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

Normally Open (NO)

Valves and the term Normally Open

Sponsored Links

The term Normally Open (NO) applies to manual valves or dampers which the operator must leave open in normal operation.

A control valve that should go to an open position on a control signal failure should be labeled FO, i.e. Fail Open. The control signal may be pneumatic, hydraulic or electric.

Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: normally open no
Sponsored Links

Search 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 the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!

Citation

This page can be cited as

  • Engineering ToolBox, (2005). Normally Open (NO). [online] Available at: https://www.engineeringtoolbox.com/normally-open-d_880.html [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

. .

close

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!

Scientific Online Calculator

Scientific Calculator

9 21

Sponsored Links
.