I was very confused with these two terminology and nobody was explain properly. Your video made everything clear to me. Thank you very much for such awesome explanation.
I did noticed the seat design for SPE and DPE is different, which i can see that is where the Oring and spring are placed. That will allow pressure to goes into cavity and seals the downstream seat.
Very useful video. Im planning to issue paper about valve functionality with reference of API 6D however im not sure if u have to get approval from API ( im gonna describe DIB and DBB). Hence please advise if got any approval from API to publish this valuable video.
Very helpful videos.. can you arrange the same videos for flanged also. Like there types code and standards, where and why we use individual type of flange.
Guys i've a generic question about valves production: when a valve requires o-rings, lip seals or other seals in specific areas of the valve (like on the seat rings or between two parts in order to prevent leakage) are they usually engineered by the same manufacturer that engineers the valve parts or by others? Then, if the seals are engineered by others(that i think happens in the majority of the cases) do the real manufacturers of the valve re-make the FEA about the body parts plus the seals to check the entire integrity of the valves in static/dynamic/fatigue analysis? What is the real work flow?
Nice video Sir. I have a question: how do I identify the flowdireciton on the valve nameplate? I have checked some of them and I don't see any arrow or something.
Very clear and simple explanation .very useful .Can you also take one topic about why some manufacturer drilling relief hole on ball on cryo application .
Thank you for your support.Most cryogenic ball valve size are smaller than 10" so most of them will use floating ball structure to design the valve.Floating ball valve the valve seat can't move by the cavity pressure. So the best way to relief the cavity pressure is drilling a hole on the ball.
Thanks for your support. That is good topic. Before I try to make a video talk about two kind of valve seat (SPE DPE)design. But it's hard to make a shot video to explain this subject very simply and clearly. AS you ask I will try to make a video talk about this in recently.
This is wrong you inverse between bi-directional and uni-directional, bi directional suppose to used spe seat design, so on this case if PB > PA it shall relieve the cavity pressure, note "bi" on bidirectional means if cavity pressure bigger than upstream pressure it can move both ways, in the same direction with upstream or opposite (depend on which side you put the spe seat)
Thank you for your explanation i have question about type DIB (BID Direction ) , from where will cavity pressure will come if both seats is very sealed?
I know there is the thermal impact from hot medium application. In fact no seat is super tight it means after a time medium gets into the cavity room. I assume the valve the cavity room is atm pressure and when I have a high design pressure, the thermal impact (sun solar) is not an issue, when we are NOT in a hot medium application. (for eg.: natural gas temp range +5 - 40°C ) My question is, when the risk of cavity pressure is quite low, is the DIB-1 the best prefferd solution???
Other than API 6D what is the other documents in which wall description with figures are shown of { SPE & DPE } i need that document can anyone help pls???
This topic always confused even some senior engineers. I read the code again and again and gave up and here is the best explanation. Great Job
This is BY FAR the best explanation on the internet. This video makes these concepts very easy to understand. Thank you.
I was very confused with these two terminology and nobody was explain properly. Your video made everything clear to me. Thank you very much for such awesome explanation.
No one has explained this topic as clearly as you did. Thank you so much.
Best explanation for DBB and DIB ever made
Explained perfectly.. like all your videos.. this is one of the least understood & most confusing area in ball valves..
Most clear explanation I've heard
Well explained Stephen .Thanks on behalf of all those who have gained from you !
Can you help me with the document in which SPE and DPE is explained with figures i am unable to find it
I agree, the best explanation ever
Well done it’s really Amazing video which is simplifying the process
Thanks stephen for clearly explaining
Excellent explanation for SPE&DPE ,thank
fantastic and very detail explanation.......
I did noticed the seat design for SPE and DPE is different, which i can see that is where the Oring and spring are placed. That will allow pressure to goes into cavity and seals the downstream seat.
Can you help me with the document in which SPE and DPE is explained with figures i am unable to find it
Very very amazing explanation video
Wow great video!
superb explanation !..... it gives more information about dbb and dib
Thanks a lot.. 👍👍great explaination
Very useful video. Im planning to issue paper about valve functionality with reference of API 6D however im not sure if u have to get approval from API ( im gonna describe DIB and DBB). Hence please advise if got any approval from API to publish this valuable video.
thanks brother... crystal clear
Very good explanation👍
Really simple explanation on SPE & DPE seats
Thank you for your support.
Nice explanation about SPE and DPE . .
Mr. Stephen Could you please explain about control valves working functions..
Well explained. Thanks for sharing...can u shared video based on control valve selection and sizing
Thank you.
thanks for the Video - greetings from ITALY.
Can you help me with the document in which SPE and DPE is explained with figures i am unable to find it
Very helpful videos.. can you arrange the same videos for flanged also. Like there types code and standards, where and why we use individual type of flange.
thankyou so much brother / sir
👍👍
great explanation - thank you
Excellent .. Can u explain how to decide the test required for valve material and final test after assembly?
Really great explaination 👍
Hi your video is wonderful can you give full form of SPE ,DPE ,DBB,DIB
Great explanation! Thank you!
great job, You made it easy to understand. 😍
Thanks a lot for clear explanation..
Superb explanation! Thanks!
You're really cool man.
Well explained. Thanks
Nice explanation
Mr. Stephen Could you please explain about X-Mass Tree valves and working functions..
Codes and Standards involved in this area
Guys i've a generic question about valves production: when a valve requires o-rings, lip seals or other seals in specific areas of the valve (like on the seat rings or between two parts in order to prevent leakage) are they usually engineered by the same manufacturer that engineers the valve parts or by others?
Then, if the seals are engineered by others(that i think happens in the majority of the cases) do the real manufacturers of the valve re-make the FEA about the body parts plus the seals to check the entire integrity of the valves in static/dynamic/fatigue analysis? What is the real work flow?
Nice video Sir. I have a question: how do I identify the flowdireciton on the valve nameplate? I have checked some of them and I don't see any arrow or something.
Very clear and simple explanation .very useful .Can you also take one topic about why some manufacturer drilling relief hole on ball on cryo application .
Thank you for your support.Most cryogenic ball valve size are smaller than 10" so most of them will use floating ball structure to design the valve.Floating ball valve the valve seat can't move by the cavity pressure. So the best way to relief the cavity pressure is drilling a hole on the ball.
ok thank you
Such nice and clear explanation .. Thank you very much for uploading
Thanks for your support
Nice sir
Great video and very helpful!
Thank you for your very good explanation
Good job mate...
Hello sir, do u got any forum where a healthy discussion could happen? This video was very helpful.
That was clear and helpful.
Thank you very much.
Thank you for your support.
Thank you , This is great
When first seat fail in dpe the pressure in cavity with time will be very high , and may be dangerous, what is the solutions?
great explanation..
Very helpful video, thanks !
Great video...pls can you explain the seat arrangement (oring) by how the Bidirectional sealing is achieved in DPE seat...
Thanks for your support.
That is good topic. Before I try to make a video talk about two kind of valve seat (SPE DPE)design. But it's hard to make a shot video to explain this subject very simply and clearly.
AS you ask I will try to make a video talk about this in recently.
Yes I agree...Complicated topic that was misunderstood for a long time...explained very simply
Well explanation!
Explained very well
its a good video, very useful
If DIB 2 has no disadvantages then oil and gas industry specifications use only DIB 2 design , but still specs are asking DBB design ..why ??
Thanks
This is wrong you inverse between bi-directional and uni-directional, bi directional suppose to used spe seat design, so on this case if PB > PA it shall relieve the cavity pressure, note "bi" on bidirectional means if cavity pressure bigger than upstream pressure it can move both ways, in the same direction with upstream or opposite (depend on which side you put the spe seat)
very useful Thanks
I see the advantage of the DBI-2, is there any disadvantaged???
You da man.
THX for share， very useful.
valve need do maintenance or free maintenance?
Thank you for your explanation
i have question about type DIB (BID Direction ) , from where will cavity pressure will come if both seats is very sealed?
Safety relief valve as explained by him.
I know there is the thermal impact from hot medium application. In fact no seat is super tight it means after a time medium gets into the cavity room.
I assume the valve the cavity room is atm pressure and when I have a high design pressure, the thermal impact (sun solar) is not an issue, when we are NOT in a hot medium application. (for eg.: natural gas temp range +5 - 40°C )
My question is, when the risk of cavity pressure is quite low, is the DIB-1 the best prefferd solution???
Thank you for clear explanation, its mean the DBB valve will never have DPE is it correct?
yes, it's.
Other than API 6D what is the other documents in which wall description with figures are shown of { SPE & DPE } i need that document can anyone help pls???
Sir ur nmber
Very good explanation but not sure what you are saying with 'made a by'?
Thank you, but may I know why dont we just have only DIB-2 instead of other?
junkiing93 possibly the cost
What is source of this notes?
Sir please share the pdf copy of presentation.
Ws lo que necesito pero me gustaria mas en español
Appove that explanation as a mechanical engineer.