Product Description
Armstrong 4280 3x2x10 Motor Mounted Pump
Series 4280 | Size 3x2x10 | Horizontal End Suction | 60 Hz
The Armstrong 4280 3x2x10 is a horizontal end-suction pump with a close-coupled motor for HVAC-system pumping and light industrial or process pumping. It has a 3" suction, a 2" discharge and a 10" nominal size. Like every 4280, it is built to minimize footprint, with a sintered silicon carbide seal seat, a confined casing gasket and pre-lubricated, sealed ball bearings.
This is the 60 Hz model. Casing and impeller materials, motor size and impeller trim vary by configuration. Send us your flow, head, motor and voltage requirements, or the Armstrong model number from your nameplate, and Canadian Pump Shop will confirm the right 3x2x10 for you. The model submittal below has the performance curves and dimensions.
Benefits & Features
Best-in-class design
- ANSI style centerline discharge casing eliminates casing vapor lock
- Sintered silicon carbide mechanical seal seat for longer life
- Confined casing gasket eliminates blow-outs
- Pre-lubricated and sealed ball bearings: simply pipe, align, wire and start
- Motor feet mounting only needed with over-hung casing
- Compact design
Low energy consumption
- High-efficiency NEMA-premium motors reduce energy consumption and cost
- All motors are suitable for inverter-fed service
Low operating risk and cost
- Universal replacement seals, bearings and motors available locally worldwide
- ANSI-style centerline discharge casing eliminates air binding
- Pre-lubricated and sealed ball bearings eliminate lubrication requirements
Specifications
| Manufacturer | Armstrong Fluid Technology |
|---|---|
| Series / Model | 4280 / 3x2x10 |
| Frequency | 60 Hz |
| Suction Size | 3" |
| Discharge Size | 2" |
| Nominal Size | 10 |
| Pump Type | Horizontal end-suction (ES), close-coupled motor |
| Applications | HVAC-system pumping; light industrial / process pumping |
| Casing Material Options | Cast iron, ductile iron or bronze |
| Impeller Material Options | Cast iron or bronze |
| Seal Configuration | Inside single-spring mechanical seal, sintered silicon carbide seat |
| Motor | NEMA-premium efficiency, suitable for inverter-fed service |
| Max Temperature (series) | 250°F (121°C) |
| 4280 Series Range | Up to 2,000 USgpm (125 L/s), up to 400 ft (120 m) head, 0.33 to 60 HP |
Design & Submittals
- 4280 Motor Mounted Pump 3x2x10, 60Hz Submittal (PDF)
- 4280 Motor Mounted Pumps Brochure (PDF)
- 4280 Motor Mounted Pumps Typical Specifications (DOC)
Warranty
Armstrong pumps are covered by Armstrong's standard terms of sale and warranty. Review the full terms below for coverage details.
Installation, Maintenance, Genuine Parts & Parts Kits
- 4280 Motor Mounted Pump Installation & Operating Instructions (PDF)
- 4280 Motor Mounted Pump Service Work Instructions (PDF)
- Mechanical Seal Kits Service Work Instructions (PDF)
- Shaft Sleeve and Spacer Replacement Instructions, 6042.25 (PDF)
- Pump FlushLine Hose & Hardware Kits Instructions (PDF)
- 4280 "S" Replacement Parts, 7/8" impeller bore, 1-1/4" seal (PDF)
- 4280 "M" Replacement Parts, 1-1/4" impeller bore, 1-5/8" seal (PDF)
Always use genuine Armstrong parts, including seals, bearings and parts kits, to keep your 4280 performing to specification.
Please note: Motors and accessories vary by configuration. Not sure which seal kit or replacement parts you need for your 4280 3x2x10? Contact Canadian Pump Shop and we'll help match them to your system.