Danfoss Fuel Pump Bfp21L3 Diamond Series 071N7156

Danfoss 071N7156 BFP21L3 Pump Grant SBS50 HRM BS052A was 071N0156 Pressure adjuster at rear

The Danfoss BFP21L3 (071N7156) is a Diamond Series oil pump engineered for high reliability, long service life, and precise fuel delivery in domestic oil-fired heating systems. Using diamond-like carbon (DLC) technology, this pump offers superior wear resistance and low friction performance, making it one of the most durable burner pumps on the market.

Designed for kerosene and light oil, the BFP21L3 provides stable fuel pressure, smooth operation, and fast shut-off, ensuring clean and efficient combustion across a wide range of Diamond-series compatible burners.

Key Features
• Genuine Danfoss BFP21L3 – Part No. 071N7156
• Diamond Series – diamond-like carbon technology for extended lifespan
• Suitable for kerosene and light oil heating systems
• Left-hand nozzle/pressure outlet (L type)
• 1-pipe operation with cut-off closing function
• High-performance ring-type filter with 11 cm² surface area
• Ensures stable, precise fuel pressure for efficient combustion
• Durable, low-friction internal components for reduced wear
• Ideal for domestic oil burners and service replacements

Compatibility
Suitable for:
• Diamond Series oil burner systems requiring BFP21L3
• A wide range of domestic burners matching the same specification
• Can replace earlier BFP21L3 pumps with identical orientation and voltage
(If you want a full model-by-model list, just ask.)

When to Replace
• Inconsistent or low fuel delivery
• Burner lockouts or unstable flame
• Mechanical noise or pump leakage
• During routine burner servicing for optimal efficiency
• When upgrading older / non-Diamond pumps