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

Heating Systems - Safety Valves Size vs. Boiler Power

Safety valves with boilers ranging 275 to 1500 kW.

Sponsored Links

Fired pressure vessels shall be fitted with safety relieving devices with sufficient capacity to relieve all vapor that may be generated in the vessels during normal operation. The safety relieving devices shall be fitted with proper controls to ensure safe operation.

Heating Systems - Safety Valves vs. Boiler Power
Boiler rating
(kW)
Minimum clear bore
of safety valves and vents
(mm)
275 1 x 20
350 1 x 25
440 1 x 32
530 1 x 40
880 2 x 40
1500 80 to 150

Note! Check domestic regulations - Safety Valve Standards

  • 1 kW = 3412 Btu/h
  • 1 inch = 25.4 mm

Safety valves should be removed at least once each year for inspection and cleaning of any deposits that might affect their operation.

To eliminate the necessity of shutting the system down for the inspection, a three-way stop valve may be installed under 2 safety valves, each with the required relieving capacity, installed so that both safety valves cannot be closed off from the vaporizer at the same time. Alternatively may 2 or more separate safety valves be installed with individual shutoff valves, in which case the shutoff valve stems is mechanically interconnected in a manner that allow full required flow capacity at all times.

Sponsored Links

Related Topics

  • Heating

    Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more.
  • Pressure Ratings

    Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more.
  • Valve Standards

    International standards for valves in piping systems.

Related Documents

Sponsored Links

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

Citation

This page can be cited as

  • The Engineering ToolBox (2003). Heating Systems - Safety Valves Size vs. Boiler Power . [online] Available at: https://www.engineeringtoolbox.com/heating-systems-safety-valves-d_193.html [Accessed Day Month Year].

Modify the access date according your visit.

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!

Unit Converter

















































9.19.12

Sponsored Links
.