ARMflo Bronze Circulating Pump delivers exceptional performance and durability. This rugged 1/12 HP circulator features an all-bronze liquid end, making it the definitive choice for domestic water recirculation, coastal installations, marine applications, and any environment where standard cast iron pumps would succumb to corrosive elements.
The pump utilizes Armstrong’s efficient wet-rotor design, ensuring quiet operation and minimal energy consumption while eliminating the need for routine lubrication. Its compact, inline configuration allows for easy installation in tight spaces, and the bronze construction provides superior protection against rust and corrosion, significantly extending service life in challenging conditions. For guidance on selecting the right pump for tough environments, read our blog on [Corrosion-Resistant Pumps for Demanding Applications].
As part of Armstrong’s respected ARMflo series, this pump combines premium materials with proven hydraulic performance. Whether you’re maintaining a domestic hot water loop in a commercial building, circulating water in a marine application, or ensuring reliable operation in a high-humidity environment, the E24.2B is engineered to provide years of trouble-free service. Learn more about its advantages in our article [The Critical Role of Material Selection in Pump Longevity].
Technical Specifications
| Specification | Details |
|---|---|
| Model | Armstrong E24.2B ARMflo (182212-654) |
| Motor Power | 1/12 HP (0.06 kW) |
| Connection Size | 1″ FIPT x 1″ FIPT |
| Impeller Material | Bronze |
| Housing Material | Bronze |
| Max Head | 13 ft (4.0 m) |
| Max Flow | 25 US gpm (95 L/min) |
| Speed Settings | Single Speed |
| Max Operating Pressure | 125 psi (8.6 bar) |
| Max Fluid Temperature | 230°F (110°C) |
| Voltage | 115V, 1-Phase |
| NPSH Required | 1.5 ft (0.46 m) |
| Sound Level | < 55 dBA |
Comparison Table: Armstrong Bronze ARMflo vs. Alternative Pumps
| Feature | Armstrong E24.2B Bronze ARMflo | Standard Cast Iron Circulator | Competitor Bronze Pump |
|---|---|---|---|
| Liquid End Material | All-Bronze Construction | Cast Iron/Bronze Impeller | Bronze |
| Corrosion Resistance | Excellent | Good | Excellent |
| Application Suitability | Domestic Water, Marine, Coastal | Closed-Loop Heating Only | Domestic Water, Corrosive |
| Size & Weight | Compact, Medium Weight | Varies | Varies |
| Installation | Inline, Easy Installation | Inline | Inline |
| Value Proposition | Long Life in Corrosive Environments | Cost-Effective for Clean Systems | Similar Premium |
Frequently Asked Questions (FAQs)
Q1: What applications require a bronze circulating pump like the E24.2B?
This bronze pump is essential for domestic potable water recirculation systems, coastal buildings with salt-laden air, marine applications, swimming pool systems, and facilities with aggressive water chemistry where cast iron pumps would quickly corrode.
Q2: Is this pump approved for potable water systems?
Yes, the all-bronze construction makes the E24.2B suitable for domestic hot and cold water recirculation systems. The materials are safe for potable water contact, unlike cast iron pumps which are restricted to closed-loop applications only.
Q3: How does the wet-rotor design benefit this application?
The wet-rotor design provides maintenance-free operation since the rotor is lubricated and cooled by the system fluid. This eliminates the need for periodic lubrication and reduces maintenance requirements, making it ideal for hard-to-access installations.
Q4: Can this pump be used in both heating and domestic water applications?
While its bronze construction makes it perfect for domestic water, it can technically be used in heating systems. However, for standard hydronic heating applications without corrosion concerns, a cast iron model like the [Armstrong Cast Iron Circulator Series] provides similar performance at a lower cost.
Q5: What maintenance does this bronze circulator require?
The pump is essentially maintenance-free thanks to its wet-rotor design. The primary maintenance involves ensuring clean system water to prevent seal damage and occasionally checking for unusual noises or vibrations. The bronze construction eliminates corrosion-related maintenance concerns.
Pros and Cons
| Pros | Cons |
|---|---|
| Excellent Corrosion Resistance for long service life | Higher Initial Cost than equivalent cast iron models |
| Potable Water Approved for domestic water systems | Lower Flow/Head Capacity compared to larger circulators |
| Maintenance-Free Operation with wet-rotor design | Single-Speed Operation limits performance adjustment |
| Compact Size for easy installation in tight spaces | Premium Price Point for specialized applications |
| Quiet Operation ideal for residential and light commercial use | Limited to Specific Applications where bronze is necessary |
| Energy Efficient design reduces operating costs |
Conclusion & Ideal Use Cases
The Armstrong E24.2B ARMflo Bronze Circulating Pump represents the optimal solution for small to medium applications where corrosion resistance and material compatibility are paramount. While requiring a higher initial investment than standard circulators, its all-bronze construction ensures reliable performance in environments that would quickly degrade ordinary pumps.
This bronze circulator is ideally specified for:
-
Domestic Water Recirculation: Hot water return lines in commercial and residential buildings
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Coastal Installations: Buildings near oceanfront or saltwater environments
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Marine Applications: Boat water systems and marine installations
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Swimming Pool Systems: Heater circulation and water feature pumps
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Laboratory & Medical Facilities: Where water purity and material compatibility are critical
For larger domestic water applications, consider the [Armstrong E40 Series Bronze Circulator], while for standard hydronic heating in non-corrosive environments, the [Armstrong Cast Iron Circulator Series] offers better value. The E24.2B fills a critical niche for small-scale applications requiring the superior corrosion resistance of bronze construction. For material compatibility standards, consult the NSF International website for drinking water system components (External Link).
Contact our technical specialists today to determine if your application requires bronze construction and for assistance in selecting the right pump for your specific system requirements.
