Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Fuel Oil Pumps - Suction Capacities

Single stage and double stage fuel oil pumps and their suction capacities.

The limitation of a fuel oil pump feeding a burner may often be the suction side. With higher suction lift the "vacuum" in the suction line will evaporate the light fractions of the fuel oil - and the pump starts to choke.

In general there are two types of fuel feeding pumps

  • single stage pumps
  • double stage pumps

A single stage pump consist of only one set of pumping gears and the lift capacity is limited compared to the two stage fuel pump with double set of pumping gears.

  • a single-stage pump is suited for low-level lifts up to 5 - 10 inches of vacuum
  • a two-stage pump is suited for medium-level lifts up to 10 - 15 inches of vacuum

Higher "vacuum" levels requires use of separate lifting pumps and dedicated feeding reservoirs to the fuel pumps.  

The total "vacuum" in a fuel oil suction line can roughly be estimated to

  • 1 inch of vacuum for each foot of lift
  • 1 inch of vacuum for each 90o elbow
  • 1 inch for each 10 feet of 3/8 inch horizontal suction pipe
  • 1 inch for each 20 feet of 3/8 inch horizontal suction pipe

Related Topics

  • Combustion

    Combustion processes and their efficiency. Boiler house and chimney topics. Properties of fuels like oil, gas, coal and wood and more. Safety valves and tanks.

Related Documents

Search

Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .

Citation

This page can be cited as

  • The Engineering ToolBox (2008). Fuel Oil Pumps - Suction Capacities. [online] Available at: https://www.engineeringtoolbox.com/fuel-oil-pumps-d_1022.html [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































4.19.9

.