80 P 4176 Oil Pump BPF 21L5: Buyer's Guide for Singapore Industry
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The 80 P 4176 Oil pump BPF 21L5 is a part-number reference for a Suntec light-oil burner pump used on pressure-jet burners in boilers, furnaces and industrial heaters. In Singapore, buyers typically replace it with a current Suntec two-stage pump such as the B-4000, B-8000 or B-8800, matched on flow, pressure and rotation.
What is the 80 P 4176 Oil pump BPF 21L5?
A burner oil pump is a positive-displacement gear pump that draws light oil from a tank, pressurises it to atomising pressure and delivers it to the nozzle. The 80 P 4176 / BPF 21L5 code is a legacy Suntec reference; current equivalents are specified by flow, pressure and rotation rather than the old number.
Suntec is the OEM most often named for this class of pump, and its B-series two-stage pumps are the standard replacement family in Singapore boiler rooms and F&B plants.
Quotable definition
A burner oil pump is a two-stage gear pump that lifts light oil from a storage tank, pressurises it to the nozzle atomising pressure (typically 8–25 bar) and provides a safety cut-off when the burner stops. It is the heart of any pressure-jet oil firing system.
How does a two-stage oil pump work?
The first gear set sucks oil from the line and the second gear set pressurises it to nozzle pressure. A by-pass plug and solenoid valve control one-pipe or two-pipe operation and provide hydraulic safety cut-on/cut-off.
According to Suntec B-8000B datasheet, Ed. 3, November 2024: "The first stage gear set sucks the fuel from the line, and the second stage gear set pressurizes the fuel."
Spec table: typical 80 P 4176 / BPF 21L5 class values
| Parameter | Typical value | Notes |
|---|---|---|
| Pump type | Two-stage gear pump | Light oil (diesel/kerosene) |
| Outlet pressure | 8–25 bar | Set at nozzle |
| Inlet lift | Up to 0.4 bar vacuum | Single-pipe lift capacity |
| Drive | 230 V / 50 Hz or 400 V / 50 Hz | Singapore supply |
| Rotation | Clockwise or anti-clockwise | Match burner motor |
| Pipe connection | 1/4 in BSP | Standard burner port |
| Safety | Hydraulic cut-on/cut-off | Solenoid or speed device |
Which Suntec pump type suits your burner?
Choose one-step pumps for fixed-output burners and two-step pumps where the burner must modulate between high and low fire. In Singapore, two-stage one-step pumps dominate packaged boilers and F&B fryers, while two-step pumps appear on modulating process heaters.
- One-step, two-stage: fixed firing rate, simple control, common on small boilers.
- Two-step, two-stage: high/low fire, modulating burners, larger plant.
- Single-stage: light duty, small heaters, low pressure.
Selection criteria
- Nozzle pressure: confirm the burner's required atomising pressure in bar before ordering.
- Flow rate: match pump capacity to nozzle size and firing rate in kg/h.
- Rotation: check motor rotation direction; wrong rotation damages the pump.
- Pipe arrangement: one-pipe or two-pipe; by-pass plug must match.
- Environment: Singapore's humid tropical climate demands corrosion-resistant housings and IP-rated terminals.
- Compliance: confirm burner and fuel system meet EMA and WSH requirements for the site.
Product selection ladder
| Model | Type | Best for |
|---|---|---|
| Suntec PUMP B-4000 Two-stage One-step Pump | Two-stage, one-step | Small packaged boilers, light duty |
| Suntec PUMP B-8000 Two-stage One-step Pump | Two-stage, one-step | Medium boilers, high single-pipe lift |
| Suntec PUMP B-8800 Two-stage Two-step Pump | Two-stage, two-step | Modulating burners, heavy duty |
Step up from B-4000 to B-8000 when single-pipe lift or flow demand rises. Move to B-8800 when the burner needs two-mode pressure operation and solenoid control.
Why source from 3G Electric in Singapore?
3G Electric stocks 34+ related products and brings 35+ years of industrial supply experience across combustion, pumps and controls. We interpret your demand, confirm the right pump and deliver fast from Singapore stock, with technical support for sizing and installation.
FAQ
Q: Can I replace 80 P 4176 BPF 21L5 with a Suntec B-8000?
A: Often yes, if flow, pressure and rotation match. The B-8000 is a two-stage one-step pump with high single-pipe lift. Confirm nozzle pressure and pipe arrangement before ordering.
Q: What voltage do these pumps use in Singapore?
A: Burner motors are typically 230 V/50 Hz single-phase or 400 V/50 Hz three-phase. Confirm the motor nameplate before selecting a pump.
Q: How fast is delivery in Singapore?
A: 3G Electric ships from local stock, usually within days for standard Suntec pumps. Contact us for current lead times.
Q: One-step vs two-step pump — which do I need?
A: One-step suits fixed firing rate; two-step suits modulating burners needing high/low fire. Match to your burner controller.
Q: Where to buy 80 P 4176 Oil pump BPF 21L5 in Singapore?
A: 3G Electric supplies Suntec two-stage pumps and equivalents. Send your burner details for a quote.
Key takeaways
- 80 P 4176 BPF 21L5 is a legacy Suntec light-oil burner pump reference.
- Match pressure, flow, rotation and pipe arrangement before replacing.
- Suntec B-4000, B-8000 and B-8800 cover light to heavy duty.
- 3G Electric offers local stock, technical support and fast Singapore delivery.
CTA: Contact 3G Electric for quotes, sizing assistance and technical support on the 80 P 4176 Oil pump BPF 21L5 and Suntec replacements.
