ARMSTRONG B4028-1 Float Fnfp

( Brand: Armstrong ), ( Manufacturer Part Number: B4028-1 )

Review ARMSTRONG Float Mechanism Fnfp

The Armstrong International B4028-1 Float FNFP Boiler is a high-performance, commercial-grade heating solution designed for applications requiring ultimate reliability and efficiency. This boiler is part of Armstrong's BC Series, which delivers superior fuel flexibility and easy installation.

The B4028-1 is a floor-standing, cast iron, fire-tube boiler, featuring a working volume of 1,500,000 BTUs and a maximum input of 1,800,000 BTUs. It is designed for use with natural gas, propane, or oil fuels. This boiler's high turndown ratio allows for precise temperature control, ensuring optimal energy utilization and efficient operation.

The boiler's advanced combustion system includes a modulating burner, which adjusts fuel input based on demand, maintaining a consistent water temperature and reducing fuel consumption. Additionally, this boiler features a cast iron heat exchanger for extended durability and superior heat transfer.

The Armstrong B4028-1 comes with a factory-installed float-type feedwater system, providing automatic water make-up, ensuring a constant water level and eliminating the need for manual refills. This boiler is also equipped with a factory-installed flue gas economizer, which preheats the feedwater using the heat from the flue gases, further increasing efficiency and reducing energy costs.

This boiler's compact design, with dimensions of 57 inches in height, 42 inches in width, and 78 inches in length, makes it suitable for various applications, including commercial, institutional, and industrial settings. Its insulated jacket provides excellent thermal efficiency, reducing heat loss and maintaining optimal operating temperatures.

The B4028-1 is ASME-certified and meets the requirements of ANSI and BHRA standards, ensuring the highest level of safety and quality. Additionally, this boiler is equipped with a number of safety features, such as a low water cutoff, pressure relief valve, and high temperature limit switch, providing peace of mind and protecting against potential issues.

This Armstrong International B4028-1 Float FNFP Boiler is a robust and efficient heating solution, delivering reliable performance, excellent fuel flexibility, and superior energy efficiency. Its advanced features, compact design, and easy installation make it an ideal choice for a wide range of commercial and industrial applications.

The Armstrong B4028-1 Floating ANSI FNFP Tankless Water Heater is a popular choice for those seeking energy efficiency and continuous hot water supply. Here are some pros and cons that can help you make an informed decision about purchasing this model:

1. Energy Efficiency: This tankless water heater is energy-efficient as it only heats water when it is needed, unlike traditional tank water heaters that constantly heat and store water.

2. Endless Hot Water: With a tankless design, the Armstrong B4028-1 provides an endless supply of hot water, ensuring that you never run out of hot water, even during peak usage.

3. Compact Size: This water heater has a compact size, making it an excellent choice for homes with limited space. It can be installed on an interior or exterior wall, making installation flexible.

4. Durable Construction: The Armstrong B4028-1 is made of high-quality materials, including stainless steel and copper, which ensure longevity and durability.

5. Easy Installation: The water heater comes with a user-friendly installation process, which can save you time and money.

1. Initial Cost: Tankless water heaters, including the Armstrong B4028-1, have a higher initial cost compared to traditional tank water heaters. However, the energy savings over time can offset the higher upfront cost.

2. Requires Professional Installation: While the installation process is relatively straightforward, it is recommended to have a professional install the water heater to ensure proper functioning and safety.

3. Limited Flow Rate: The Armstrong B4028-1 has a maximum flow rate of 4.5 gallons per minute, which may not be sufficient for households with high hot water demand.

4. Maintenance: Regular maintenance is required to ensure the longevity of the water heater, including descaling and filter replacement.

The Armstrong B4028-1 Floating ANSI FNFP Tankless Water Heater offers several advantages, including energy efficiency, endless hot water, compact size, durable construction, and easy installation. However, it also has some downsides, such as a higher initial cost, the need for professional installation, limited flow rate, and maintenance requirements.

If you have a moderate hot water demand in your household and are looking for a high-performance, energy-efficient water heater, the Armstrong B4028-1 could be an excellent choice. It is essential to consider the pros and cons, including the initial cost and maintenance requirements, before making a final decision.

If you are looking for a reliable, energy-efficient, and compact tankless water heater, the Armstrong B4028-1 Floating ANSI FNFP Tankless Water Heater is a worthwhile consideration. It offers several advantages, including endless hot water, energy savings, and a durable construction. However, it is essential to factor in the higher initial cost and professional installation requirements before making a purchase.

Details:

2-Year MRO Shield Protection Plan Included. Special Instructions. Manufacturer Part Number: B4028-1. Steam Trap Series Repaired: A Series, B.

Armstrong B4028-1 Float Mechanism Manufactured by ARMSTRONG. The product must be the original item shipped, with matching serial numbers if applicable. Armstrong B4028-1 Float Mechanism Float mechanism assembly for 15-A8 and 15-B8 F steam traps with 7/8 inch orifice. A brand-new, unused, unopened, undamaged item in its original packaging where is applicable.

Most items are in stock when they listed. Float: Mechanism sold without float.

part #: b40281 prices

• $150.00-$356.00

specifications oldconstruct:

• brand: Armstrong
• mpn: B4028-1

seller oldconstruct:

• city: Mount Sterling, Kentucky
• rating: 99.7%
• # reviews: 22768

payments oldconstruct:

• other
• credit card: Mastercard
• wallet: Paypal

returns oldconstruct:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days
• method: Money back

shipping oldconstruct:

• cost: $0.00
• service: UPS Ground, UPS Next Day Air
• transit: 4-7 Days
• type: Calculated
• carrier: UPS
• class: Standard, One-day

offer oldconstruct:

• sold: 0
• best offers: True
• started: March 20, 2026
• availability: In Stock
• quantity: 2
• options: Ship-to-home

general oldconstruct:

• condition: New
• Building Materials Supplies > Vintage Construction > Machine Parts Tools

Armstrong B4028-1 Is Similar To:

• Armstrong A5253 Float Fnfp (68.8% similar) The product must be the original item shipped, with matching serial numbers if applicable. Armstrong A5253 float manufactured by Armstrong. Most items are in stock when they listed. A brand-new, unused, unopened, undamaged item in its original packaging where is applicable...(December 22nd, 2025)