WALL THICKNESS FOR BALL VALVE
WALL THICKNESS FOR BALL VALVE
(OP)
HI,
i NEED YOUR HELP IN ORDER TO KNOW THE WALL THICKNESS FOR A BALL VALVE, I ALREADY BOUGHT SOME VALVES AND THE SUPPLIER MADE THE ULTRASONIC TEST REPORTS BUT I HAVE SOME DOUBT ABOUT IT, AND I NEED TO KNOW HOW CANI KNOW THE WALL THICKNESS FOR THE SIZE AND RAITING OF A VALVE.
REGARDS.
i NEED YOUR HELP IN ORDER TO KNOW THE WALL THICKNESS FOR A BALL VALVE, I ALREADY BOUGHT SOME VALVES AND THE SUPPLIER MADE THE ULTRASONIC TEST REPORTS BUT I HAVE SOME DOUBT ABOUT IT, AND I NEED TO KNOW HOW CANI KNOW THE WALL THICKNESS FOR THE SIZE AND RAITING OF A VALVE.
REGARDS.





RE: WALL THICKNESS FOR BALL VALVE
RE: WALL THICKNESS FOR BALL VALVE
RE: WALL THICKNESS FOR BALL VALVE
You should specify the minimum inside diameter required and that it should be a full bore valve to your specified .D.
http://virtualpipeline.spaces.msn.com
RE: WALL THICKNESS FOR BALL VALVE
Have you inquired of the manufacturer as to their methodology for determining minimum wall? For instance, codes, pressure and temperature, or factor of safety.
Paul Ostand
www.ostand.com
RE: WALL THICKNESS FOR BALL VALVE
THE BRAND OF THE VALVES IS SCV SOUTHERN CALIFORNIA VALVES.
I DON'T KNOW HOW TO PUSH HIM TO DO IT.
I HAVE REQUESTED THE WALL THICKNESS TO MY SUPPLIER BECUASE ANOTHER COMPANY MADE THE ULTRASONIC TEST FOR THE WELDING OF THE VALVES, I WANT TO VERIFY IF THE RESULTS OF THE ULTRASONIC COMPANY MATCHES THE MEASURES OF MY SUPPLIER
RE: WALL THICKNESS FOR BALL VALVE
Just withhold 10% of the payment until they cough up the appropriate documents. Until then believe your testing company.
http://virtualpipeline.spaces.msn.com
RE: WALL THICKNESS FOR BALL VALVE
You might go at it this way. Share your findings with them, and request a statement that these findings are within their design parameters.
Learn from this on how to specify on future orders.
Paul Ostand
www.ostand.com
RE: WALL THICKNESS FOR BALL VALVE
Patricia Lougheed
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RE: WALL THICKNESS FOR BALL VALVE
ANSI B16.34 is a good guide to ensuring the wall thickness of the pressure vessel (in your case a ball valve).
What is the valve size you have bought, the material of construction (i.e. CF8M, LCC, 316, LF2 etc) and the pressure rating.
ANSI B16.34 table 3 allows you to calculate the min wall thickness of a vessel but again you must account for other factors, e.g. Corrosion allowances, service conditions and process.
Volumetric NDE (UT) is a good method of checking the wall thickness and so is RT (Radiography).
As a high pressure valve manufacturer (www.valves.co.uk), we would have no objections to this information as product must be designed and manufactured to code. A valve manufacturer should be able to provide wall thickness evidence, unless it is coming from a stockist and therefore does not have this information.
Hope this helps