Product Description
Product Overview
The FB and AFB series stainless steel corrosion-resistant centrifugal pumps are single-stage, single-suction horizontal pumps made of high-quality stainless steel (1Cr18Ni9Ti). They feature advanced hydraulic design, compact structure, reliable performance, and superior corrosion resistance. The pump and motor are installed on a common base, ensuring smooth operation and easy maintenance. These pumps are suitable for transporting corrosive or clean liquids without solid particles at temperatures below 100°C.
FB / AFB Series Type Designation
Example: 100AFB-37A
100 — Pump inlet diameter (mm)
A — Improved corrosion-resistant design
FB — Stainless steel corrosion-resistant centrifugal pump
37 — Design head (m)
A — Impeller diameter modification code
Structure Description
The pump adopts a horizontal structure with suction inlet at the front and discharge outlet vertically upward. Both pump and motor are mounted on the same base plate. The impeller uses a back-curved design for high efficiency and low axial thrust. Bearings are lubricated by grease or oil, ensuring long service life and smooth operation. The shaft seal adopts a mechanical seal or soft packing seal according to application needs.
Structural Drawing
(Product image)
| No. | Part Name | No. | Part Name |
|---|---|---|---|
| 1 | Pump Casing | 7 | Bearing Housing |
| 2 | Impeller | 8 | Mechanical Seal |
| 3 | Seal Ring | 9 | Coupling |
| 4 | Shaft | 10 | Motor |
| 5 | Cover Plate | 11 | Base Plate |
| 6 | Bearing | 12 | Coupling Guard |
Performance Parameters
The performance curve (page 3 of catalog) shows stable head and flow characteristics across multiple models. The following table lists representative parameters:
| Model | Flow (m³/h) | Head (m) | Speed (r/min) | Power (kW) | Efficiency (%) | NPSHr (m) |
|---|---|---|---|---|---|---|
| 25FB-16 | 3.6 | 16 | 2900 | 0.48 | 41 | 4.0 |
| 40FB-25 | 6.5 | 25 | 2900 | 1.5 | 52 | 3.5 |
| 65FB-40 | 26.2 | 40 | 2900 | 7.5 | 65 | 3.5 |
| 80FB-50 | 54.4 | 50 | 2900 | 15 | 70 | 3.0 |
| 100FB-63 | 100.8 | 63 | 2900 | 22 | 74 | 3.0 |
| 150FB-56 | 173.5 | 56 | 2900 | 37 | 78 | 2.5 |
Performance Curve
(Refer to the flow-head performance chart on page 3, covering full model range from 25FB to 150FB.)
Start, Stop, and Operation
Start-up: Check bearings, seals, and rotation direction. Fill the pump casing with liquid before operation. Ensure inlet and outlet valves are properly adjusted.
During Operation: Maintain stable pressure, monitor vibration and noise, and ensure bearings remain below 75°C.
Shutdown: Close outlet valve first, then stop motor. Drain pump if temperature is below freezing.
Use of Mechanical Seal
Mechanical seals are suitable for clean or slightly contaminated media. Before starting, ensure adequate cooling water flow through seal chamber. Avoid dry running. If leakage occurs, replace worn seal rings immediately. When disassembling, do not scratch the sealing surface. After long-term storage, rotate the shaft manually before restarting.
Failure Causes and Solutions
| Failure | Cause | Solution |
|---|---|---|
| No liquid discharge | Pump not filled, air leakage, high suction lift | Refill liquid, check suction line, lower installation height |
| Low flow | Clogged impeller, suction blockage, air in line | Clean impeller and suction pipe |
| Vibration | Motor-pump misalignment, bent shaft | Re-align shaft, replace if needed |
| Overheating | Overload or bearing damage | Reduce load, replace bearings |
| Seal leakage | High inlet pressure | Lower inlet pressure or adjust valve |
Corrosion Resistance of Stainless Steel 1Cr18Ni9Ti
(Excerpt from page 7 table showing corrosion performance for acids and alkalis)
| Medium | Chemical Formula | Concentration (%) | Temperature (°C) | Resistance Grade |
|---|---|---|---|---|
| Nitric Acid | HNO₃ | 5–100 | Boiling | 1 |
| Acetic Acid | CH₃COOH | 50–100 | 20–Boiling | 1–2 |
| Sodium Hydroxide | NaOH | 20–80 | Boiling | 1 |
| Sulphuric Acid | H₂SO₄ | 40–80 | Boiling | 2–3 |
| Hydrochloric Acid | HCl | 10–20 | Boiling | 3–4 |
Corrosion Resistance Grade
• Grade 1: Excellent resistance (corrosion rate ≤0.1 mm/year)
• Grade 2: Good resistance (0.1–1.0 mm/year)
• Grade 3: Moderate resistance (1.0–3.0 mm/year)
• Grade 4: Limited resistance (3.0–10 mm/year)
Order Information
1. Select model according to medium, temperature, and pressure.
2. Confirm motor power based on specific gravity of medium.
3. When ordering, specify seal type, material, and voltage.
4. Standard accessories include pump, motor, baseplate, and certificate.
5. Custom configurations available upon request.
OEM & Custom Solutions
We provide OEM/ODM customization for voltage (220V/380V/415V), material (304/316L stainless steel), and seal types (mechanical/packing). Optional explosion-proof motors and corrosion-proof coatings are available. All products comply with ISO9001 and CE standards for international export.
FAQs for Oversea Buyers
Q: What’s the main difference between FB and AFB models?
A: AFB is an upgraded version with enhanced hydraulic efficiency and better corrosion resistance.
Q: What type of media can this pump handle?
A: It can transport clean water, weak acids, alkalis, and corrosive liquids without solid particles.
Q: What is the working temperature range?
A: Up to 100°C for standard configuration.
Q: What’s the maximum efficiency?
A: Up to 78% depending on model and flow range.
Q: Can the material be customized?
A: Yes, options include SS304, SS316, or 1Cr18Ni9Ti based on medium corrosion level.
Q: Do you offer OEM labeling and packaging?
A: Yes, customized logos, colors, and export packaging are available.
Q: What certifications are included?
A: ISO9001 and CE certification for all export products.