Valve Identification

[Berenger]

Can anyone help me out with the valve id? Working on a project and came across this valve symbol. This is the first time I'm seeing this type of valve.

Thank you.

Berenger.

 

[Latexman]

Was there only one, or a bunch of them?

Good luck,
Latexman

 

[Berenger]

There were 2 of them on the pipeline to each inlet receiver...and one from the inlet receivers to the separators. Is it possible that they're check valves?

 

[Latexman]

I've never seen this before. The arrow line is not symmetrical. If there was only one I'd say it's a ball valve symbol with an extraneous arrowed line, i.e. a mistake. Course with grouping and copy / paste error can be propagated very easily.

Track down previous Engineers and draftspeople from the unit/drawing.

Good luck,
Latexman

 

[TD2K]

It's new to me also, I've never seen a check valve done like that.

 

[Latexman]

If it is a P&ID of an existing unit, check it out in the field and let us know.

Good luck,
Latexman

 

[europipe]

A combined valve/checkvalve maybe?

 

[Berenger]

It is actually a new p&id of a gas plant that I am working on. I did ask around and was told that it's a block valve with an isolation kit for corrosion control. Thanks to everyone who responded.

 

[MortenA]

Thats not a very obvious symbol imo. I think i would prefer a "special piping item" ID or something like that. If the valve needs service the kit may have to be replaced and care should be taken to have them in stock. Just my 2 cents. Hopefully you already thought of that.

Best regards

Morten

 

[racookpe1978]

Is it one of those special ball check valves: The kind that the millwrights forget to put the flapper pin back inside of during re-assembly?

A spring-loaded check valve "might" be drawn that way, but I 've seen that symbol in power plants.

 

[bcd]

I was thinking of two possible valve types. One is a ball with internal check valve as mentioned previously. The other possible option was a ball valve with a hole drilled through one side of the ball to avoid internal cavity pressure. For either case, the symbol is close, but not what I would normally see for either of these types of valves. Is it possible the arrow was distorted in the image when it was cut and pasted onto the diagram?