What is BS 5070-3 – Recommendations for mechanical/fluid flow diagrams about? 
BS 5070 is a British Standard that discusses best industry practices for engineering diagram drawings.
BS 5070-3 is the third part of the series that discusses the use and benefits of mechanical/fluid flow diagrams during drawing engineering diagrams.
BS 5070-3 gives recommendations for the practice to be followed in preparing mechanical, process and fluid flow diagrams. It covers all aspects of diagram representation except the choice of symbols for particular components; this is the subject of BS 1553 and other relevant standards giving symbols for specific industrial use.
BS 5070-3 should always be used in conjunction with BS 5070-1 and the relevant symbol standards when preparing mechanical, process and fluid flow diagrams.
Other parts of BS 5070 give recommendations and specific definitions that are appropriate to particular engineering disciplines.
Who is BS 5070-3 - Recommendations for mechanical/fluid flow diagrams for? 
BS 5070-3 on mechanical/fluid flow diagrams in engineering diagram drawing is relevant to: 
- Engineers
- Architects
- Product designers
- Technical experts
- Independent design agencies and consultancies
Why should you use BS BS 5070-3 - Recommendations for mechanical/fluid flow diagrams?
Engineering diagrams are used to convey technical information about an object. They can fully and clearly define the requirements of an engineered item, thus communicating what is required, wanted and needed to enable resources to be expended to turn an idea into reality.
BS 5070-3-compliant block diagrams show the essentials of an installation in sufficient block outline to indicate the main design features.
BS 5070-3-compliant flow diagram depicts all the essential parts of a process or item of equipment which enables the analysis and calculation of physical characteristics to be undertaken. These are so arranged to show the operation as clearly as possible without regard to physical layout of the items, their parts or connections.
Thus, BS 5070-3 can help you in understanding engineered equipment and the liquid flow of current through its circuit. Thereby, incidents of product failures can be avoided. Moreover, this assessment can make a positive contribution to your product development initiatives.
