Max size of Top Entry Ball valve 900#
Max size of Top Entry Ball valve 900#
(OP)
Dear friends
What is the Max. size of Top Entry Ball valve 900#,which can normally manufacturing by valve factories.
We have a client who request 36" Top Entry ball valve(900#) as Actuated valve.
As I checked with reputable factories ,they can offer max 16" for such a rating
Thank you in advance!
What is the Max. size of Top Entry Ball valve 900#,which can normally manufacturing by valve factories.
We have a client who request 36" Top Entry ball valve(900#) as Actuated valve.
As I checked with reputable factories ,they can offer max 16" for such a rating
Thank you in advance!
RE: Max size of Top Entry Ball valve 900#
RE: Max size of Top Entry Ball valve 900#
Thank you for your reply.
I am asking the question because of Engineering Design perspective( commercial availability / cost / Necessity of usage) .
RE: Max size of Top Entry Ball valve 900#
RE: Max size of Top Entry Ball valve 900#
This is why that they chosen Top Entry type
Concerning butterfly valve, am not sure about Custom Design Process.
RE: Max size of Top Entry Ball valve 900#
What sort of industry is this valve for? Upstream or downstream oil and gas, pipeline, mining, etc.?
Aside from manufacturing/workshop constraint, metal seated ball valve is so complex, it might scare even the well known manufacturer to reply back to you. Or provide you with price overestimation.
Seems like your client performed mainly desktop review prior deciding they will go for 36” ball valve, butt welded top entry. Criteria such as maintainable, full bore (PIGable), quarter turn (faster opening/closing) by text book will lead mainly to ball valve. While in practice this is not entirely true.
Our engineering contractor (EC) also did similar things for our 12”-20” pipeline, end up with late delivery, metal seated excessive leak rate, and there was no clear guideline for maintenance. If I were you, I would challenge whether this is necessity. Butterfly valve or flanged trunnion mounted pipeline ball valve (not top entry) as bcd suggested would be better option wrt reliability.
Proper maintenance is better if valve can be blocked (by for instance by two gate valves before and after), removed from line for proper workshop repair, install spare valve for the next xyz years. Lifting ball only (for maintenance as your end user suggested) would require at least same effort or even bigger shall compared to lifting the whole valve.
Clarify acceptance criteria to the manufacturer prior your inquiry. PR2 requirement will spook most of them. Or is this just API6D or API598
MOGAS and Cameron have years of experience in metal seated ball valve. brochure below indicates that they can make 36”-900# ball valve.
https://www.mogas.com/en-us/resources/media-centre...)
Not really sure who supplied ball valves for South Stream transport.
PS: Unless there is a fundamental requirement of using biggest size top entry butt welded metal seated ball valve, I personally would avoid this.
Good luck
Regards
RE: Max size of Top Entry Ball valve 900#
Fist of all thank you so much for sharing such a information :
In this regard,We have also another Issues as below :
1)The estimated break torque for this 36" 900# ball valve is 91000N.M
2)The estimated weight is about 21 tons
3)Actuator type selection
4)Test bench facilities for testing
5)Design a Die Casting Mold(costly)
6)Seat Design
7)Factories previous experience
RE: Max size of Top Entry Ball valve 900#
Valve manufacturers have all consolidated over the years so what seems like dozens of suppliers are often only one or two large companies.
Have you done any real research into suppliers?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Max size of Top Entry Ball valve 900#
Thank you your reply.
I have already searched,and got offer from 148.000$/230,000$ cast quality to 480,000$ forge quality,(not first class factories!)
But non of them have previous experience in design & manufacturing.
Just say custom Design.!
RE: Max size of Top Entry Ball valve 900#
RE: Max size of Top Entry Ball valve 900#
I agree with mk3223.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.