Recent content by sathish66633

hello all, i have come across a calculation for CRN registration of divertor valve for non-lethal service (1" ASME 300#). As per the calculations the valve uses B31.1 code for wall thickness and bolt sizing. Isnt it ASME B16.34 is the correct code of construction for valves. is the above method...

hello all, i have come across a calculation for CRN registration of divertor valve for non-lethal service (1" ASME 300#). As per the calculations the valve uses B31.1 code for wall thickness and bolt sizing. Isnt it ASME B16.34 is the correct code of construction for valves. is the above method...

hello all, at present i am involved in a design of control valves for continuous blow down steam service. In general, what are the limiting operating conditions that needs for mutistage trims. and the method to find the no of stages required for the service. thanks in advance. Regards, sathish

hello all, I have been associated with development of new series of ball valves for high temperature service. where i am facing the problem of using Soft-Sealing due to service condition. can anyone suggest me the possibility of using TiTanium/ Aluminium seal rings opposed to metal seal option...

Hi boa2ye, i ve done quite few no. of MAST calculations. as per my knowledge i ve been using the allowable stress @ the design temp.(which would be roughly 65% SMYS as per API std.)you can even take up the values from ASME BVP. Again, the C/S of the stem plays a major role (If it is not...

hello frank, Thanks for your reply. could you kindly tell me the ASME/ ISO standard that refers for the tolerance of spherical surface dimensions.

Hello all, I have been assigned to prepare documentation for a series of ball valves. i found that the Sphericity tolerance of ball is limited to 0.02mm. The valve has ISO 2768 as general tolerancing, but i couldn't find any (min- max) limits for "profile tolerance of surfaces"(as in ISO 1101)...

Hello all, Can you please tell me where i could find 0.2% proof stress values of A216 WCB as a function of temperature.. also, the kind of materials for which 0.1% proof strength to be accounted in strength calculations. Thanks in advance. regards, sathish.

We are choosing material for a valve for our customer handling liquid sulphur in his plant. Please advise whether normal 316L is sufficient for the same. Is NACE requirement mandatory for liquid sulphur? This is a new requirement for us and we just want to make sure that 316L (1.4404) would not...