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This Valve will be on Pig Receiver side. 1. The Option is to provide two 22" Ball Valve with a bleed between 2. Review and confirm if one valve can function as DBB. All I have in hand is Valve GA and to provide the correct answer I need to know the type of seat.

Hi all Could you please check and advise which type of seat is indicated? DPE or SPE and can we use such type of seat valve as a DBB/DIB as a single valve?https://files.engineering.com/getfile.aspx?folder=158b36e9-aa4b-493e-b91d-d709d52f6366&file=type_of_seat.jpg

Honestly saying I have never seen such kind of configuration before. Also taking into consideration that cast and forged material strength are not the same I consider is not practicable. Could you please advise any reference link to back up such options?

RF 600Cl, trunnion-mounted ball valve. At this stage, there is no drawing. They say: 3 piece valve with Cast body and Forged ends. Is it normal practice? I have never faced before

I would like to purchase 14" Trunnion mounted Ball Valve, Metal seated, FB. for Low temp service. Manufacture offered 1 casted piece(body) and 2 forged pieces(ends). Honestly saying this is new to me. As I know body is supposed to be the same material ( I mean Forged or Cast but not combined)...

Thanks for answer

Good day, all. As you know API6D has its valve face-to-face dimension table also ASME B16.10 also has. Question: When we should refer to these standards to identify the face-to-face dimension? Can we use API 6D with ASME B16.10 dimension? Please share your notes Regards

Thanks to all for assisstance !

What about seat type (SPE or DPE)

What type of valve can be used instead of a Monoblock DBB(one body, 2 balls)valve. In other words is there any option to use Ball, Gate, Plug valves with function of DBB?

Dear Valve specialists Could you please advise which type of valve can be used as DBB function for 4"? But not monoblock DBB valve. Other word: 1 ball, 2 seats Regards