Symbol required for a car-sealed ball valve

[Doglegs]

Need direction on where I can find the symbol for a car-sealed ball valve.

 

[pennpoint]

Doglegs
I'm sorry! "CAR-SEALED ball valve" not cap-sealed or somthing like that?

pennpoint

 

[TD2K]

We just put CSC and CSO beside the valve, we don't use a specific symbol.

 

[MortenA]

I second TD2K - thats what i have seen the most places.

Pennpoint: Car sealed means that the hvalve handled has been "locked" using a "seal". Today this would most commenly be a plastic strip but also old-fashioned wire and actual sealing wax can be used.

Best Regards

Morten

 

[hacksaw]

the usual symbol is "CSO" or "CSC"


carsealing is different from actual locking of the valve

 

[pennpoint]

MortenA
Ah, Very good!
Thanks for the definition, I can almost imagine where the term came from too.

Regards
pennpoint

 

[phex]

There was a thread on the origins for this expressions in one of the fora here, I think it was the "Engineering Language/Grammar Skill" Forum. I can't seem to find it and due to that forgot who exactly pointed this out, but apparently it comes from former times, when equipment has been delivered by railroad and the railroad cars have been sealed to ensure noone has tampered with this equipment. Hence, the expression "car-sealed" to indicate the valve MAY be operated, but not so without being noticed.

 

[Montemayor]

The thread(s) phex is trying to remember is:

thread124-103512

Art Montemayor
Spring, TX

 

[phex]

Who else but Montemayor could have explained that? I could have guessed. So, belatedly but not too late I hope, thanks Montemayor for another scrap of information that stuck to me.

chris

 

[jsummerfield]

Use CSO, CSC, LO or LC and show on the legend sheet.

John

 

[ProPiper]

CSO/CSC are different with LO/LC. The former uses wire and lead seal to limit operations to valve, people can break the seal in emergency situation. The latter uses chain and lock --- can't operate the valve until get the key.