2 replies to this topic

[kybele39]

Hello All,

I was wondering if a bleed ring symbol should be shown on a P&ID drawing for PSV's?

Thanks,
Kybele

[fallah]

kybele,

What do you mean by "bleed ring"?

Fallah

[kybele39]

Fallah,

Some companies requests a bleed ring which is a kind of flange with a tab on it and instead of using double block and bleed valve system they use this ring and it is connected to a valve to bleed the downstream or upstream line before maintain PSVs. This is my understanding from bleed ring. I belive it should be shown on P&ID's because it substitute the B&B valve system.

Thanks,
Kybele