When are you required to use a fire safe valve?  

The purpose of a fire-safe valve is to prevent or hinder flammabel fluid (liquid or gas or gases formed from liqid phase)to pass, at least for a given time and at least during that periode not in critical amounts, a closed valve during overheating of the pipeline , caused by fire or similar events.

When you should use a firesafe valve is given by a sensible risk analysis. When you are required to use one is dependent on any rules, regulations and laws concering the special process, plant, pipeline, vessel or contraption you have.

In addition to this comes the regulations given by the protection of surroundings or requirements from for instance your insurance company.

Check if firesafe tested type or only firesafe design without test of actual type is required.

A firsafe valve does not necessarily need to be much higer in price than a good non-firesafe for the same purpose.

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