HP Technik NVBHRG-DC Fuel Oil Pump

HP Technik NVBHRG-DC Fuel Oil Pump

The HP Technik NVBHRG-DC Fuel Oil Pump is a precisely manufactured internal gear pump for heavy-duty marine, industrial combustion and fuel transfer systems. This unit is designed for reliable operation under continuous-duty conditions and includes an integral overflow relief valve and bypass arrangement for accurate pressure control and protection of downstream pipeline components. The NVBHRG-DC version is manufactured to the highest standards of German engineering and provides superb volumetric efficiency for light to medium viscosity petroleum liquids, diesel or heavy fuel oils.

Model Details

• Manufacturer: HP Technik
• Series: NV (High-Pressure Internal Gear Design)
• Model Configuration: NVBHRG-DC
• MPN (Manufacturer Part Number): NVBHRG-DC-4-10

Technical Specifications: NVBHRG-DC-4-10

Main features

1. Integrated Overflow Valve: Internal bypass feature protects system components from over pressurization and allows fine control of discharge pressure.
2. High Volumetric Efficiency: Optimized internal gear shape avoids slide even while handling low viscosity fuels at elevated temperatures.
3. Heavy-Duty Marine-Grade Construction: Corrosion-resistant exterior shell and hardened internal gear rotors for extended service life in demanding saline environments.
4. Low Noise Profile: Close tolerance machined tooth contact lowers fluidborne noise and mechanical vibration during operation.
5. Flexible Mounting Orientation: Coupled directly to conventional IEC frame electric motors using custom brackets or integrated block designs.

Applications

• Auxiliary and booster fuel modules for marine diesel engines
• Thermal fluid heating boilers and industrial oil burners
• Fuel Supply and Transfer Arrangements for Standby Generator
• Lubrication of machine tools and circulating cooling lubricants
• Heavy fuel oil (HFO) and gas oil processing skids

Compatible Equipment Models & Cross-References

• Compatible Burner Brands: Saacke, Weishaupt, Riello, and industrial auxiliary boiler systems utilizing positive displacement gear pumps.
• Part Number Cross-References: HP Technik NV series equivalents, legacy 41100 series designations, and corresponding internal gear alternatives matching displacement footprints.

Marine Engineer’s Expert Guide

Expert Installation Advice When installing the HP Technik NVBHRG-DC pump on shipboard fuel systems, a primary suction-line strainer (max 250 mesh / 60 micron) should be placed upstream to protect the precision-honed internal gears from particulate scoring. Before performing first dry-run checks, verify that the bypass valve cap is set to the right system pressure setpoint.

Maintenance Tip: When operating with Heavy Fuel Oil (HFO), always follow the manufacturer’s recommendations for electrical pre-heating choices to make sure the oil viscosity is reduced to the optimal operational threshold before motor startup. Do not operate this positive displacement pump against a closed discharge valve for more than a few seconds to prevent heat shock and catastrophic seal breakage.

Frequently Asked Questions

What types of media can the HP Technik NVBHRG-DC pump handle?

The pump is engineered for clean or slightly contaminated petroleum-based media, including light diesel, marine gas oil (MGO), lubricating oils, and preheated heavy fuel oil (HFO), provided proper viscosity parameters are met.

Is the internal bypass valve adjustable?

Yes, the integrated overflow and bypass valve allows operators to manually adjust the maximum discharge pressure ceiling to align with specific burner or engine supply specifications.

Can this pump run in reverse rotation?

Standard configurations of the NVBHRG series have a fixed rotation direction optimized for peak volumetric efficiency. Check the casing arrow indicator prior to electrical hookup to avoid damaging the internal mechanical seal.