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

# Oil Pipes - Pressure Loss vs. Oil Flow

## Pressure drop in oil pipes - viscosities ranging 100 - 600 Saybolt Universal Seconds.

Oil pipe pressure drops in pounds per square inch (psi) per 100 ft pipe are indicated in the diagrams below. Oil viscosity is ranging 100 - 600 Saybolt Universal Seconds.

### NPS 1/2"

• Inside Diameter 0.622 inches

• 1 gal (US)/min =6.30888x10-5 m3/s = 0.227 m3/h = 0.06309 dm3(liter)/s = 2.228x10-3 ft3/s = 0.1337 ft3/min = 0.8327 Imperial gal (UK)/min
• 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 62oF (16.7oC) = 2.0416 in mercury at 62oF (16.7oC) = 51.8 mm mercury at 62oF (16.7oC) = 703.6 kg/m2 = 0.06895 atm = 2.307 Ft. H2O = 16 ounces
• 1 ft (foot) = 0.3048 m

### NPS 3/4"

• Inside Diameter 0.824 inches

### NPS 1"

• Inside Diameter 1.05 inches

### NPS 1 1/2"

• Inside Diameter 1.61 inches

### NPS 2"

• Inside Diameter 2.067 inches

### NPS 4"

• Inside Diameter 4.026 inches

### NPS 6"

• Inside Diameter 6.065 inches

### NPS 8"

• Inside Diameter 8.03 inches

## Related Topics

• ### Fluid Flow and Pressure Loss in Pipes and Tubes

Fluid flow and pressure loss in pipe lines. Water and sewer systems. Steel pipes, pvc pipes, copper tubes and more.

## Related Documents

• ### Engine & Gear Oil - Recommended Viscosity vs. Outside Temperature

Oil viscosity vs. temperature.
• ### ISO Grade Oils - Viscosities and Densities

Viscosities and densities of ISO - and equivalent SAE grade oils.
• ### Liquids - Kinematic Viscosities

Kinematic viscosities of some common liquids like motor oil, diesel fuel, peanut oil and many more.
• ### Oil Fuels - Viscosities vs. Temperature

Viscosities of fuel oils vs. temperature.
• ### Oil Pipes - Head Loss

Head or pressure loss due to friction in oil pipes - various viscosity and laminar flow.
• ### Oil Pipes - Recommended Flow Velocities

Oil pipes flow velocities should be kept within certain limits.
• ### Oils - Melting points

Common oils from animals or plants and their melting points.
• ### SAE Multigrade Oils - Viscosities and Densities

Viscosities and densities of SAE Grade oils.
• ### Viscosity - Absolute (Dynamic) vs. Kinematic

Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic.
• ### Viscosity - Converting Chart

Convert between viscosity units like Centiposes, milliPascal, CentiStokes and SSU.

## Search

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

## Engineering ToolBox - SketchUp Extension - Online 3D modeling!

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 !

About the Engineering ToolBox!

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

• The Engineering ToolBox (2008). Oil Pipes - Pressure Loss vs. Oil Flow. [online] Available at: https://www.engineeringtoolbox.com/pressure-loss-oil-pipes-d_1176.html [Accessed Day Month Year].

Modify the access date according your visit.

6.3.17

.