MEP Family guru needed - quick question

[mdhutchinson]

Out of 62 Part Types available in Family Editor - two of them look to relate to Valves.

1. Valve - Breaks Into
2. Valve - Normal

When would these be used - and what is the difference?

Shouldn't this valve be one of these - which one?

[Secttor]

@mdhutchinson  - your equipment can be set as breaks-into in order to cut the pipe and place the valve in that part of the pipe. The continuity of that pipe segment is restored after removing the equipment. Setting it as normal would react as any other.  Your sample should be set as normal as long as it stays at the end of the pipe segment.

[mdhutchinson]

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@Secttor wrote:

@mdhutchinson  - your equipment can be set as breaks-into in order to cut the pipe and place the valve in that part of the pipe. The continuity of that pipe segment is restored after removing the equipment. Setting it as normal would react as any other.  Your sample should be set as normal as long as it stays at the end of the pipe segment.

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So, there is no premise/use for using Valve - Normal, instead of simply Normal. Wouldn't it still function correctly at the end of the pipe if Part Type was set to Valve - Normal?

The reason I ask is that I am working on Valve Tag Dynamo solution... and so am wanting to Classify the Valves using this Part Type Parameter.  

[Secttor · Accepted solution]

@mdhutchinson  - Part type values depend to the family category. So our "worry"now is related to Normal vs. Valve-Normal behavior for Pipe Accessories Category. 

Normal = Pressure drops are calculated for the individual pipe segments.

Valve-Normal = Attaches to the end of the pipe. If a pipe is connected to a secondary pipe accessory connector, that pipe will be seen as another pipe segment. In that case, pressure drops are calculated for the individual pipe segments using predefined K-factor tables.